US3815064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter protective device
Assignee: Westinghouse Electric Corp
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Filing: 1973-03-27
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Granted: 1974-06-04
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Expires: 1993-03-27
Abstract
Abstract A circuit interrupter protective device responsive to abnormal currents in conductors of an electrical distribution system characterized by a circuit breaker within a first insulating housing and having a mechanism for opening and closing separable contacts which mechanism comprises a releasable member movable from latched to unlatched positions, trip means comprising a stationary magnetic structure for each conductor as well as a coil and core assembly and armature therefor, a trip bar movable to unlatch the circuit breaker mechanism and biased in the latched position, lever means associated with the stationary magnetic structure for moving the trip bar to the unlatched position, the lever means comprising the armature and being movable in response to abnormal currents in at least one of the conductors, the lever means being biased away from the core assembly, and means for adjusting the spacing between the lever and core assembly.
Inventors
- 👤 A Maier
- 👤 W Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:29
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/40; H01H71/74; H01H71/7418; H01H69/00; H01H69/01; H01H2069/013; H01H2071/7481
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
236 words
A circuit interrrupter protective device for responding to abnormal currents in the conductors of an electrical distribution system and for actuating a circuit interrupter to open upon the occurrence of predetermined operating conditions, comprising a circuit breaker having a first insulating housing, a cirucit breaker mechanism with the housing and comprising separable contacts adapted to be connected as part of the distribution system, the circuIt breaker mechanism comprising a releasable member movable from a latched position to effect opening of the contacts, a latch lever movable between latched and unlatched positions of the releasable member and being biased in the latched position, a stationary magnetic structure for each conductor of the distribution system and comprising a coil and core assembly, an armature, a trip bar movable to unlatch the latch lever and being biased in the latched position, lever means associated with each stationary magnetic sttructure for moving the trip bar to the unlatched position, the lever means comprising the armature and being movable in response to abnormal currents in at least one of the conductors, the lever means comprising a trip lever which is biased away from the core assembly, means for adjusting the spacing between the lever and core assembly and a bimetallic strip has one end mounted on the conductor and another end disposed in a position adjacent to the trip bar to effect movement of the trip bar to the unlatched position.
Claim 2
Dependent Claim
236 words
A circuit interrrupter protective device for responding to abnormal currents in the conductors of an electrical distribution system and for actuating a circuit interrupter to open upon the occurrence of predetermined operating conditions, comprising a circuit breaker having a first insulating housing, a cirucit breaker mechanism with the housing and comprising separable contacts adapted to be connected as part of the distribution system, the circuIt breaker mechanism comprising a releasable member movable from a latched position to effect opening of the contacts, a latch lever movable between latched and unlatched positions of the releasable member and being biased in the latched position, a stationary magnetic structure for each conductor of the distribution system and comprising a coil and core assembly, an armature, a trip bar movable to unlatch the latch lever and being biased in the latched position, lever means associated with each stationary magnetic sttructure for moving the trip bar to the unlatched position, the lever means comprising the armature and being movable in response to abnormal currents in at least one of the conductors, the lever means comprising a trip lever which is biased away from the core assembly, means for adjusting the spacing between the lever and core assembly and a bimetallic strip has one end mounted on the conductor and another end disposed in a position adjacent to the trip bar to effect movement of the trip bar to the unlatched position.
Claim 3
Dependent Claim
80 words
The circuit interrupter protective device of claim 1 in which the magnetic structure, the trip bar, the lever means, and the space adjusting means are mounted within a second insulating housing, the second insulating housing being mounted within the first insulating housing, and in which mounting means are provided for the lever means and comprise interfitting notch and prong members, one of th members being on the second housing and the others of the members being on the lever means.
Claim 4
Dependent Claim
27 words
The circuit interrupter protective device of claim 2 in which the notch members are in the trip lever and the prong members are in the second housing.
Claim 5
Dependent Claim
28 words
The circuit interrupter protective device of claim 3 in which the trip lever is retained in place for pivotal movement by a cover on the second insulating housing.
Claim 6
Dependent Claim
36 words
The circuit interrupter protective device of claim 2 in which the second housing comprises a molded member of electrically insulating material and having molded notches therein, and the trip bar being rotatably mounted in the notches.
Claim 7
Dependent Claim
35 words
The circuit interrupter protective device of claim 5 in which the second housing comprises a housing chamber divided into isolated compartments by spaced housing ribs, and the molded notches being disposed in the spaced ribs.
Claim 8
Dependent Claim
54 words
The circuit interrupter protective device of claim 2 in which the lever means comprise first and second levers, the first lever comprising the armature, the second lever comprises one of the notch and prong members and being engageable with the first lever to effect the spacing between the first lever and the core assembly.
Claim 9
Dependent Claim
39 words
The circuit interrupter protective device of claim 7 in which the means for adjusting the spacing comprises an adjustable knob having a cam surface engaging the second lever to effect movement of the first lever to the desired spacing.
Claim 10
Dependent Claim
43 words
The circuit interrupter protective device of claim 8 in which the means for adjusting the spacing also comprises an indexing member having a projection in one surface thereof, and the adjusting knob having spaced notches for receiving the projection at various knob settings.
References Cited (Backward Citations)
US3593234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |