Claims:

1. A circuit breaker comprising a moving terminal (9), said moving terminal comprising:
an assembly (4) of a first component and a second component that are coupled to each other, wherein: the assembly (4) comprises a first side surface (13) that is mounted on a housing of the circuit breaker and has a thickness that is at least twice of that of the first component or of the second component; and
wherein the assembly (4) comprises a second side surface (12) projecting outside the housing of the circuit breaker and having approximately same thickness as that of the first component or the second component.

2. The circuit breaker as claimed in claim 1, wherein the assembly (4) comprises a bent (11) to form the second side surface (12) at certain angle with the first side surface (13) mounted on the housing surface.

3. The circuit breaker as claimed in claim 1, wherein the first side surface (13) of the assembly (4) comprises a full thickness which when bent to form the second side surface (12) projecting outside housing the full thickness is reduced to half of the full thickness.

4. The circuit breaker as claimed in claim 1, wherein the first side surface (13) comprises a flat bottom surface mounted on the housing.

5. The circuit breaker as claimed in claim 1, wherein the second side surface (12) comprises an L-shaped terminating surface projecting outside housing of breaker.

6. The circuit breaker as claimed in claim 1, wherein the assembly comprises substantially an L-shaped profile.

7. The circuit breaker as claimed in claim 1, wherein the second side surface (12) projecting outside the housing of the circuit breaker provides a higher cross sectional area.
8. The circuit breaker as claimed in claim 1, wherein the first component and the second component are mounted one above the other to form the assembly (4), and wherein the first side surface (13) of the assembly (4) comprises a full thickness whereas the second side surface (12) of the assembly (4) comprises a half thickness as compared to the full thickness of the first side surface (13).

9. The circuit breaker as claimed in claim 1, wherein the first component and the second component are metallic components, preferably, manufactured using a sheet metal process.

10. The circuit breaker as claimed in claim 1, wherein the moving terminal (9) forms the assembly (4).

, Description:
TECHNICAL FIELD
[0001] The present disclosure relates to a circuit breaker, and particularly relates to, a construction of circuit breaker current paths for providing adequate cross section of power contacts of fixed and moving terminal assemblies to limit temperature rise. More particularly the present disclosure relates to an assembly that includes conductive terminals of variable thickness using sheet metal process for the switching device.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Electrical switching apparatus, such as circuit breakers, provide protection for electrical systems from electrical fault conditions such as, for example, current overloads, short circuits, abnormal voltage and other fault conditions. Typically, circuit breakers include an operating mechanism which opens electrical contact assemblies to interrupt the flow of current trough the conductors of an electrical system in response to such fault conditions. A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overcurrent, typically resulting from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.
[0004] Circuit breakers are generally installed to protect equipment from overcurrent (than its rated current) situations, for example, when a short circuit or ground fault occurs in an electrical supply conductor. Upon the occurrence of any such overcurrent condition, electrical contacts inside circuit breaker get opened, and stop supply of electrical current to equipment. Designs for circuit breakers generally include accommodations for both high quiescent currents and high withstand currents. To maintain a high withstand current rating, the contacts must be locked closed at the current withstand rating and be able to withstand the large electrodynamics repulsion forces generated by the current flow.
[0005] Main contact system of circuit breaker consists of a moving terminal and a fixed terminal. Mechanism is the part of circuit breaker used for driving power contact system of the circuit breaker to close and open. Energy stored in the mechanism by means of springs is utilized to join the moving terminal with the fixed terminal and thereby close the circuit. Under normal operating conditions i.e. in electrical current carrying state; circuit remains closed. Moving terminal assembly gets opened and moves away from fixed terminal when tripping command is received.
[0006] Efforts have been made in related art to address above stated problem by using a device or apparatus or system. An example of such device is recited in a United States Patent 8592709, entitled “Current path arrangement for a circuit breaker”. The patent discloses a circuit breaker system with an increased current carrying capability. The patent describes an apparatus includes an enclosure, a plurality of circuit breaker sub poles, each enclosed within a chamber of the enclosure, and a plurality of arc chutes, each installed on one of the chambers enclosing the circuit breaker sub poles.
[0007] However, existing design of moving terminal assembly includes metallic terminal. Metallic terminal is generally made up from complex or specialized manufacturing processes like hot forging or extrusion. Manufacturing cost of such terminals is generally high due to specialized manufacturing processes like hot forging or extrusion. To achieve variable thickness within a single part generally such manufacturing processes are adopted. Further, existing design of moving terminal assembly requires excess material consumption. Furthermore, in existing prior-art there is higher current path length which offers higher resistance.
[0008] Whereas there is certainly nothing wrong with existing design of moving terminal assembly or techniques, nonetheless, there still exists a need to provide an efficient, effective, reliable, improved design of moving terminal assembly which forms pole assembly. Further there is a need of circuit breaker current paths for providing adequate cross section of power contacts of fixed and moving terminal assemblies to limit temperature rise. Furthermore there is a need of simplified manufacturing process like sheet metal process for manufacturing moving terminal and still achieves variable thickness at different surfaces of moving terminal. In addition there is a need of a pole assembly that is simple in construction and has reduced number of components thereby reducing cost of assembly and exhibits less resistance to the current carrying path has improved performance and efficiency thereof.
[0009] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[00010] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about”. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[00011] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00012] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00013] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.

OBJECTS OF THE INVENTION
[00014] An object of the present disclosure is to provide a circuit breaker with a moving terminal.
[00015] Another object of the present disclosure is to provide circuit breaker current paths for providing adequate cross section of power contacts of fixed and moving terminal assemblies to limit temperature rise.
[00016] Another object of the present disclosure is to provide an assembly that includes conductive terminals of variable thickness using sheet metal process for the switching device.
[00017] Another object of the present disclosure is to provide a simplified manufacturing process like sheet metal process for manufacturing moving terminal and still achieve variable thickness at different surfaces of moving terminal.
[00018] Another object of the present disclosure is to provide a moving terminal assembly that offers lesser resistance path due to additional cross sectional area with lesser material.
[00019] Another object of the present disclosure is to provide a pole assembly that is simple in construction and has reduced number of components thereby reducing cost of assembly.
[00020] Another object of the present disclosure is to provide a pole assembly that exhibits less resistance to the current carrying path has improved performance and efficiency thereof.
[00021] Another object of the present disclosure is to provide an improved design of moving terminal assembly that reduces depth of switchgear for rated current as compared to other switchgears.
[00022] Another object of the present disclosure is to provide material consumption of conducting metal has been reduced keeping required cross-sectional area to conduct rated current.

SUMMARY
[00023] The present disclosure relates to a circuit breaker, and particularly relates to, a construction of circuit breaker current paths for providing adequate cross section of power contacts of fixed and moving terminal assemblies to limit temperature rise. More particularly the present disclosure relates to an assembly that includes conductive terminals of variable thickness using sheet metal process for the switching device.
[00024] Embodiments of the present disclosure provide an efficient, effective, reliable, improved design of moving terminal assembly which forms pole assembly. Further, circuit breaker current paths can provide adequate cross section of power contacts of fixed and moving terminal assemblies to limit temperature rise.
[00025] Accordingly, an aspect of the present disclosure relates to a circuit breaker. In an aspect, the circuit breaker can include a moving terminal. In another aspect, the moving terminal can include an assembly of a first component and a second component that can be coupled to each other. The assembly can include a first side surface that can be mounted on a housing of the circuit breaker and has a thickness that is at least twice of that of the first component or of the second component. The assembly can include a second side surface projecting outside the housing of the circuit breaker and having approximately same thickness as that of the first component or the second component.
[00026] In an aspect, the assembly can include a bent to form the second side surface at certain angle with the first side surface mounted on the housing surface.
[00027] In an aspect, the first side surface of the assembly can include a full thickness which when bent to form the second side surface projecting outside housing the full thickness can be reduced to half of the full thickness.
[00028] In an aspect, the first side surface can include a flat bottom surface mounted on the housing.
[00029] In an aspect, the second side surface can include an L-shaped terminating surface projecting outside housing of breaker.
[00030] In an aspect, the assembly can include substantially an L-shaped profile.
[00031] In an aspect, the second side surface projecting outside the housing of the circuit breaker to provide a higher cross sectional area.
[00032] In an aspect, the first component and the second component can be mounted one above the other to form the assembly. In another aspect, the first side surface of the assembly can include a full thickness whereas the second side surface of the assembly can include a half thickness as compared to the full thickness of the first side surface.
[00033] In an aspect, the first component and the second component are metallic components and preferably can be manufactured using a sheet metal process.
[00034] In an aspect, the moving terminal can form the assembly.
[00035] In contrast to the conventional design of moving terminal assembly, the present disclosure provides a construction of moving terminal assembly with two metallic components fixed to each other that gives double thickness on assembled level (as compared to thickness of individual component) at flat bottom surface mounted on housing; and provides same thickness as that of individual component on L shaped terminating surface projecting outside housing of breaker. Also, in contrast to the existing solution, the proposed solutions according to the present disclosure provides a simplified manufacturing process used for moving terminal assembly and its conventional joining or fixing method that facilitates optimum material usage with reduced cost. Further, in contrast to the existing moving terminal assembly, a pole assembly that is simple in construction and has reduced number of components thereby reducing cost of assembly so reduces in process or conversion cost. Furthermore, in contrast to the existing moving terminal assembly, the present invention provides a pole assembly that exhibits less resistance to the current carrying path has improved performance and efficiency thereof.
[00036] Further, in contrast to the existing moving contact assembly, the present invention provides moving contact assembly that is achieved using simplified manufacturing processes to limit conversion cost of components. Furthermore, present invention can use simplified manufacturing process like sheet metal process for manufacturing moving terminal and still archives variable thickness at different surfaces of moving terminal.
[00037] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE DRAWINGS
[00038] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure, and wherein:
[00039] FIG. 1 illustrates proposed two conductive terminals forming an assembly, in accordance with an exemplary embodiment of the present disclosure.
[00040] FIG. 2 illustrates a rear view of proposed two metallic plates having L shaped profiles which project outside breaker housing (not shown) form rectangular surface, in accordance with an exemplary embodiment of the present disclosure.
[00041] FIG. 3 illustrates a front isometric view of two metallic plates joined together by fixing means, in accordance with an exemplary embodiment of the present disclosure.
[00042] FIG. 4 illustrates the propose moving contact assembly of moving terminal, plurality of braids connected to moving terminal at one end and metallic blades at another end, in accordance with an exemplary embodiment of the present disclosure.
[00043] FIG. 5 illustrates a sectional isometric view of moving terminal assembly made up of moving contact assembly (of FIG. 4) mounted inside housing (not shown) of switchgear, in accordance with an exemplary embodiment of the present disclosure.
[00044] FIG. 6 illustrates a sectional side view of proposed moving terminal assembly and fixed contact assembly, in accordance with an exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION
[00045] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[00046] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[00047] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00048] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. These exemplary embodiments are provided only for illustrative purposes and so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
[00049] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[00050] All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00051] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[00052] The present disclosure relates to a circuit breaker, and more specifically relates to, circuit breaker current paths for providing adequate cross section of power contacts of fixed and moving terminal assemblies to limit temperature rise. More particularly the present disclosure relates to an assembly that includes conductive terminals of variable thickness using sheet metal process for the switching device.
[00053] Embodiments of the present disclosure provide an efficient, effective, reliable, improved design of moving terminal assembly which forms pole assembly. Further, circuit breaker current paths can provide adequate cross section of power contacts of fixed and moving terminal assemblies to limit temperature rise.
[00054] Accordingly, an aspect of the present disclosure relates to a circuit breaker. In an aspect, the circuit breaker can include a moving terminal. In another aspect, the moving terminal can include an assembly of a first component and a second component that can be coupled to each other. The assembly can include a first side surface that can be mounted on a housing of the circuit breaker and has a thickness that is at least twice of that of the first component or of the second component. The assembly can include a second side surface projecting outside the housing of the circuit breaker and having approximately same thickness as that of the first component or the second component.
[00055] In an aspect, the assembly can include a bent to form the second side surface at certain angle with the first side surface mounted on the housing surface.
[00056] In an aspect, the first side surface of the assembly can include a full thickness which when bent to form the second side surface projecting outside housing the full thickness can be reduced to half of the full thickness.
[00057] In an aspect, the first side surface can include a flat bottom surface mounted on the housing.
[00058] In an aspect, the second side surface can include an L-shaped terminating surface projecting outside housing of breaker.
[00059] In an aspect, the assembly can include substantially an L-shaped profile.
[00060] In an aspect, the second side surface projecting outside the housing of the circuit breaker to provide a higher cross sectional area.
[00061] In an aspect, the first component and the second component can be mounted one above the other to form the assembly. In another aspect, the first side surface of the assembly can include a full thickness whereas the second side surface of the assembly can include a half thickness as compared to the full thickness of the first side surface.
[00062] In an aspect, the first component and the second component are metallic components and preferably can be manufactured using a sheet metal process.
[00063] In an aspect, the moving terminal can form the assembly.
