US3301984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring closed circuit breaker
Assignee: ABB Inc USA
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Filing: 1965-03-02
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Granted: 1967-01-31
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Expires: 1985-03-02
Abstract
No abstract record available.
Inventors
- 👤 George A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:36
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/30; H01H3/3042; Y; Y10; Y10T; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A CIRCUIT BREAKER HAVING A STATIONARY AND A COOPERATING MOVABLE CONTACT, A BRIDGE ROTATABLY MOUNTED AT ONE END AND RECEIVING SAID MOVABLE CONTACT AT THE OTHER END THEREOF; A TOGGLE ASSEMBLY HAVING A STATIONARY FIRST END AND BEING PIVOTALLY LINKED AT THE SECOND END THEREOF TO SAID BRIDGE; TORSION SPRING MEANS POSITIONED ADJACENT SAID TOGGLE ASSEMBLY FIRST END AND HAVING A STATIONARY END AND A MOVABLE END; A FIRST LINK PIVOTALLY MOUNTED AT SAID TOGGLE ASSEMBLY FIRST END; ROTATABLE SPRING CHARGING MEANS SPACED APART FROM SAID TOGGLE ASSEMBLY FIRST END AND HAVING A CRANK ARM LINKED TO THE SECOND END OF SAID FIRST LINK BY A LEVER ARM; SAID FIRST LINK HAVING A ROD COUPLED TO THE SECOND END THEREOF AND ENGAGING SAID TORSION SPRING MOVABLE END TO CHARGE SAID SPRING UNDER CONTROL OF SAID SPRING CHARGING MEANS; SAID TOGGLE ASSEMBLY HAVING AT LEAST ONE COLLAPSIBLE KNEE; LATCH MEANS POSITIONED ADJACENT SAID CRANK ARM AND HAVING BIAS MEANS FOR ABUTTING SAID CRANK ARM TO LATCH SAID TORSION SPRING IN THE FULLY CHARGED POSITION; MEANS FOR RELEASING SAID LATCH MEANS TO DRIVE SAID FIRST LINK ROD AGAINST SAID COLLAPSIBLE KNEE TO RAPIDLY CLOSE SAID COOPERATING CONTACTS.
Claim 2
Dependent Claim
195 words
A CIRCUIT BREAKER HAVING A STATIONARY AND A COOPERATING MOVABLE CONTACT, A BRIDGE ROTATABLY MOUNTED AT ONE END AND RECEIVING SAID MOVABLE CONTACT AT THE OTHER END THEREOF; A TOGGLE ASSEMBLY HAVING A STATIONARY FIRST END AND BEING PIVOTALLY LINKED AT THE SECOND END THEREOF TO SAID BRIDGE; TORSION SPRING MEANS POSITIONED ADJACENT SAID TOGGLE ASSEMBLY FIRST END AND HAVING A STATIONARY END AND A MOVABLE END; A FIRST LINK PIVOTALLY MOUNTED AT SAID TOGGLE ASSEMBLY FIRST END; ROTATABLE SPRING CHARGING MEANS SPACED APART FROM SAID TOGGLE ASSEMBLY FIRST END AND HAVING A CRANK ARM LINKED TO THE SECOND END OF SAID FIRST LINK BY A LEVER ARM; SAID FIRST LINK HAVING A ROD COUPLED TO THE SECOND END THEREOF AND ENGAGING SAID TORSION SPRING MOVABLE END TO CHARGE SAID SPRING UNDER CONTROL OF SAID SPRING CHARGING MEANS; SAID TOGGLE ASSEMBLY HAVING AT LEAST ONE COLLAPSIBLE KNEE; LATCH MEANS POSITIONED ADJACENT SAID CRANK ARM AND HAVING BIAS MEANS FOR ABUTTING SAID CRANK ARM TO LATCH SAID TORSION SPRING IN THE FULLY CHARGED POSITION; MEANS FOR RELEASING SAID LATCH MEANS TO DRIVE SAID FIRST LINK ROD AGAINST SAID COLLAPSIBLE KNEE TO RAPIDLY CLOSE SAID COOPERATING CONTACTS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |