Protection device with a sandwiched cantilever breaker mechanism
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01H-075/00
H01H-073/12
H01H-073/00
H01H-083/06
출원번호
US-0355648
(2012-01-23)
등록번호
US-8446234
(2013-05-21)
발명자
/ 주소
Weeks, Richard
Morgan, Kent R.
Richards, Jeffrey C.
Finlay, Sr., David A.
Murphy, Patrick J.
Savicki, Jr., Gerald R.
출원인 / 주소
Pass & Seymour, Inc.
대리인 / 주소
Malley, Daniel P.
인용정보
피인용 횟수 :
0인용 특허 :
97
초록▼
The present invention is directed to a protective electrical wiring device that includes a circuit assembly that has a fault detection circuit coupled to the plurality of line terminals, the fault detection circuit being configured to detect perturbations corresponding to a fault condition or a simu
The present invention is directed to a protective electrical wiring device that includes a circuit assembly that has a fault detection circuit coupled to the plurality of line terminals, the fault detection circuit being configured to detect perturbations corresponding to a fault condition or a simulated fault condition, the fault detection circuit being configured to provide a fault detection signal in response to detecting the perturbations corresponding to the fault condition or the simulated fault condition. An interrupting contact assembly is coupled to the fault detection circuit, the interrupting contact assembly including a contact assembly configured to provide electrical continuity between the plurality of line terminals, the plurality of feed-through load terminals, and the plurality of receptacle load terminals in a reset state, and interrupt the electrical continuity in a tripped state in response to the fault detection signal.
대표청구항▼
1. A protective electrical wiring device comprising: a housing assembly including a plurality of line terminals, a plurality of feed-through load terminals, and a plurality of receptacle load terminals;a circuit assembly including a fault detection circuit coupled to the plurality of line terminals,
1. A protective electrical wiring device comprising: a housing assembly including a plurality of line terminals, a plurality of feed-through load terminals, and a plurality of receptacle load terminals;a circuit assembly including a fault detection circuit coupled to the plurality of line terminals, the fault detection circuit being configured to detect perturbations corresponding to a fault condition or a simulated fault condition, the fault detection circuit being configured to provide a fault detection signal in response to detecting the perturbations corresponding to the fault condition or the simulated fault condition;an interrupting contact assembly coupled to the fault detection circuit, the interrupting contact assembly including a contact assembly configured to provide electrical continuity between the plurality of line terminals, the plurality of feed-through load terminals, and the plurality of receptacle load terminals in a reset state, and interrupt the electrical continuity in a tripped state in response to the fault detection signal such that the plurality of line terminals, the plurality of feed-through load terminals, and the plurality of receptacle load terminals are isolated from each other, the contact assembly including a hot contact mechanism and a neutral contact mechanism configured to move in unison between the reset state and the tripped state, the hot contact mechanism comprising a hot contact member including a first hot contact disposed at an end portion of a first hot arm, a second hot contact disposed at an end portion of a second hot arm, and a third hot contact disposed at an end portion of a third hot arm, the neutral contact mechanism comprising a neutral contact member including a first neutral contact disposed at an end portion of a first neutral arm, a second neutral contact disposed at an end portion of a second neutral arm, and a third neutral contact disposed at an end portion of a third neutral arm. 2. The device of claim 1, wherein the hot contact member is substantially Y-shaped, and wherein the neutral contact member is substantially Y-shaped. 3. The device of claim 1, wherein at least one of the first hot arm, second hot arm or third hot arm include curvilinear portions, and wherein at least one of the first neutral arm, second neutral arm or third neutral arm include curvilinear portions. 4. The device of claim 1, wherein the hot contact mechanism is coupled to a first portion of a latch block mechanism at substantially a mid-point of the hot contact mechanism such that the first hot arm is disposed on a first side of a central latitudinal axis, whereas the second hot arm and the third hot arm are disposed on a second side of the central latitudinal axis, and wherein the neutral contact mechanism is coupled to a second portion of the latch block mechanism at substantially a mid-point of the neutral contact mechanism such that the first neutral arm is disposed on the first side of the central latitudinal axis, whereas the second neutral arm and the third neutral arm are disposed on the second side of the central latitudinal axis. 5. The device of claim 1, wherein the plurality of feed-through load terminals include at least one feed-through load contact and the plurality of receptacle load terminals include at least one receptacle load contact, at least one of the at least one feed-through load contact and the at least one receptacle load contact being disposed on a terminal arm that has a longitudinal centerline that is substantially perpendicular to a central longitudinal axis of the housing assembly. 6. The device of claim 1, wherein the first hot contact, the second hot contact and the third hot contact are configured to close with a hot line contact, a hot feed-through load contact and a hot receptacle load contact, respectively, in the reset state and are configured to open in the tripped state. 