[00064] In contrast to the conventional design of moving terminal assembly, the present disclosure provides a construction of moving terminal assembly with two metallic components fixed to each other that gives double thickness on assembled level (as compared to thickness of individual component) at flat bottom surface mounted on housing; and provides same thickness as that of individual component on L shaped terminating surface projecting outside housing of breaker. Also, in contrast to the existing solution, the proposed solutions according to the present disclosure provides simplified manufacturing process used for moving terminal assembly and its conventional joining or fixing method that facilitates optimum material usage with reduced cost. Further, in contrast to the existing moving terminal assembly, a pole assembly that is simple in construction and has reduced number of components thereby reducing cost of assembly so reduces in process or conversion cost. Furthermore, in contrast to the existing moving terminal assembly, the present invention provides a pole assembly that exhibits less resistance to the current carrying path has improved performance and efficiency thereof.
[00065] Further, in contrast to the existing moving contact assembly, the present invention provides moving contact assembly that is achieved using simplified manufacturing processes to limit conversion cost of components. Furthermore, present invention can use simplified manufacturing process like sheet metal process for manufacturing moving terminal and still archives variable thickness at different surfaces of moving terminal.
[00066] The present invention was made to solve the above-discussed problem and has an object of suppressing rise in temperature at the current-carrying part in the air circuit breaker by effectively radiating a heat generated in the air circuit breaker.
[00067] FIG. 1 illustrates two conductive terminals 4 of proposed invention, in accordance with an exemplary embodiment of the present disclosure. In an embodiment, two metallic terminals 4 can be made using simplified process and are joined together by fixing means 10. In an exemplary embodiment, fixing means 10 can be rivet, screw, brazing process or any other metal joining process. One component is placed on another to form assembly joined by conventional fixing means. In another exemplary embodiment, two metallic terminal can be are riveted together using current carrying rivets 10 of suitable material. When these two conducting components 4 are held together using connecting rivets 10, flat bottom surface thickness 13 of “2d” unit and L shaped profile’s 11 thickness of “d” unit is achieved with overall same width of “x” unit.
[00068] FIG. 2 illustrates a rear view of two metallic plates 4 of proposed invention, in accordance with an exemplary embodiment of the present disclosure. In an embodiment, two metallic plates having L shaped profiles which project outside breaker housing (not shown) form rectangular surface. Bottom plates 13 constitute double thickness as that of L shaped terminating surface 11 and 12.
[00069] FIG. 3 illustrates a front isometric view of two metallic plates of proposed invention, in accordance with an exemplary embodiment of the present disclosure. FIG. 3 illustrates front isometric view of two metallic plates 4. In an embodiment, two metallic plates 4 can be joined together by fixing means. FIG. 4 shows assembled width of terminal assembly is throughout same though L shapes of independent components have half widths as that of their respective bottom surfaces.
[00070] FIG. 4 illustrates a sectional isometric view of the proposed moving contact assembly 2, in accordance with an exemplary embodiment of the present disclosure. In an embodiment, the moving contact assembly 2 of moving terminal 9 and plurality of braids 5 can be connected to moving terminal 9 at one end and metallic blades 6 at another end. Plurality of power contact tips 7 can be fixed to blades 6 as shown. Entire assembly can be referred as moving contact assembly 2 which further constitutes as moving terminal assembly 3.
[00071] In an embodiment, moving terminal assembly 3 can be made up of moving contact assembly 2 (of FIG. 4) mounted inside housing (not shown) of switchgear. Moving contact assembly 2 can connect with fixed terminal 8 in closed position under normal operating conditions. For sake of explanation view shows open condition of pole assembly.
[00072] FIG. 5 illustrates a sectional isometric view of moving terminal assembly (3) made up of moving contact assembly (2) (of FIG. 4) mounted inside housing (not shown) of switchgear, in accordance with an exemplary embodiment of the present disclosure. In an embodiment, the moving terminal assembly 3 can be made up of moving contact assembly 2 (of figure 4) mounted inside housing (not shown) of switchgear. Moving contact assembly 2 can connect with fixed terminal 8 in closed position under normal operating conditions. For sake of explanation view shows open condition of pole assembly.
[00073] FIG. 6 illustrates a sectional side view of proposed moving terminal assembly 3 and fixed contact assembly 1, in accordance with an exemplary embodiment of the present disclosure. It also shows rotating point against which moving terminal rotates.
[00074] In an embodiment, construction of moving terminal assembly with two metallic components can be fixed to each other that gives double thickness on assembled level (as compared to thickness of individual component) at flat bottom surface mounted on housing; and provides same thickness as that of individual component on L shaped terminating surface projecting outside housing of breaker. Simplified manufacturing process can be used for moving terminal assembly and its conventional joining or fixing method that facilitates optimum material usage with reduced cost. The moving terminal assembly and individual components with full width on mounting surface and having half width that of base surface at L shaped terminating profile. Joining method of these two components such that at assembled level width of bottom flat surface is same as total width of L shaped profile including both individual components. The moving terminal assembly and its fixation with flexible plurality of wire strand bundles and their connection to metallic blades at another end. Profile of assembly projecting outside housing can facilitate higher cross sectional area than previous design with optimum material content and simplified manufacturing process. Design of moving terminal assembly can reduce depth of switchgear for rated current as compared to other switchgears.
[00075] In an embodiment, the moving terminal which is an assembly that can include two components which are mounted one above the other. Mounting surface of each component has full width (13) whereas their corresponding vertical L shaped surfaces (11 and 12) have half width as against full width of mounting surfaces with full widths. On assembling both the components together, thickness at mounting surface (13) is twice the thickness of individual component. On the other hand, L shaped surfaces of individual components with half width when assembled together form same width as compared to mounting surfaces. This facilitates optimum material utilization and reduced length of current path offers lesser resistance. Manufacturing process of making two metallic components to form moving terminal is simplified process like sheet metal process and aids low manufacturing cost.
[00076] In an embodiment, circuit breaker can include a fixed contact assembly 1 and a movable contact assembly 2 that pivots about a rotation point. The disclosed invention can include moving terminal assembly 3 generally made up of metallic conducting sheets 4, plurality of flexible metallic wire strands (braids) 5, current carrying blades 6 and contact tips or buttons 7 attached to blades. Entire assembly can be termed as moving terminal assembly 3 which further forms pole assembly.
[00077] In an embodiment, an electrical switching apparatus can include a fixed terminal 8 and a moving terminal 9) for each electrical phase. Generally one power contact construction remains fixed and another moving. Moving terminal 9 when connected to fix terminal 8 completes the circuit. Disclosed invention relates to moving terminal assembly 3.
[00078] In an embodiment, the moving terminal 9 can be an assembly consisting of two conductive terminals 4 made out of conductive material sheets through simplified process. These two components have L shaped bent 11 to form terminating rectangular surface 12 at certain angle with bottom flat surface 13 mounted on housing surface. Base flat surface 13 of each component has full width which when bent to form L shaped terminating surface projecting outside housing gets reduced half of the total base width. If bottom surface of each component has width equal to “x” unit; Width of terminating surface of each component is “x/2”. In the disclosed art, one component is placed on another component’s long flat bottom surface. Thus bottom flat portion of assembly is made up of flat surfaces of two components. Among the two components, component placed at lower level w.r.t. to another at bottom surface, has half width L shape bent 11. Component placed at upper level w.r.t. another, forms L shaped bent 11 with half width. Two half width L bents form total width equal to “x” unit same as bottom surface 13 width of individual components when they are joined at bottom flat surfaces (one above the other) 13. L shapes 11 of individual components are not full width but they are cut in half widths in such a way that when joined together they form a complete full width. On assembly, portion of removed material from one component’s L bent 11 is occupied by half width of material of another component and vice versa. If “d” unit is sheet thickness of each component; total assembly thickness becomes “2d” unit when two components are fixed together at bottom long surface 13. When connected together at bottom long flat surfaces, L shaped projections 11 of both components with x/2 width facilitate to form complete “x” unit width at assembled level. Thickness of each L shape 11 is “d” unit which is same as sheet thickness of a conducting component. When two components are assembled together, at assembled level; thickness of L shaped 11 terminating surfaces remains “d” unit. Thus variable thickness is achieved; at bottom flat surface 13 thickness is “2d” unit whereas L shaped flat surface 11 projecting outside housing has thickness equal to ”d” unit. This moving terminal assembly 3 by virtue of its construction; facilitates optimum material consumption and higher cross section than previously existing designs. This in turn offers lesser resistance path due to additional cross sectional area with lesser material. Simplified manufacturing processes of components give substantial reduction in manufacturing cost. Two conductive components 4 are fixed together by any fixing means such as rivet, bolts, brazing. For instance in the disclosed invention, they are riveted together using current carrying rivets 10 of suitable material. When these two conducting components 4 are held together using connecting rivets 10, flat bottom surface thickness 13 of “2d” unit and L shaped profile’s 11 thickness of “d” unit is achieved with overall same width of “x” unit. Flat end of terminal assembly is designed such that moving flexible current carrying wire strands (braids) 5 are attached to it. Wire strands present in plurality of bundles are fixed with terminal assembly’s flat base and are connected to current carrying blade 6 at another end. When moving terminal assembly 3 is closed by energy stored in mechanism (not shown), current gets conducted through fixed terminal 8)then through fixed contact strip 7 connected to fixed terminal 8 further through contact tip (button) 7 attached to blades 6 followed by braids 5 and then through bottom positioned moving terminal assembly 3. Switching device carries current up to rated electrical current under normal operating conditions for which current path is designed for; subjects to production of thermal heat while in operation. Heat is generated due to inherent losses. Adequate cross section depending upon the current carrying metallic properties of terminals can limit the temperature rise in circuit breakers.
[00079] Here, the pole assembly of the invention has less number of components. Rather the components are integrated to serve different functionality of support, positioning, connecting the fixed or movable contacts of the vacuum interrupter correspondingly to its respective terminals. Accordingly, the resistance to the current carrying path is largely reduced and also the localized heat generated is reduced, thereby reducing the stress on the components. Through these, the pole assembly exhibits improved performance and efficiency and durability besides providing reliable operation.
[00080] Only certain features of the invention have been specifically illustrated and described herein, and many modifications and changes will occur to those skilled in the art. The invention is not restricted by the preferred embodiment described herein in the description. It is to be noted that the invention is explained by way of exemplary embodiment and is neither exhaustive nor limiting. Certain aspects of the invention that not been elaborated herein in the description are well understood by one skilled in the art. Also, the terms relating to singular form used herein in the description also include its plurality and vice versa, wherever applicable. Any relevant modification or variation, which is not described specifically in the specification are in fact to be construed of being well within the scope of the invention. The appended claims are intended to cover all such modifications and changes which fall within the spirit of the invention.
[00081] The foregoing description of the specific embodiments will so fully reveal the general nature of the invention that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation.
[00082] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc. The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the scope of the appended claims.
[00083] While embodiments of the present disclosure have been illustrated and described, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the scope of the disclosure, as described in the claims.
[00084] In the description of the present specification, reference to the term "one embodiment," "an embodiments", "an example", "an instance", or "some examples" and the description is meant in connection with the embodiment or example described The particular feature, structure, material, or characteristic included in the present invention, at least one embodiment or example. In the present specification, the term of the above schematic representation is not necessarily for the same embodiment or example. Furthermore, the particular features structures, materials, or characteristics described in any one or more embodiments or examples in proper manner. Moreover, those skilled in the art can be described in the specification of different embodiments or examples are joined and combinations thereof.
[00085] All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
[00086] Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
[00087] The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
[00088] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[00089] The present disclosure a circuit breaker with a moving terminal.
[00090] The present disclosure provides circuit breaker current paths for providing adequate cross section of power contacts of fixed and moving terminal assemblies to limit temperature rise.
[00091] The present disclosure provides an assembly that includes conductive terminals of variable thickness using sheet metal process for the switching device.
[00092] The present disclosure provides a simplified manufacturing process like sheet metal process for manufacturing moving terminal and still archives variable thickness at different surfaces of moving terminal.
[00093] The present disclosure provides a moving terminal assembly that offers lesser resistance path due to additional cross sectional area with lesser material.
[00094] The present disclosure provides a pole assembly that is simple in construction and has reduced number of components thereby reducing cost of assembly.
[00095] The present disclosure provides a pole assembly that exhibits less resistance to the current carrying path has improved performance and efficiency thereof.
[00096] The present disclosure provides variable thickness of conductive material facilitates optimum material cost.
[00097] The present disclosure provides an improved design of moving terminal assembly that reduces depth of switchgear for rated current as compared to other switchgears.
[00098] The present disclosure provides material consumption of conducting metal has been reduced keeping required cross-sectional area to conduct rated current.