Interlock article
09991063 ยท 2018-06-05
Assignee
Inventors
Cpc classification
H01H2071/565
ELECTRICITY
International classification
Abstract
An interlock for a circuit breaker having a first circuit breaker switch and a second circuit breaker switch. The interlock includes a first actuator movably associated with the first circuit breaker switch, a first limiter plate and a first handle securely associated with the first actuator and the first limiter plate. The interlock further includes a second actuator movably associated with the second circuit breaker switch, a second limiter plate, and a second handle securely associated with the second actuator and the second limiter plate. The first limiter plate and second limiter plates are configurable between a first configuration and a second configuration. When the first plate is in the second configuration, the second plate is non-movably configured in the first configuration, and when the second plate is in the second configuration, the first plate is non-movably configured in the first configuration.
Claims
1. An interlock for a circuit breaker having a first circuit breaker switch and a second circuit breaker switch, the interlock comprising: an interlock housing; a first actuator movably associated with the first circuit breaker switch; a first limiter plate, and a first handle securely associated with the first actuator and first limiter plate, wherein the first handle is rotatably associated with the interlock housing to be configurable between a first handle first configuration and a first handle second configuration; a second actuator movably associated with the second circuit breaker switch; a second limiter plate, and a second handle securely associated with the second actuator and second limiter plate, wherein the second handle is rotatably associated with the interlock housing to be configurable between a second handle first configuration and a second handle second configuration, wherein, when the first handle is in the first handle first configuration, the second handle is configurable between the second handle first configuration and the second handle second configuration, and when the first handle is in the first handle second configuration, the second handle is configured in the second handle first configuration and prevented from being configured into the second handle second configuration by the first limiter plate and the second limiter plate is prevented from rotating by the first limiter plate, and when the second handle is in the second handle first configuration, the first handle is configurable between the first handle first configuration and the first handle second configuration, and when the second handle is in the second handle second configuration, the first handle is configured in the first handle first configuration and prevented from being configured into the first handle second configuration by the second limiter plate and the first limiter plate is prevented from rotating by the second limiter plate.
2. The interlock of claim 1, wherein the first actuator, first limiter plate and first handle are securely associated via a first handle shaft, and wherein the second actuator, second limiter plate and second handle are securely associated via a second handle shaft.
3. The interlock of claim 1, wherein the circuit breaker includes a circuit breaker housing and wherein the interlock housing is securely associated with the circuit breaker housing.
4. The interlock of claim 1, wherein the first actuator is rotatably configurable between a first actuator first configuration and a first actuator second configuration and wherein the second actuator is rotatably configurable between a second actuator first configuration and a second actuator second configuration.
5. The interlock of claim 1, wherein the first actuator is configurable between a first actuator first configuration and a first actuator second configuration, wherein when the first handle is in the first handle first configuration, the first actuator is in the first actuator first configuration and when the first handle is in the first handle second configuration, the first actuator is in the first actuator second configuration.
6. The interlock of claim 5, wherein when the first actuator is configured in the first actuator first configuration, the first circuit breaker switch is configured in the off position and when the first actuator is configured in the first actuator second configuration, the first circuit breaker switch is configured in the on position.
7. The interlock of claim 1, wherein the second actuator is configurable between a second actuator first configuration and a second actuator second configuration, wherein when the second handle is in the second handle first configuration, the second actuator is in the second actuator first configuration and when the second handle is in the second handle second configuration, the second actuator is in the second actuator second configuration.
8. The interlock of claim 7, wherein when the second actuator is configured in the second actuator first configuration, the second circuit breaker switch is configured in the off position and when the second actuator is configured in the second actuator second configuration, the second circuit breaker switch is configured in the on position.
9. The interlock of claim 1, wherein when the first handle is in the first handle first configuration, the first limiter plate is configured in a first plate first configuration and when the first handle is in the first handle second configuration, the first limiter plate is configured in a first plate second configuration, and when the second handle is in the second handle first configuration, the second limiter plate is configured in a second plate first configuration and when the second handle is in the second handle second configuration, the second limiter plate is configured in a second plate second configuration.
10. The interlock of claim 9, wherein when the first limiter plate is configured in the first plate second configuration, the first limiter plate limits movement of the second limiter plate, and when the second limiter plate is configured in the second plate second configuration, the second limiter plate limits movement of the first limiter plate.
11. An interlock for a panel having a first switch and a second switch, the interlock comprising: a first actuator movably associated with the first switch; a first limiter plate, and a first handle securely associated with the first actuator and the first limiter plate, wherein the first limiter plate is rotatably configurable between a first plate first configuration and a first plate second configuration; a second actuator movably associated with the second switch; a second limiter plate, and a second handle securely associated with the second actuator and the second limiter plate, wherein the second limiter plate is rotatably configurable between a second plate first configuration and a second plate second configuration, wherein, when the first limiter plate is in the first plate second configuration, the second limiter plate is configured in the second plate first configuration and prevented from being configured into the second plate second configuration by the first limiter plate, and when the second limiter plate is in the second plate second configuration, the first limiter plate is configured in the first plate first configuration and prevented from being configured into the first plate second configuration by the second limiter plate.
12. The interlock of claim 11, wherein the interlock includes an interlock housing and wherein the panel includes a panel housing and wherein the interlock housing is securely associated with the panel housing via an attaching means.
13. The interlock of claim 11, wherein the panel includes a third switch and wherein the interlock further comprises, a third actuator movably associated with the third switch; a third limiter plate, and a third handle securely associated with the third actuator and the third limiter plate, wherein the third limiter plate is configurable between a third plate first configuration and a third plate second configuration.
14. The interlock of claim 13, wherein when the first limiter plate is in the first plate second configuration, the second limiter plate is non-movably configured in the second plate first configuration and the third limiter plate is non-movably configured in the third plate first configuration, when the second limiter plate is in the second plate second configuration, the first limiter plate is non-movably configured in the first plate first configuration and the third limiter plate is non-movably configured in the third plate first configuration, and when the third limiter plate is in the third plate second configuration, the first limiter plate is non-movably configured in the first plate first configuration and the second limiter plate is non-movably configured in the second plate first configuration.
15. The interlock of claim 14, wherein the first actuator is configurable between a first actuator first configuration and a first actuator second configuration, wherein when the first limiter plate is in the first plate first configuration, the first actuator is in the first actuator first configuration and when the first limiter plate is in the first plate second configuration, the first actuator is in the first actuator second configuration.
16. The interlock of claim 15, wherein when the first actuator is configured in the first actuator first configuration, the first switch is configured in the off position and when the first actuator is configured in the first actuator second configuration, the first switch is configured in the on position.
17. The interlock of claim 14, wherein the second actuator is configurable between a second actuator first configuration and a second actuator second configuration, wherein when the second limiter plate is in the second plate first configuration, the second actuator is in the second actuator first configuration and when the second limiter plate is in the second plate second configuration, the second actuator is in the second actuator second configuration.
18. The interlock of claim 17, wherein when the second actuator is configured in the second actuator first configuration, the second switch is configured in the off position and when the second actuator is configured in the second actuator second configuration, the second switch is configured in the on position.
19. The interlock of claim 14, wherein the third actuator is configurable between a third actuator first configuration and a third actuator second configuration, wherein when the third limiter plate is in the third plate first configuration, the third actuator is in the third actuator first configuration and when the third limiter plate is in the third plate second configuration, the third actuator is in the third actuator second configuration.
20. The interlock of claim 19, wherein when the third actuator is configured in the third actuator first configuration, the third switch is configured in the off position and when the third actuator is configured in the third actuator second configuration, the third switch is configured in the on position.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The foregoing and other features and advantages of the present invention will be better understood from the following detailed description of illustrative embodiments, taken in conjunction with the accompanying drawings in which:
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DETAILED DESCRIPTION OF THE INVENTION
(32) In accordance with the present invention, an interlock article for use with a circuit box having circuit breakers used for multiple power inputs is provided and described herein, wherein the interlock article allows only one power source to be connected to the system at any one time. Generally, the invention includes a plurality of handles (one for each circuit breaker), where the handle is connected to a drive shaft. The drive shaft is supported by a bracket which acts as a pivot point and which is attached to the structure of the panel. An actuator is attached to the drive shaft such that when the drive shaft rotates, the actuator causes the switch arm of the circuit breaker to be configured between positions. For example, movement of the handle between a first and second position causes the switch arm of the circuit breaker to be configured between the on and off positions.
(33) The invention also includes a limiter plate associated with the drive shaft of each handle, wherein the limiter plate is configured such that the limiter plate of one handle interacts with the limiter plate of the adjacent handle. For example, when one handle is in the off position, the associated limiter plate does not interact with the limiter plate of the adjacent handle and allows the adjacent switching apparatus to be configured between the on and off configuration. However, when the handle is in the on position, the associated limiter plate interacts with the limiter plate of the adjacent handle and prevents the adjacent switching apparatus from being configured into the on configuration.
(34) It should be appreciated that although the present invention is disclosed herein with reference to two circuit breaker switches, it is contemplated that the scope of the invention covers two or more circuit breaker switches.
(35) Referring to
(36) Referring to the FIGS., the first interlock handle 106 is securely and non-movably associated with the first handle drive shaft 108 and the first handle drive shaft 108 is located within the first handle cavity 132 such that the first handle drive shaft 108 is adjacent the front surface 132 of the housing front panel 130 and the first handle drive shaft 108 is protruding from the rear surface 134 of the housing front panel 130. Additionally, the second interlock handle 114 is securely and non-movably associated with the second handle drive shaft 116 and the second handle drive shaft 116 is located within the second handle cavity 134 such that the second handle drive shaft 116 is adjacent the front surface 132 of the housing front panel 130 and the second handle drive shaft 116 is protruding from the rear surface 134 of the housing front panel 130. It should be appreciated that the first and second handle drive shafts 108, 116 are movable relative to the housing front panel 130 so as to rotate about an imaginary axis that runs along the length of the handle drive shafts 108, 116. It should be further appreciated that the first and second handle drive shafts 108, 116 are configured to be rotatable between a first configuration (in this embodiment such that the first and second interlock handles 106, 114 are oriented to be directed vertically downward) and a second configuration (in this embodiment such that the first and second interlock handles 106, 114 are oriented to be horizontal). As explained in more detail hereinafter, in this embodiment when the first and second handle drive shafts 108, 116 are in the first configuration, the respective circuit breaker switch is in the off position and when the in the second configuration, the respective circuit breaker switch is in the on position.
(37) The first limiter plate 110 and the first actuator 112 is securely and non-movably associated with the first handle drive shaft 108 such that the first limiter plate 110 is located proximate the rear surface 134 of the housing front panel 130 and the first actuator 112 is located proximate the first limiter plate 110. Additionally, the second limiter plate 118 and the second actuator 120 is securely and non-movably associated with the second handle drive shaft 116 such that the second limiter plate 118 is located proximate the rear surface 134 of the housing front panel 130 and the second actuator 120 is located proximate the second limiter plate 118. The first limiter plate 110 and the first actuator 112 is oriented as shown in
(38) The breaker housing 102 is then securely associated with a first circuit breaker switch 136 and a second circuit breaker switch 138, such that when the first interlock handle 106 is configured in the first configuration, a portion of the circuit switch interface surface 128 is located proximate the top of the first circuit breaker switch 136 and when the first interlock handle 106 is configured in the second configuration, a portion of the circuit switch interface surface 128 is located proximate the bottom of the first circuit breaker switch 136. Similarly, when the second interlock handle 114 is configured in the first configuration, a portion of the circuit switch interface surface 128 is located proximate the top of the second circuit breaker switch 138 and when the second interlock handle 114 is configured in the second configuration, a portion of the circuit switch interface surface 128 is located proximate the bottom of the first circuit breaker switch 138. It should be appreciated that when the first limiter plate 110 and the second limiter plate 118 are associated with the first handle drive shaft 108 and the second handle drive shaft 116, respectively, they are located adjacent each other such that if they are not oriented correctly, any rotation of one will cause the first and second limiter plates 110, 118 to contact each other preventing further rotation.
(39) It should be further appreciated that the first limiter plate 110 and the second limiter plate 118 are arranged such that when the first and second interlock handles 106, 114 are in the first configuration, either one of the first and second interlock handles 106, 114 can be configured into the second configuration. If the first interlock handle 106 is configured into the second configuration, then the second interlock handle 114 must be in the first configuration. In this situation, the first limiter plate 110 will prevent the second limiter plate 118 (and thus the second interlock handle 114 and second actuator 120) from being configurable into the second configuration. Likewise, if the second interlock handle 114 is configured into the second configuration, then the first interlock handle 106 must be in the first configuration. In this situation, the second limiter plate 118 will prevent the first limiter plate 110 (and thus the first interlock handle 106 and first actuator 112) from being configurable into the second configuration. In this way, the interlock article 100 advantageously only allows one circuit breaker switch to be turned on at any one time.
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(44) It should be appreciated that although the invention is disclosed herein with regards to an electrical panel (or circuit breaker panel) having a plurality of breaker switches, it is contemplated that the invention may be applied to any panel that incorporates actuators (or switches). Additionally, although the limiter plates are discussed as being associated with the shafts of each handle, other embodiments which use different arrangements are contemplated to be within the scope of the invention. For example, the limiter places do not necessarily have to be directly associated with the shaft of the handles and may be indirectly associated via gears, servos, belts, etc.
(45) It should be appreciated that although the invention has been described as a mechanical interlock, the invention may be embodied, in whole or in part, via software, firmware and/or hardware. Moreover, it should be appreciated that although the invention may be implemented, in whole or in part, via software, hardware, firmware and/or any combination thereof, it is also contemplated that a method for carrying out the operation of the invention may also be implemented, in whole or in part, without the use of software, hardware, firmware and/or any combination thereof.
(46) Moreover, it should be appreciated that each of the elements of the present invention may be implemented in part, or in whole, in any order suitable to the desired end purpose. In accordance with an exemplary embodiment, the processing required to practice the method of the present invention, either in whole or in part, may be implemented, wholly or partially, by a controller operating in response to a machine-readable computer program. In order to perform the prescribed functions and desired processing, as well as the computations therefore (e.g. execution control algorithm(s), the control processes prescribed herein, and the like), the controller may include, but not be limited to, a processor(s), computer(s), memory, storage, register(s), timing, interrupt(s), communication interface(s), and input/output signal interface(s), as well as combination comprising at least one of the foregoing. It should also be appreciated that the embodiments disclosed herein are for illustrative purposes only and include only some of the possible embodiments contemplated by the present invention.
(47) Furthermore, the invention may be wholly or partially embodied in the form of a computer system or controller implemented processes. It should be appreciated that any type of computer system (as is well known in the art) may be used and that the invention may be implemented via any type of network setup, including but not limited to a LAN and/or a WAN (wired or wireless). The method of the invention may also be embodied in the form of computer program code containing instructions embodied in tangible media, such as floppy diskettes, CD-ROMs, hard drives, and/or any other computer-readable medium, wherein when the computer program code is loaded into and executed by a computer or controller, the computer or controller becomes an apparatus for practicing the invention. When implemented on a general-purpose controller the computer program code segments may configure the controller to create specific logic circuits.
(48) While the invention has been described with reference to an exemplary embodiment, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims. Moreover, unless specifically stated any use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.