7. The device of claim 6, wherein the first neutral contact, the second neutral contact and the third neutral contact are configured to close with a neutral line contact, a neutral feed-through load contact and a neutral receptacle load contact, respectively, in the reset state and are configured to open in the tripped state. 8. The device of claim 1, wherein the interrupting contact assembly includes an actuator assembly configured to drive the hot contact mechanism and the neutral contact mechanism into the tripped state in response to the fault detection signal. 9. The device of claim 8, wherein the actuator assembly includes an electronic switch coupled to at least one solenoid. 10. The device of claim 9, further comprising: a reset button mechanism accessible via a front cover of the housing assembly; anda set of switch contacts coupled to the electronic switch, the set of switch contacts being closed by a user actuation of the reset button mechanism to energize the at least one solenoid if the plurality of line terminals are coupled to a source of AC power such that the hot contact mechanism and the neutral contact mechanism are moved into the reset position. 11. The device of claim 10, further comprising a physical barrier configured to prevent the reset button mechanism from engaging the interrupting contact assembly or moving the hot contact mechanism and the neutral contact mechanism into the reset position in response to a user actuation of the reset button mechanism, wherein the at least one solenoid is energized to remove the physical barrier. 12. The device of claim 10, wherein the electronic switch is a silicon controlled rectifier (SCR). 13. The device of claim 12, wherein the SCR is responsive to the fault detection signal and the set of switch contacts. 14. The device of claim 9, wherein the at least one solenoid includes a trip solenoid. 15. The device of claim 9, wherein the at least one solenoid includes a reset solenoid. 16. The device of claim 1, wherein the interrupting contact assembly includes a trip solenoid and a reset solenoid. 17. The device of claim 16, wherein at least one of the trip solenoid and the reset solenoid are substantially normal to a front cover of the housing assembly. 18. The device of claim 16, wherein the reset solenoid includes a central longitudinal axis normal to a front cover of the housing assembly, the device further including a spring element characterized by a spring central longitudinal axis, the spring central longitudinal axis being collinear with the central longitudinal axis. 19. The device of claim 16, wherein the reset solenoid is responsive to a silicon controlled rectifier (SCR). 20. The device of claim 16, wherein the trip solenoid is responsive to a silicon controlled rectifier (SCR). 21. The device of claim 1, further comprising a reset mechanism coupled to the interrupting contact assembly, the reset mechanism being configured to drive the hot contact mechanism and the neutral contact mechanism into the reset state in response to a reset stimulus. 22. The device of claim 21, wherein the reset stimulus includes a user-actuation of the reset mechanism. 23. The device of claim 21, wherein the reset stimulus includes a movement of a solenoid armature. 24. The device of claim 21, wherein the reset mechanism comprises: a reset button mechanism accessible via a front cover of the housing assembly;a physical bather configured to prevent the reset button mechanism from engaging the interrupting contact assembly or moving the hot contact mechanism and the neutral contact mechanism into the reset position in response to a user actuation of the reset button mechanism; anda set of switch contacts coupled to the plurality of line terminals, the set of switch contacts being closed by a user actuation of the reset button mechanism, the set of switch contacts providing a wiring detection signal if the plurality of line terminals are coupled to a source of AC power, the wiring detection signal causing the removal of the physical barrier such that the hot contact mechanism and the neutral contact mechanism are moved into the reset state in response to the user actuation of the reset button mechanism. 25. The device of claim 1, wherein the circuit assembly includes at least one wiring state detection circuit configured to provide a proper wiring detection signal if the plurality of line terminals are coupled to a source of AC power. 26. The device of claim 25, wherein the proper wiring detection signal does not conduct, produce or generate the fault condition or the simulated fault condition. 27. The device of claim 25, wherein the at least one wiring state detection circuit includes a set of switch contacts coupled between a power supply circuit and an electronic switch. 28. The device of claim 27, wherein a control gate of the electronic switch is responsive to the at least one wiring state detection circuit and the fault detection circuit. 29. The device of claim 25, wherein the at least one wiring state detection circuit is configured to provide a proper wiring detection signal or a miswire detection signal. 30. The device of claim 29, wherein the proper wiring detection signal or the miswire detection signal result in the simulated fault condition. 31. The device of claim 29, wherein the at least one wiring state detection circuit is disabled after the proper wiring detection signal is conducted. 32. The device of claim 1, wherein the fault condition or the simulated fault condition correspond to a ground fault, a grounded neutral condition or an arc fault. 33. The device of claim 1, further comprising: a reset button mechanism accessible via a front cover of the housing assembly; anda set of switch contacts coupled to the plurality of line terminals, the set of switch contacts being closed by a user actuation of the reset button mechanism, the set of switch contacts providing a wiring detection signal if the plurality of line terminals are coupled to a source of AC power.
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