Patent US3309955A successfully refreshed from Google Patents.
US3309955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener with rotatably engaged head
Assignee: Illinois Tool Works Inc
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Filing: 1964-10-13
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Granted: 1967-03-21
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Expires: 1984-10-13
Abstract
No abstract record available.
Inventors
- 👤 Albert E Turnbull
- 👤 Mcdonald George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:25
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; F16B21/08; F16B21/086; F16B21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
AN INTEGRAL, ONE PIECE, PLASTIC FASTENER ADAPTED TO CONNECT A COMPLEMENTARY PANEL MEMBER TO A SUPPORT MEMBER IN SPACED RELATION THERETO, SAID COMPLEMENTARY PANEL MEMBER HAVING AN UNINTERRUPTED CIRCULAR APERTURE OF PREDETERMINED DIAMETER AND SAID SUPPORT MEMBER HAVING AN APERTURE TO BE PLACED IN ALIGNMENT WITH SAID CIRCULAR APERTURE, SAID FASTENER INCLUDING A SHANK WITH A SUBSTANTIALLY CIRCULAR HEAD AT ONE END THEREOF, SAID SHANK HAVING A RESILIENT FIRST PORTION AT THE END OPPOSITE THE HEAD ADAPTED TO BE ACCEPTED WITHIN THE SUPPORT MEMBER APERTURE AND A SOLID SECOND PORTION INTEGRAL WITH THE CENTRAL PORTION OF SAID HEAD, SAID SECOND PORTION ADAPTED TO FILL A SUBSTANTIAL PORTION OF SAID PANEL APERTURE, A CONTINUOUS RESILIENT DISHED FLANGE EXTENDING OUTWARDLY FROM SAID SHANK SUBSTANTIALLY AT THE JUNCTURE OF SAID FIRST AND SECOND PORTIONS AND THENCE DOWNWARDLY TOWARD SAID FIRST PORTION, SAID HEAD BEING SUBSTANTIALLY PLANAR AND CIRCULAR IN CONFIGURATION AND EXTENDING LATERALLY FROM SAID SECOND PORTION, THE DIAMETRAL EXTENT OF SAID HEAD BEING SUBSTANTIALLY
Claim 2
Dependent Claim
162 words
AN INTEGRAL, ONE PIECE, PLASTIC FASTENER ADAPTED TO CONNECT A COMPLEMENTARY PANEL MEMBER TO A SUPPORT MEMBER IN SPACED RELATION THERETO, SAID COMPLEMENTARY PANEL MEMBER HAVING AN UNINTERRUPTED CIRCULAR APERTURE OF PREDETERMINED DIAMETER AND SAID SUPPORT MEMBER HAVING AN APERTURE TO BE PLACED IN ALIGNMENT WITH SAID CIRCULAR APERTURE, SAID FASTENER INCLUDING A SHANK WITH A SUBSTANTIALLY CIRCULAR HEAD AT ONE END THEREOF, SAID SHANK HAVING A RESILIENT FIRST PORTION AT THE END OPPOSITE THE HEAD ADAPTED TO BE ACCEPTED WITHIN THE SUPPORT MEMBER APERTURE AND A SOLID SECOND PORTION INTEGRAL WITH THE CENTRAL PORTION OF SAID HEAD, SAID SECOND PORTION ADAPTED TO FILL A SUBSTANTIAL PORTION OF SAID PANEL APERTURE, A CONTINUOUS RESILIENT DISHED FLANGE EXTENDING OUTWARDLY FROM SAID SHANK SUBSTANTIALLY AT THE JUNCTURE OF SAID FIRST AND SECOND PORTIONS AND THENCE DOWNWARDLY TOWARD SAID FIRST PORTION, SAID HEAD BEING SUBSTANTIALLY PLANAR AND CIRCULAR IN CONFIGURATION AND EXTENDING LATERALLY FROM SAID SECOND PORTION, THE DIAMETRAL EXTENT OF SAID HEAD BEING SUBSTANTIALLY
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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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |