Patent US3298273A successfully refreshed from Google Patents.
US3298273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable fastener
Assignee: Individual
•
Filing: 1965-03-17
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Granted: 1967-01-17
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Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 Michael J Mckelvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:27
CPC Classifications
F; F16; F16B; F16B35/00; F16B31/00; F16B31/02; F16B31/021; Y; Y10; Y10S; Y10S411/00; Y10S411/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A RELEASABLE FASTENER ADAPTED TO RELEASE UPON BEING SUBJECTED TO A PREDETERMINED LONGITUDINAL FORCE COMPRISING: (A) A THREADED PORTION HAVING A COAXIAL CYLINDRICAL BORE; (B) A HEAD PORTION HAVING AN EXTENDED CYLINDRICAL CONNECTING PORTION ADAPTED TO BE RECEIVED WITHIN AND EXTEND COMPLETELY THROUGH SAID THREADED PORTION CYLINDRICAL BORE AND HAVING AN END PORTION DEFORMABLE TO LOCK SAID HEAD PORTION TO SAID THREADED PORTION TO THEREBY MAINTAIN ASSEMBLY OF SAID FASTENER; (C) MEANS ON SAID HEAD PORTION AND SAID THREADED PORTION TO PREVENT RELATIVE ROTATION BETWEEN SAID HEAD PORTION AND SAID THREADED PORTION WHEN SAID HEAD PORTION AND SAID THREADED PORTION ARE LOCKED TO EACH OTHER BY SAID CONNECTING PORTION SAID MEANS INCLUDING MATING PLANAR SURFACES LYING IN PLANES PARALLEL TO THE AXIS OF SAID FASTENER AND LATERALLY OFFSET THEREFROM; (D) SAID CONNECTING PORTION BEING SO PROPORTIONED THAT SAID THREADED PORTION IS RELEASED LONGITUDINALLY FROM SAID HEAD PORTION WHEN SAID FASTENER IS SUBJECTED TO A LONGITUDINAL FORCE IN EXCESS OF A PREDETERMINED FORCE.
Claim 2
Dependent Claim
162 words
A RELEASABLE FASTENER ADAPTED TO RELEASE UPON BEING SUBJECTED TO A PREDETERMINED LONGITUDINAL FORCE COMPRISING: (A) A THREADED PORTION HAVING A COAXIAL CYLINDRICAL BORE; (B) A HEAD PORTION HAVING AN EXTENDED CYLINDRICAL CONNECTING PORTION ADAPTED TO BE RECEIVED WITHIN AND EXTEND COMPLETELY THROUGH SAID THREADED PORTION CYLINDRICAL BORE AND HAVING AN END PORTION DEFORMABLE TO LOCK SAID HEAD PORTION TO SAID THREADED PORTION TO THEREBY MAINTAIN ASSEMBLY OF SAID FASTENER; (C) MEANS ON SAID HEAD PORTION AND SAID THREADED PORTION TO PREVENT RELATIVE ROTATION BETWEEN SAID HEAD PORTION AND SAID THREADED PORTION WHEN SAID HEAD PORTION AND SAID THREADED PORTION ARE LOCKED TO EACH OTHER BY SAID CONNECTING PORTION SAID MEANS INCLUDING MATING PLANAR SURFACES LYING IN PLANES PARALLEL TO THE AXIS OF SAID FASTENER AND LATERALLY OFFSET THEREFROM; (D) SAID CONNECTING PORTION BEING SO PROPORTIONED THAT SAID THREADED PORTION IS RELEASED LONGITUDINALLY FROM SAID HEAD PORTION WHEN SAID FASTENER IS SUBJECTED TO A LONGITUDINAL FORCE IN EXCESS OF A PREDETERMINED FORCE.
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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) | 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 |