Patent US4928079A successfully refreshed from Google Patents.
US4928079A
Expired / Lapsed
US
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Circuit breaker auxiliary switch assembly
Assignee: Westinghouse Electric Corp
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Filing: 1988-07-25
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Granted: 1990-05-22
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Expires: 2008-07-25
Abstract
Abstract A circuit breaker auxiliary switch structure characterized by a contact arm carrying a first contact movable between open and closed positions with a second contact. An auxiliary switch is disposed in the path of movement of the contact arm and operable to open or close an auxiliary circuit associated with a circuit breaker.
Inventors
- 👤 Andrew J. Male
- 👤 Melvin A. Carrodus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:42
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/46
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
A circuit braker, comprising: an electrically insulating housing; a circuit breaker means within the housing and comprising first and second contacts operable between open and closed positions; a releasable mechanism in an initial position and movable when released to a tripped position to effect automatic opening of the contacts; the first contact carrying arm movable between open and closed positions of the contacts; and auxiliary switch means including a plunger in the path of movement of the arm for opening or closing an auxiliary circuit when the arm is actuated, said plunger having a flexible portion capturing said arm which accommodates overtravel of said arm when said arm is actuated.
Claim 2
Dependent Claim
110 words
A circuit braker, comprising: an electrically insulating housing; a circuit breaker means within the housing and comprising first and second contacts operable between open and closed positions; a releasable mechanism in an initial position and movable when released to a tripped position to effect automatic opening of the contacts; the first contact carrying arm movable between open and closed positions of the contacts; and auxiliary switch means including a plunger in the path of movement of the arm for opening or closing an auxiliary circuit when the arm is actuated, said plunger having a flexible portion capturing said arm which accommodates overtravel of said arm when said arm is actuated.
Claim 3
Dependent Claim
26 words
The switch of claim 1 in which switch means comprises a frame, a switch on the frame, and the plunger being movably mounted on the frame.
Claim 4
Dependent Claim
29 words
The switch of claim 2 in which the plunger is slidably mounted and engages a switch actuator for opening and closing the auxiliary switch when the arm is moved.
Claim 5
Dependent Claim
21 words
The switch of claim 3 in which the arm actuates the switch when the arm moves to the open contact position.
References Cited (Backward Citations)
US3955162A
Cited
US4794356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |