Patent US3178905A successfully refreshed from Google Patents.
US3178905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sink
Assignee: Lockheed Martin Corp
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Filing: 1962-10-15
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Granted: 1965-04-20
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 George V Boynton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:13
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/08; B23K3/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A HEAT SINK COMPRISING; A HOLLOW TUBULAR MEMBER, SAID HOLLOW TUBULAR MEMBER PROVIDED WITH AN OUTWARDLY EXTENDING PORTION AT ONE END AND A TAPERED END PORTION AT THE OTHER END; A SPRING, A FIRST END OF SAID SPRING SEATED IN THE OUTWARDLY EXTENDING PORTION OF SAID TUBULAR MEMBER, AN ELONGATED WIRE EXTENDING FROM THE SECOND END OF SAID SPRING, THE ELONGATED WIRE BEING BENT AT A POINT ADJACENT TO THE SECOND END OF SAID SPRING AND EXTENDING THROUGH SAID SPRING AND HOLLOW TUBULAR MEMBER, A PORTION OF SAID WIRE EXTENDING BEYOND THE TAPERED END OF SAID HOLLOW TUBULAR MEMBER BEING BENT AT AN ANGLE TO MAINTAIN COMPRESSION BIAS ON SAID SPRING MEMBER.
Claim 2
Dependent Claim
112 words
A HEAT SINK COMPRISING; A HOLLOW TUBULAR MEMBER, SAID HOLLOW TUBULAR MEMBER PROVIDED WITH AN OUTWARDLY EXTENDING PORTION AT ONE END AND A TAPERED END PORTION AT THE OTHER END; A SPRING, A FIRST END OF SAID SPRING SEATED IN THE OUTWARDLY EXTENDING PORTION OF SAID TUBULAR MEMBER, AN ELONGATED WIRE EXTENDING FROM THE SECOND END OF SAID SPRING, THE ELONGATED WIRE BEING BENT AT A POINT ADJACENT TO THE SECOND END OF SAID SPRING AND EXTENDING THROUGH SAID SPRING AND HOLLOW TUBULAR MEMBER, A PORTION OF SAID WIRE EXTENDING BEYOND THE TAPERED END OF SAID HOLLOW TUBULAR MEMBER BEING BENT AT AN ANGLE TO MAINTAIN COMPRESSION BIAS ON SAID SPRING MEMBER.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |