[001] The present subject matter described herein, relates to a vehicle construction and more particularly, relates to purpose of lowering noise level within a vehicle passenger compartment.
BACKGROUND AND PRIOR ART:
[002] In passenger cars/vehicles, low frequency (30 Hz to 150 Hz) booming noise is a common problem. The reason for booming noise is structural panel resonances which cause the passenger cabin air cavity/volume to compress/decompress and cause pressure differences leading to booming noise. Booming noise is mostly generated in low speed high gear combination wherein the driver gives full throttle by completely pressing the accelerator pedal. The high engine vibrations in such a situation are transmitted to the body through the engine mounting paths. When frequency of this excitation matches the natural frequency of structural panels, panels come under resonance. This leads to compression/decompression of air cavity which leads to booming noise generation.
[003] In cases where the side door inner panel or outer panel resonance is responsible for the booming noise, conventional methods like increasing thickness of the panels, addition of mass blocks or dead weights on panels, are employed. However, such conventional methods increase weight of the vehicle, are cost inclusive, and also deteriorates fuel efficiency of the vehicle. Further, it has been evaluated using laboratory simulations that a low profile continuous structure extending between the inner and outer panels of side doors might help in resolving the issue of booming noise. However, it is usually not feasible to provide any component between inner panel and outer panel as the door's window glass passes in between those panels, and any such component may restrict the window glass operation.

[004] United States Patent publication US7401847B2 provides that a door includes an inner panel, an outer panel, a door beam fixed to the inner panel, hinges, and a door lock unit. The door beam is connected at one end to one end side face of the inner panel at a first location and at the other end thereof to the other end side face at a second location higher or lower than the first location along a substantial diagonal of the outer panel. A first vibration damping member intervenes between the door beam and the outer panel to have contact with the door beam and the outer panel. A second vibration damping member may be further arranged above or under the door beam inside the outer panel. A third vibration damping member including a patch member may be attached to an interior face of the outer panel.
[005] The US prior art provides a conventional solution wherein a damping mass is disposed on a door panel.
OBJECTS OF THE INVENTION:
[006] The principal objective of the present invention is to provide door brace for reducing booming noise in passenger compartment of automobiles.
[007] Another object of the present subject matter is to provide a simple, cost effective, and efficiently designed door brace that is distinct from all conventional designs.
SUMMARY OF THE INVENTION:
[008] The present invention relates to a door brace for reducing booming noise in passenger compartment of automobiles, the door brace being provided between an outer door panel and an inner door panel, the door brace includes an outer patch disposed on the outer door panel, the outer patch defining a vertical member secured to the outer door panel, and a horizontal member angularly extending from the vertical member towards the inner door panel up to a first edge; an inner patch disposed on the inner door panel, the inner patch defining a vertical part secured to the inner door panel, and a horizontal part angularly extending from the vertical part towards the outer door panel up to a second edge; and a central patch

resiliency secured to the first edge and the second edge such that the outer patch, the inner patch, and the central patch define a uniform structure, wherein the central patch is configured to move relative to the outer patch and the inner patch in presence or gradual application of a force, and the central patch is configured to retract back to its initial position in absence or gradual removal of the force.
[009] In order to further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. 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 figures to reference like features and components. Some embodiments of system or methods in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0011] Figs, la and lb illustrate different views of a door assembly of an automobile in accordance with an embodiment of the present disclosure;
[0012] Figs. 2a and 2b illustrate different views of a door brace in accordance with an embodiment of the present disclosure;
[0013] Figs. 3a and 3b illustrate operational characteristics of the door brace in accordance with an embodiment of the present disclosure;
[0014] Figs. 4a and 4b illustrate practical application of the door brace; and

[0015] Fig. 5 illustrates simulation results providing a comparison between door assemblies with and without the door brace.
[0016] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
[0017] The present disclosure presents embodiments for a door brace for reducing booming noise in passenger compartment of automobiles, the door brace being provided between an outer door panel and an inner door panel, the door brace includes an outer patch disposed on the outer door panel, the outer patch defining a vertical member secured to the outer door panel, and a horizontal member angularly extending from the vertical member towards the inner door panel up to a first edge; an inner patch disposed on the inner door panel, the inner patch defining a vertical part secured to the inner door panel, and a horizontal part angularly extending from the vertical part towards the outer door panel up to a second edge; and a central patch resiliency secured to the first edge and the second edge such that the outer patch, the inner patch, and the central patch define a uniform structure, wherein the central patch is configured to move relative to the outer patch and the inner patch in presence or gradual application of a force, and the central patch is configured to retract back to its initial position in absence or gradual removal of the force.
[0018] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject

matter and are included within its spirit and scope. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art, and are to be 5 construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying 10 figures.
[0019] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise 15 various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
[0020] Figs. 1a and 1b illustrate different views of a door assembly 100 of an automobile (not shown) in accordance with an embodiment of the present disclosure. The door assembly 100 includes an outer door panel 102 and an inner
20 door panel 104. In an embodiment, the door assembly 100 is provided with a door brace 106. The door brace 106 is provided between the outer door panel 102 and the inner door panel 104. In an embodiment, the door brace 106, as provided between the outer door panel 102 and the inner door panel 104, is configured to decouple resonance frequencies associated with the outer door panel 102 and the
25 inner door panel 104, and thereby reducing booming noise generated within a passenger compartment of the automobile.
[0021] Figs. 2a and 2b illustrate different views of the door brace 106 in
accordance with an embodiment of the present disclosure. The door brace 106
includes an outer patch 108 configured to be disposed on the outer door panel 102.
30 The outer patch 108 defines a vertical member 110 secured to the outer door panel
6

102, and a horizontal member 112 angularly extending from the vertical member 110 towards the inner door panel 104 up to a first edge 114. In an example, the vertical member 110 is substantially orthogonal to the horizontal member 112.
[0022] The door brace 106 further includes an inner patch 116 configured to be 5 disposed on the inner door panel 104, the inner patch 116 defining a vertical part 118 secured to the inner door panel 104, and a horizontal part 120 angularly extending from the vertical part 118 towards the outer door panel 102 up to a second edge 122. In an example, the vertical part 118 is substantially orthogonal to the horizontal part 120.
10 [0023] In an embodiment, the door brace 106 further includes a central patch 124 resiliently secured to the first edge 114 and the second edge 122 such that the outer patch 108, the inner patch 116, and the central patch 124 define a uniform structure. In an example, the central patch 124 is secured to the first edge 114 and the second edge 122 by a plurality of springs 126. Alternatively, the central patch
15 124 may be coupled to the first edge 114 and the second edge 122 through any resilient of elastically deformable material similar to the plurality of springs 126 as known to a person skilled in the art. Further in an example, the outer patch 108, the inner patch 116, the central patch 124, and the plurality of springs 126 are made of steel or the like material.
20 [0024] Figs. 3a and 3b illustrate operational characteristics of the door brace 106 in accordance with an embodiment of the present disclosure. Fig. 3a illustrates an initial position 300 of the door brace 106, and Fig. 3b illustrates a final position 302 of the door brace 106. In an example, the central patch 124 of the door brace 106 is configured to achieve the final position 302 on moving relative to the outer
25 patch 108 and the inner patch 116 in presence or gradual application of a force, and the central patch 124 is configured to retract back to the initial position 300 in absence or gradual removal of the said force.
[0025] Figs. 4a and 4b illustrates practical application of the door brace 106 as
provided between the outer door panel 102 and the inner door panel 104 of the
30 door assembly 100. Further, the door brace 106 is provided in proximity to a
7

window glass regulator 402, the window glass regulator 402 is configured for opening and closing of a window glass (not shown) of the door assembly 100. In an embodiment, the window glass regulator 402 is in contact with the central patch 124 of the door brace 106.
5 [0026] In operation, when the window glass is completely closed, the window glass regulator 402 in contact with the central patch 124 of the door brace 106, does not exert any force on the central patch. Thereby, the central patch 124 maintains a position “A” corresponding to the initial position 300. Further, when the window glass is opened gradually, the window glass regulator 402 exerts a
10 force on the central patch 124. Thereby, the central patch 124 achieves a position “B” corresponding to the final position 302. Further, when the window glass is gradually closed, the force from the window regulator 402 gradually decreases on the central patch 124, and thus the central patch 124 retracts back to the position “A” corresponding to the initial position 300 from the position “B” corresponding
15 to the final position 302. Thus, the integrity of the door brace 106 is maintained without providing any resistance to the operation of the window glass by the window glass regulator 402. Further in an example, the central patch 124 is provided with a rubber coating to avoid noise generated due to friction between the window glass regulator 402 and the central patch 124.
20 [0027] Fig. 5 illustrates simulation results providing a comparison between door assemblies with and without the door brace 106. From the simulation results it is observed that, there is a reduction in booming noise levels, in the passenger compartment, by 2.5 dB(A) and 5.5 dB(A) at the problem frequencies around 40 Hz and 110 Hz, respectively. Further, based on operational deflection shape
25 analysis with door brace 106, it is observed that when the door brace 106 is added in between the inner door panel 104 and the outer door panel 102, the bending mode of the inner door panel 104 is restricted and its amplitude of vibration is reduced. This avoids the compression/decompression of air cavity in the passenger compartment, thereby reducing the booming noise at aforementioned
30 problem frequency range.
8

[0028] Although embodiments for the present subject matter have been described in language specific to structural features, it is to be understood that the present subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present subject matter. Numerous modifications and adaptations of the system/component of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the scope of the present subject matter.

Claims:We claim:

1.A door brace (106) for reducing booming noise in passenger compartment of automobiles, the door brace (106) being provided between an outer door panel (102) and an inner door panel (104), the door brace (106) comprising:
an outer patch (108) configured to be disposed on the outer door panel (102), the outer patch (108) defining a vertical member (110) secured to the outer door panel (102), and a horizontal member (112) angularly extending from the vertical member (110) towards the inner door panel (104) up to a first edge (114);
an inner patch (116) configured to be disposed on the inner door panel (104), the inner patch (116) defining a vertical part (118) secured to the inner door panel (104), and a horizontal part (120) angularly extending from the vertical part (118) towards the outer door panel (102) up to a second edge (122); and
a central patch (124) resiliently secured to the first edge (114) and the second edge (122) such that the outer patch (108), the inner patch (116), and the central patch (124) define a uniform structure,
wherein, the central patch (124) is configured to achieve a final position (302) on moving relative to the outer patch (108) and the inner patch (116) in presence or gradual application of a force, and the central patch (124) is configured to retract back to its initial position (300) in absence or gradual removal of the force.
2. The door brace (106) as claimed in claim 1, wherein the vertical member (110) is substantially orthogonal to the horizontal member (112).
3. The door brace (106) as claimed in claim 1, wherein the vertical part (118) is substantially orthogonal to the horizontal part (120).
4. The door brace (106) as claimed in claim 1, wherein the central patch (124) is secured to the first edge (114) and the second edge (122) by a plurality of springs (126).
5. The door brace (106) as claimed in claim 4, wherein the outer patch (108), the inner patch (116), the central patch (124), and the plurality of springs (126) are made of steel.
6. The door brace (106) as claimed in claim 1, wherein a window glass regulator (402) in contact with the central patch (124) is configured for the presence or gradual application of the force on the central patch (124) during an opening of a window glass.
7. The door brace (106) as claimed in claim 6, wherein the window glass regulator (402) in contact with the central patch (124) is configured for the absence or gradual removal of the force on the central patch (124) during a closing of the window glass.
8. The door brace (106) as claimed in claim 6 or 7, wherein the central patch (124) is provided with a rubber coating to avoid noise generated due to friction between the window glass regulator (402) and the central patch (124).
, Description:A DOOR BRACE FOR REDUCING BOOMING NOISE IN PASSENGER COMPARTMENT OF AUTOMOBILES
FIELD OF INVENTION:
[001] The present subject matter described herein, relates to a vehicle construction and more particularly, relates to purpose of lowering noise level within a vehicle passenger compartment.
BACKGROUND AND PRIOR ART:
[002] In passenger cars/vehicles, low frequency (30 Hz to 150 Hz) booming noise is a common problem. The reason for booming noise is structural panel resonances which cause the passenger cabin air cavity/volume to compress/decompress and cause pressure differences leading to booming noise. Booming noise is mostly generated in low speed high gear combination wherein the driver gives full throttle by completely pressing the accelerator pedal. The high engine vibrations in such a situation are transmitted to the body through the engine mounting paths. When frequency of this excitation matches the natural frequency of structural panels, panels come under resonance. This leads to compression/decompression of air cavity which leads to booming noise generation.
[003] In cases where the side door inner panel or outer panel resonance is responsible for the booming noise, conventional methods like increasing thickness of the panels, addition of mass blocks or dead weights on panels, are employed. However, such conventional methods increase weight of the vehicle, are cost inclusive, and also deteriorates fuel efficiency of the vehicle. Further, it has been evaluated using laboratory simulations that a low profile continuous structure extending between the inner and outer panels of side doors might help in resolving the issue of booming noise. However, it is usually not feasible to provide any component between inner panel and outer panel as the door’s window glass passes in between those panels, and any such component may restrict the window glass operation.
[004] United States Patent publication US7401847B2 provides that a door includes an inner panel, an outer panel, a door beam fixed to the inner panel, hinges, and a door lock unit. The door beam is connected at one end to one end side face of the inner panel at a first location and at the other end thereof to the other end side face at a second location higher or lower than the first location along a substantial diagonal of the outer panel. A first vibration damping member intervenes between the door beam and the outer panel to have contact with the door beam and the outer panel. A second vibration damping member may be further arranged above or under the door beam inside the outer panel. A third vibration damping member including a patch member may be attached to an interior face of the outer panel.
[005] The US prior art provides a conventional solution wherein a damping mass is disposed on a door panel.
OBJECTS OF THE INVENTION:
[006] The principal objective of the present invention is to provide door brace for reducing booming noise in passenger compartment of automobiles.
[007] Another object of the present subject matter is to provide a simple, cost effective, and efficiently designed door brace that is distinct from all conventional designs.
SUMMARY OF THE INVENTION:
[008] The present invention relates to a door brace for reducing booming noise in passenger compartment of automobiles, the door brace being provided between an outer door panel and an inner door panel, the door brace includes an outer patch disposed on the outer door panel, the outer patch defining a vertical member secured to the outer door panel, and a horizontal member angularly extending from the vertical member towards the inner door panel up to a first edge; an inner patch disposed on the inner door panel, the inner patch defining a vertical part secured to the inner door panel, and a horizontal part angularly extending from the vertical part towards the outer door panel up to a second edge; and a central patch resiliently secured to the first edge and the second edge such that the outer patch, the inner patch, and the central patch define a uniform structure, wherein the central patch is configured to move relative to the outer patch and the inner patch in presence or gradual application of a force, and the central patch is configured to retract back to its initial position in absence or gradual removal of the force.
[009] In order to further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter.

BRIEF DESCRIPTION OF THE DRAWINGS
[0010] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. 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 figures to reference like features and components. Some embodiments of system or methods in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0011] Figs. 1a and 1b illustrate different views of a door assembly of an automobile in accordance with an embodiment of the present disclosure;
[0012] Figs. 2a and 2b illustrate different views of a door brace in accordance with an embodiment of the present disclosure;
[0013] Figs. 3a and 3b illustrate operational characteristics of the door brace in accordance with an embodiment of the present disclosure;
[0014] Figs. 4a and 4b illustrate practical application of the door brace; and
[0015] Fig. 5 illustrates simulation results providing a comparison between door assemblies with and without the door brace.
[0016] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
[0017] The present disclosure presents embodiments for a door brace for reducing booming noise in passenger compartment of automobiles, the door brace being provided between an outer door panel and an inner door panel, the door brace includes an outer patch disposed on the outer door panel, the outer patch defining a vertical member secured to the outer door panel, and a horizontal member angularly extending from the vertical member towards the inner door panel up to a first edge; an inner patch disposed on the inner door panel, the inner patch defining a vertical part secured to the inner door panel, and a horizontal part angularly extending from the vertical part towards the outer door panel up to a second edge; and a central patch resiliently secured to the first edge and the second edge such that the outer patch, the inner patch, and the central patch define a uniform structure, wherein the central patch is configured to move relative to the outer patch and the inner patch in presence or gradual application of a force, and the central patch is configured to retract back to its initial position in absence or gradual removal of the force.
[0018] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject matter and are included within its spirit and scope. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures.
[0019] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
[0020] Figs. 1a and 1b illustrate different views of a door assembly 100 of an automobile (not shown) in accordance with an embodiment of the present disclosure. The door assembly 100 includes an outer door panel 102 and an inner door panel 104. In an embodiment, the door assembly 100 is provided with a door brace 106. The door brace 106 is provided between the outer door panel 102 and the inner door panel 104. In an embodiment, the door brace 106, as provided between the outer door panel 102 and the inner door panel 104, is configured to decouple resonance frequencies associated with the outer door panel 102 and the inner door panel 104, and thereby reducing booming noise generated within a passenger compartment of the automobile.
[0021] Figs. 2a and 2b illustrate different views of the door brace 106 in accordance with an embodiment of the present disclosure. The door brace 106 includes an outer patch 108 configured to be disposed on the outer door panel 102. The outer patch 108 defines a vertical member 110 secured to the outer door panel 102, and a horizontal member 112 angularly extending from the vertical member 110 towards the inner door panel 104 up to a first edge 114. In an example, the vertical member 110 is substantially orthogonal to the horizontal member 112.
[0022] The door brace 106 further includes an inner patch 116 configured to be disposed on the inner door panel 104, the inner patch 116 defining a vertical part 118 secured to the inner door panel 104, and a horizontal part 120 angularly extending from the vertical part 118 towards the outer door panel 102 up to a second edge 122. In an example, the vertical part 118 is substantially orthogonal to the horizontal part 120.
[0023] In an embodiment, the door brace 106 further includes a central patch 124 resiliently secured to the first edge 114 and the second edge 122 such that the outer patch 108, the inner patch 116, and the central patch 124 define a uniform structure. In an example, the central patch 124 is secured to the first edge 114 and the second edge 122 by a plurality of springs 126. Alternatively, the central patch 124 may be coupled to the first edge 114 and the second edge 122 through any resilient of elastically deformable material similar to the plurality of springs 126 as known to a person skilled in the art. Further in an example, the outer patch 108, the inner patch 116, the central patch 124, and the plurality of springs 126 are made of steel or the like material.
[0024] Figs. 3a and 3b illustrate operational characteristics of the door brace 106 in accordance with an embodiment of the present disclosure. Fig. 3a illustrates an initial position 300 of the door brace 106, and Fig. 3b illustrates a final position 302 of the door brace 106. In an example, the central patch 124 of the door brace 106 is configured to achieve the final position 302 on moving relative to the outer patch 108 and the inner patch 116 in presence or gradual application of a force, and the central patch 124 is configured to retract back to the initial position 300 in absence or gradual removal of the said force.
[0025] Figs. 4a and 4b illustrates practical application of the door brace 106 as provided between the outer door panel 102 and the inner door panel 104 of the door assembly 100. Further, the door brace 106 is provided in proximity to a window glass regulator 402, the window glass regulator 402 is configured for opening and closing of a window glass (not shown) of the door assembly 100. In an embodiment, the window glass regulator 402 is in contact with the central patch 124 of the door brace 106.
[0026] In operation, when the window glass is completely closed, the window glass regulator 402 in contact with the central patch 124 of the door brace 106, does not exert any force on the central patch. Thereby, the central patch 124 maintains a position “A” corresponding to the initial position 300. Further, when the window glass is opened gradually, the window glass regulator 402 exerts a force on the central patch 124. Thereby, the central patch 124 achieves a position “B” corresponding to the final position 302. Further, when the window glass is gradually closed, the force from the window regulator 402 gradually decreases on the central patch 124, and thus the central patch 124 retracts back to the position “A” corresponding to the initial position 300 from the position “B” corresponding to the final position 302. Thus, the integrity of the door brace 106 is maintained without providing any resistance to the operation of the window glass by the window glass regulator 402. Further in an example, the central patch 124 is provided with a rubber coating to avoid noise generated due to friction between the window glass regulator 402 and the central patch 124.
[0027] Fig. 5 illustrates simulation results providing a comparison between door assemblies with and without the door brace 106. From the simulation results it is observed that, there is a reduction in booming noise levels, in the passenger compartment, by 2.5 dB(A) and 5.5 dB(A) at the problem frequencies around 40 Hz and 110 Hz, respectively. Further, based on operational deflection shape analysis with door brace 106, it is observed that when the door brace 106 is added in between the inner door panel 104 and the outer door panel 102, the bending mode of the inner door panel 104 is restricted and its amplitude of vibration is reduced. This avoids the compression/decompression of air cavity in the passenger compartment, thereby reducing the booming noise at aforementioned problem frequency range.
[0028] Although embodiments for the present subject matter have been described in language specific to structural features, it is to be understood that the present subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present subject matter. Numerous modifications and adaptations of the system/component of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the scope of the present subject matter.