Patent US3142737A successfully refreshed from Google Patents.
US3142737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat responsive wire circuit breaker
Assignee: Wood Electric Corp
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Filing: 1960-09-09
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Granted: 1964-07-28
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Expires: 1980-09-09
Abstract
No abstract record available.
Inventors
- 👤 Lawrence W Brackett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:23
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H71/18; H01H73/00; H01H73/22; H01H73/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A CIRCUIT BREAKER COMPRISING: FIXED CONTACT MEANS; MOVABLE CONTACT MEANS COOPERABLE WITH THE FIXED CONTACT MEANS FOR CLOSING A CIRCUIT; MEANS BIASING THE MOVABLE CONTACT MEANS TO OPEN CIRCUIT POSITION; AN OPERATING MEMBER; A PIVOTALLY MOUNTED CAM MEMBER; ACTUATING MEANS PIVOTALLY CONNECTED TO THE OPERATING MEMBER AND TO THE MOVABLE CONTACT MEANS, SAID ACTUATING MEANS BEING ADAPTED SLIDINGLY TO ENGAGE THE CAM MEMBER FOR URGING THE MOVABLE CONTACT MEANS TO CLOSED CIRCUIT POSITION IN RESPONSE TO MOVEMENT OF THE OPERATING MEMBER WHILE SAID CAM MEMBER IS MAINTAINED IN ACTUATING POSITION; AN ELONGATE LATCH MOUNTED ON A PIVOT AND NORMALLY ADAPTED TO HOLD THE CAM MEMBER IN ACTUATING POSITION; BIASING MEANS ADAPTED FOR ROTATING THE LATCH TO RELEASE THE CAM MEMBER FROM ACTUATING POSITION; A ROLLER ADJACENT TO SAID PIVOT; AND A HEAT EXPANSIBLE WIRE EXTENDING ALONG SAID LATCH AND DEFLECTED BY SAID ROLLER TO ENGAGE THE LATCH, SAID WIRE BEING
Claim 2
Dependent Claim
150 words
A CIRCUIT BREAKER COMPRISING: FIXED CONTACT MEANS; MOVABLE CONTACT MEANS COOPERABLE WITH THE FIXED CONTACT MEANS FOR CLOSING A CIRCUIT; MEANS BIASING THE MOVABLE CONTACT MEANS TO OPEN CIRCUIT POSITION; AN OPERATING MEMBER; A PIVOTALLY MOUNTED CAM MEMBER; ACTUATING MEANS PIVOTALLY CONNECTED TO THE OPERATING MEMBER AND TO THE MOVABLE CONTACT MEANS, SAID ACTUATING MEANS BEING ADAPTED SLIDINGLY TO ENGAGE THE CAM MEMBER FOR URGING THE MOVABLE CONTACT MEANS TO CLOSED CIRCUIT POSITION IN RESPONSE TO MOVEMENT OF THE OPERATING MEMBER WHILE SAID CAM MEMBER IS MAINTAINED IN ACTUATING POSITION; AN ELONGATE LATCH MOUNTED ON A PIVOT AND NORMALLY ADAPTED TO HOLD THE CAM MEMBER IN ACTUATING POSITION; BIASING MEANS ADAPTED FOR ROTATING THE LATCH TO RELEASE THE CAM MEMBER FROM ACTUATING POSITION; A ROLLER ADJACENT TO SAID PIVOT; AND A HEAT EXPANSIBLE WIRE EXTENDING ALONG SAID LATCH AND DEFLECTED BY SAID ROLLER TO ENGAGE THE LATCH, SAID WIRE BEING
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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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |