Patent US3683350A successfully refreshed from Google Patents.
US3683350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuit breaker with illuminated trip indicator
Assignee: Schneider Electric USA Inc
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Filing: 1969-11-06
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Granted: 1972-08-08
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Expires: 1989-11-06
Abstract
Abstract The circuit breaker has a window in a cover of its molded case through which light from a neon lamp is visible. The lamp is connected in an RC flashing circuit energized from the line side of the circuit breaker through a circuit controlled by a small snap switch. The snap switch is operated upon release of a releasably latchable member of the circuit breaker operating mechanism to cause flashing of the lamp whenever the circuit breaker is in its tripped condition.
Inventors
- 👤 Wayne A Shedenheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:27
CPC Classifications
H; H01; H01H; H01H73/00; H01H73/02; H01H73/12; H01H73/14; H01H9/00; H01H9/18; H01H2009/188
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
194 words
A three-pole electric circuit breaker comprising a molded case having three compartments, a common trip bar pivotally mounted in the case and extending through a center one of the compartments into each of two outer ones of the compartments, three pairs of separable contacts disposed respectively in the compartments, a releasably latchable trip lever pivotally mounted in the center compartment and releasable from a latched position to effect separation of the three pairs of contacts, an intermediate latch member pivotally mounted in the center compartment and latchable by the common trip bar, the trip lever being latchable by the intermediate latch member, and a switch in the center compartment having a depressible operating button held in a depressed position by the intermediate latch member, when the trip lever is latched by the intermediate latch member and the intermediate latch member is latched by the common trip bar, to hold the switch in an open-contact condition, and released by the intermediate latch member to allow the switch to assume a closed-contact condition when the intermediate latch member is released by the common trip bar and the trip lever is released by the intermediate latch member.
Claim 2
Dependent Claim
194 words
A three-pole electric circuit breaker comprising a molded case having three compartments, a common trip bar pivotally mounted in the case and extending through a center one of the compartments into each of two outer ones of the compartments, three pairs of separable contacts disposed respectively in the compartments, a releasably latchable trip lever pivotally mounted in the center compartment and releasable from a latched position to effect separation of the three pairs of contacts, an intermediate latch member pivotally mounted in the center compartment and latchable by the common trip bar, the trip lever being latchable by the intermediate latch member, and a switch in the center compartment having a depressible operating button held in a depressed position by the intermediate latch member, when the trip lever is latched by the intermediate latch member and the intermediate latch member is latched by the common trip bar, to hold the switch in an open-contact condition, and released by the intermediate latch member to allow the switch to assume a closed-contact condition when the intermediate latch member is released by the common trip bar and the trip lever is released by the intermediate latch member.
Claim 3
Dependent Claim
88 words
An electric circuit breaker as claimed in claim 1 wherein the case has a window therein, and including an electric lamp in the case visible through the window, a pair of line terminals mounted on the case, and flashing means effecting repetitive on-and-off flashing of the lamp only when the circuit breaker is in a tripped condition, the flashing means including a diode, a resistor, and a capacitor in a series circuit with the switch across the line terminals, the lamp being connected in parallel with the capacitor.
Claim 4
Dependent Claim
31 words
An electric circuit breaker as claimed in claim 2 wherein the case includes a cover having an interior recess, and the diode, resistor, capacitor, and lamp are mounted in the recess.
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US1649011A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |