CLIAMS:1. An electrical switchgear mechanism comprising:
at least one first link (1) positively housed on at least one first slot of at least one close shaft (11);
at least one second link (2) positively housed on at least one second slot of at least one trip shaft (21);
at least one third link (3) connecting the at least one first link (1) and the at least one second link (2) using at least one joining member (31, 33); and
at least one stop button (6) mounted on the at least one third link (3).

2. The electrical switchgear mechanism according to claim 1, wherein the at least one first slot is located on at least one first side plate (4).

3. The electrical switchgear mechanism according to claim 1, wherein the at least one second slot is located on at least one second side plate (5).

4. The electrical switchgear mechanism according to claim 1, wherein the at least one third link (3) further comprising at least two slots (41, 42) with at least one rivet member (32, 34).

5. The electrical switchgear mechanism according to claim 1, wherein the at least one third link (3) further comprising a reset spring member (7) adapted to restore a position of the at least one third link (3).

6. The electrical switchgear mechanism according to claim 1, further comprising at least two latches (12, 22).

7. The electrical switchgear mechanism according to claim 1 work in an ON/OFF condition.

8. The electrical switchgear mechanism according to claim 1 work in a tripped condition.
,TagSPECI:TECHNICAL FIELD
The present subject matter described herein, in general relates to switchgears or circuit breakers, and more particularly, to an adjustable handle assembly to charge the breaker with variable transmission shaft dimensions.

BACKGROUND
Circuit breaker operating mechanism permits breaker to store the energy by compressing springs that are linked to the contact assembly of breaker by latching different links. Stored energy of springs and latching between the linkages allows breaker to make the contacts, hence completing the electrical circuit (closing of breaker) and break the contacts, hence interrupting the electrical circuit (tripping of breaker). Switchgear mechanisms use methods of latching for storing the spring energy and achieving its intended motion.

Most switchgear manufacturers provide two separate arrangements for making the breaker ON and OFF respectively and hence customer can either make the breaker ON or OFF at a time, depending upon the condition of breaker

In order to release the energy of springs when the breaker is in charged condition also known as ready to close condition, one has to make the breaker ON followed by tripping operation. But in case of draw-out type ACB, due to interlocking between the cradles and operating mechanism, closing operation may be defeated.

In such a case, there arises a need of single interface to defeat every other interlocking and release the stored energy of breaker.

SUMMARY
This summary is not intended to identify essential features of the subject matter nor is it intended for use in determining or limiting the scope of the subject matter.

In one implementation, the invention discloses a mechanism with integrated arrangement to make the breaker simultaneous close & trip using a single interface.

In one implementation, a single interface to provide every other interlocking and release the stored energy of breaker is provided.

In one implementation, the disclosed invention is a mechanism with integrated arrangement which can defeat all the racking interlocks in case of Draw-out type ACB.

In one implementation, the disclosed invention is a mechanism with integrated arrangement as mentioned in claim 1 and claim 2 such that it can be used as an Emergency OFF in case of faults which releases all the stored energy in the breaker

In one implementation, an electrical switchgear mechanism is disclosed. The electrical switchgear mechanism comprises of at least one first link (1) positively housed on at least one first slot of at least one close shaft (11) and at least one second link (2) positively housed on at least one second slot of at least one trip shaft (21). At least one third link (3) is provided for connecting the at least one first link (1) and the at least one second link (2) using at least one joining member (31, 33). The mechanism is further provided with at least one stop button (6) mounted on the at least one third link (3).

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer like features and components.

Figure 1 illustrates an ON condition of breaker is shown, in accordance with an embodiment of the present subject matter.

Figure 2 illustrates an OFF condition of breaker is shown, in accordance with an embodiment of the present subject matter.

Figure 3 illustrates an overview of latching arrangement is shown, in accordance with an embodiment of the present subject matter.

DETAILED DESCRIPTION
Preferred embodiments of the present disclosure will be described herein below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the present disclosure in unnecessary detail.

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise.

By the term “substantially” it is meant that the recited characteristic, parameter, or value need not be achieved exactly, but that deviations or variations, including for example, tolerances, measurement error, measurement accuracy limitations and other factors known to those of skill in the art, may occur in amounts that do not preclude the effect the characteristic was intended to provide.

Construction of the connector assembly of the present invention is explained with reference to the accompanying figures.

The components used in this invention are as given below:
1. Links (1,2,3)
2. Side plates (4,5)
3. Stop button (6)
4. Reset spring member (7)
5. close shaft (11)
6. latches (12, 22)
7. Joining members (31, 33)
8. Trip shaft (21)
9. Rivet member (32, 34)
10. Slots (41, 42)

In one implementation, an electrical switchgear mechanism is disclosed. The electrical switchgear mechanism comprises of at least one first link (1) positively housed on at least one first slot of at least one close shaft (11) and at least one second link (2) positively housed on at least one second slot of at least one trip shaft (21). At least one third link (3) is provided for connecting the at least one first link (1) and the at least one second link (2) using at least one joining member (31, 33). The mechanism is further provided with at least one stop button (6) mounted on the at least one third link (3).

In one implementation, the at least one first slot is located on at least one first side plate (4) and the at least one second slot is located on at least one second side plate (5).

In one implementation, the at least one third link (3) further comprises of at least two slots (41, 42) with at least one rivet member (32, 34). The at least one third link (3) further comprises of a reset spring member (7) adapted to restore a position of the at least one third link (3). The electrical switchgear mechanism further comprises of at least two latches (12, 22).

In one implementation, the electrical switchgear mechanism provides a way to combine both the closing as well as tripping circuits in one operation irrespective of the breaker condition. Breaker may be simultaneously turned ON and OFF in single command. All the breaker interlocking may be defeated and manually the breaker can be tripped.

In an exemplary embodiment of the present invention, the mechanism comprises of links (1) and (2) positively housed on the slots of close shaft (11) and trip shaft (21) respectively. Close shaft (11) and trip shaft (21) are pivoted in the mechanism side plates (4) and (5). The connecting link (3) joins both the link (1) and link (2) by joining members (31) and (33) respectively. Link (3) has two slots (41) and (42) which is rested on the side plate (4) by rivet members (32) and (34). The stop button (6) is mounted on the front face of link (3). A reset spring member (7) is interlinked between the link (3) and the side plate (4) to restore position of link (3). By pushing the stop button (6), both the close shaft (11) and the trip shaft (21) are operated simultaneously.

In one implementation, the proposed mechanism is capable of working when the breaker is taken to service condition in case of Draw-out type ACB, due to interlocking, closing and tripping commands are defeated. In this new arrangement, breaker can be made intentionally ON and OFF by a single interface thus defeating breaker conditions.

In one implementation, the proposed mechanism is capable of working when most of the switchgears are kept in ON and spring charged condition in use so that when the breaker is tripped, it should be ready to close in next operation. Thus to release all the energy from the mechanism, one has to trip the breaker followed by ON-OFF operation again. With this new arrangement breaker may be made OFF by single operation.

In one implementation, the proposed mechanism is capable of working in case of a draw-out type ACB, when the breaker is taken to service condition wherein the closing circuit is defeated by the interlocking between mechanism and cradle. In such case the main springs remains in charged condition (ready to close condition) and breaker cannot be made ON. The mechanism allows simultaneous closing and tripping operation of breaker by single interface in any condition of breaker by defeating all the interlocking in the breaker.

In one implementation, the invention comprises of links (1) and (2) positively housed on the slots of close shaft (11) and trip shaft (21) respectively. The connecting link (3) joins both the link (1) and link (2) and a stop button (6) is mounted on the front face of the link (3). The two discrete positions viz. ON condition of breaker with spring charged and OFF condition with spring discharged are shown in figure 1 and figure 2, respectively.

In one implementation, the proposed mechanism defines a way to combine both the closing as well as tripping circuits in one operation irrespective of the breaker condition. Breaker can be simultaneously made ON and OFF in single command. All the breaker interlocking will be defeated & manually breaker can be tripped.

Referring now to figure 1 illustrates an ON condition of breaker is shown, in accordance with an embodiment of the present subject matter.

In one embodiment of the present invention, figure 1 shows the ON condition of breaker and ready to close in next operation. When the springs are charged, latch (12) rests on close shaft (11). Links (1) and (2) are positively housed on the slots of close shaft (11) and trip shaft (21) respectively. Side plate (4) has two rivet members (32) and (34) at two different locations as shown in figure 1. The two slots (41) and (42) in link (3) are pivoted on rivet members (32) and (34) such that link (3) will have a single degree of motion in the slot axes in either direction. A click- fit member stop button (6) is mounted on the front face of link (3). The link (3) has a rivet member (34). A reset spring member (7) is mounted between the link (3) and the side plate (4).

When the stop button (6) is pushed, the link (3) travels in X1-Y1 direction of slots and pushes the links (1) and (2). The motion of the links (1) and (2), results in angular movement of the shafts (11) and (21). Due to angular movement of the close shaft (11), the latch (12) enters into the slot of shaft (11) and the closing circuit collapses. Due to the angular movement of the trip shaft (22), the latch (22) enters into the slot of the shaft (21) and the tripping circuit collapses, as shown in figure 2.

Referring now to figure 2 illustrates an OFF condition of breaker is shown, in accordance with an embodiment of the present subject matter.

Referring now to figure 3 illustrates an overview of latching arrangement is shown, in accordance with an embodiment of the present subject matter. In an embodiment of the present invention, the detailed description of figure 3 is as given above.

Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include those provided by the following features:

One feature of the invention is that, the proposed invention provides a spring discharged mechanism.

Another feature of the invention is that, the proposed invention is failsafe against any jamming of linkages

Yet another feature of the invention is that, a simultaneous closing and tripping of breaker defeating all the interlocks is possible using the proposed invention.

Still another feature of the invention is that, the mechanism can be used as an emergency stop to release the stored energy of springs in the system

Although implementations for an adjustable handle assembly to charge the breaker with variable transmission shaft dimensions have been described in language specific to structural features and/or the methods, it is to be understood that the appended claims are not necessarily limited to the specific features or methods described. Rather, the specific features are disclosed as examples of, an adjustable handle assembly to charge the breaker with variable transmission shaft dimensions.

It is intended that the disclosure and examples above be considered as exemplary only, with a true scope and spirit of disclosed embodiments being indicated by the following claims.