Patent US4223288A successfully refreshed from Google Patents.
US4223288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually operable and shunt controllable circuit breaker
Assignee: Southern California Edison Co
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Filing: 1979-01-15
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Granted: 1980-09-16
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Expires: 1999-01-15
Abstract
Abstract A manually operable circuit breaker is provided with a spring powered trip-free contact operating mechanism. A fault current responsive thermal-magnetic automatic trip means is included as in an auxiliary means for operation of the circuit breaker from a remote location. Both the auxiliary means and the operating mechanism operate to open and close the same set of contacts.
Inventors
- 👤 Kent P. Stiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:15
CPC Classifications
H; H01; H01H; H01H89/00; H01H89/06; H01H89/08; H01H83/00; H01H83/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
A circuit breaker including a cooperating contact means, a manually operable overcenter spring-type operating mechanism for opening and closing said contact means, automatic trip means operatively connected to said operating mechanism and operative responsive to predetermined fault current conditions to actuate said operating mechanism for opening said contact means, auxiliary means including a first section operable independently of said operating mechanism and said trip means to open said contact means responsive to a first control signal generated remote from said circuit breaker.
Claim 2
Dependent Claim
82 words
A circuit breaker including a cooperating contact means, a manually operable overcenter spring-type operating mechanism for opening and closing said contact means, automatic trip means operatively connected to said operating mechanism and operative responsive to predetermined fault current conditions to actuate said operating mechanism for opening said contact means, auxiliary means including a first section operable independently of said operating mechanism and said trip means to open said contact means responsive to a first control signal generated remote from said circuit breaker.
Claim 3
Dependent Claim
95 words
A circuit breaker contact as set forth in claim 1 in which the first section of the auxiliary means is operable from a first to a second position upon receipt of the first control signal, said auxiliary means also including a second section for maintaining said first section in said second position, said contact means being held open by said first section when the latter is in said second position, said second section being releaseable to permit said first section to return to said first position wherein said operating mechanism may close said contact means.
Claim 4
Dependent Claim
60 words
A circuit breaker contact as set forth in claim 1 in which the first section of the auxiliary means includes a solenoid having a coil and an armature movable from a first to a second position upon energization of said coil to act directly on the contact means for opening the latter responsive to receipt of said first control signal.
Claim 5
Dependent Claim
53 words
A circuit breaker contact as set forth in claim 3 in which the auxiliary means also includes a second section for maintaining said armature in said second position, said second section being selectively releaseable to permit said armature to return to said first position wherein said operating mechanism may close said contact means.
Claim 6
Dependent Claim
53 words
A circuit breaker contact as set forth in claim 4 in which the second section of the auxiliary means includes latch portion for holding the armature in said second position and solenoid energizable by a second control signal to release said armature responsive to receipt of a second control signal by said solenoid.
Claim 7
Dependent Claim
40 words
A circuit breaker contact as set forth in claim 3 in which the contact means includes a movable contact mounted at one end of a movable contact arm, said armature when in said second position operatively engaging said contact arm.
Claim 8
Dependent Claim
38 words
A circuit breaker contact as set forth in claim 6 in which the operating mechanism also includes an operating spring connected to said contact arm to act through the latter and bias said armature to said first position.
Claim 9
Dependent Claim
57 words
A circuit breaker contact as set forth in claim 7 in which the operating means also includes a releaseable cradle normally latched in a holding position and movable to a released position through operation of said trip means upon the occurrence of said predetermined fault current conditions, said operating spring biasing said cradle toward said released positions.
Claim 10
Dependent Claim
64 words
A circuit breaker contact as set forth in claim 8 in which the operating means includes a manually operable member supporting said contact arm at the other end thereof, said member normally being movable between contact CLOSED and full OPEN positions, with said armature in said second position said contact arm being in a position intermediate its contact closed and its fully open positions.
Claim 11
Dependent Claim
33 words
A circuit breaker contact as set forth in claim 1 also including a single insulating housing wherein said contact means, said operating mechanism, said automatic trip means and said auxiliary means are disposed.
References Cited (Backward Citations)
US4164719A
Cited
US4167716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |