Patent US2090042A successfully refreshed from Google Patents.
US3299231A
Expired / Lapsed
US
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Tie pin with improved fastening means for circuit breaker handles
Assignee: Heinemann Electric Co
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Filing: 1966-01-28
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Granted: 1967-01-17
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Expires: 1986-01-28
Abstract
No abstract record available.
Inventors
- 👤 William W Camp
- 👤 Mune Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:06
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/1009; H01H71/1018; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32861
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN COMBINATION, SIDE-BY-SIDE CIRCUIT BREAKER HANDLES AND A TIE PIN FOR CONNECTING THE HANDLES, SAID TIE PIN COMPRISING A SHAFT CONNECTING SAID HANDLES, SAID SHAFT HAVING A LOCAL PROJECTION, SAID SHAFT BEING SMALL ENOUGH TO EASILY SLIP INTO HOLES IN THE HANDLES EXCEPT FOR SAID PROJECTION, SAID PROJECTION PROVIDING A CUTTING INTERFERENCE BETWEEN A LOCAL PART OF SAID TIE PIN AND ONE OF SAID HANDLES, SAID TIE PIN BEING MADE FROM A MATERIAL WHICH IS HARDER THAN SAID HANDLES, WHEREBY SAID PROJECTION CUTS A SLOT INTO AT LEAST ONE OF SAID HANDLES, SAID PROJECTION BEING SMALL ENOUGH SO THAT THE FORCE REQUIRED TO DRIVE SAID TIE PIN TO ITS FINAL POSITION IS SUBSTANTIALLY FINGER PRESSURE.
Claim 2
Dependent Claim
115 words
IN COMBINATION, SIDE-BY-SIDE CIRCUIT BREAKER HANDLES AND A TIE PIN FOR CONNECTING THE HANDLES, SAID TIE PIN COMPRISING A SHAFT CONNECTING SAID HANDLES, SAID SHAFT HAVING A LOCAL PROJECTION, SAID SHAFT BEING SMALL ENOUGH TO EASILY SLIP INTO HOLES IN THE HANDLES EXCEPT FOR SAID PROJECTION, SAID PROJECTION PROVIDING A CUTTING INTERFERENCE BETWEEN A LOCAL PART OF SAID TIE PIN AND ONE OF SAID HANDLES, SAID TIE PIN BEING MADE FROM A MATERIAL WHICH IS HARDER THAN SAID HANDLES, WHEREBY SAID PROJECTION CUTS A SLOT INTO AT LEAST ONE OF SAID HANDLES, SAID PROJECTION BEING SMALL ENOUGH SO THAT THE FORCE REQUIRED TO DRIVE SAID TIE PIN TO ITS FINAL POSITION IS SUBSTANTIALLY FINGER PRESSURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |