Patent US3263728A successfully refreshed from Google Patents.
US3263728A
Expired / Lapsed
US
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Captive bolt
Assignee: Republic Industrial Corp
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Filing: 1964-02-20
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Granted: 1966-08-02
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Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 William R Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:07
CPC Classifications
F; F16; F16B; F16B41/00; F16B41/002; Y; Y10; Y10S; Y10S411/00; Y10S411/999
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A CAPTIVE BOLT SYSTEM, A BOLT HAVING A HEAD AND A THREADED BODY WITH A REDUCED DIAMETER SHANK BETWEEN THE HEAD AND BODY, A WASHER MOVABLY MOUNTED ON SAID SHANK AND HAVING A HOLE OF A DIAMETER LESS THAN SAID THREAD MAJOR DIAMETER, A COIL SPRING ON SAID BOLT OVER SAID THREADED BODY AND HAVING AN END EMBRACING SAID SHANK, SAID EMBRACING END HAVING AN INSIDE DIAMETER GREATER THAN SAID SHANK BUT LESS THAN SAID THREADED BODY, SAID WASHER HAVING A SUFFICIENT DIAMETER TO EMBRACE SAID SPRING, A RETAINER AT THE OTHER END OF SAID SPRING ADJACENT THE FREE END OF SAID THREADED BODY, SAID RETAINER BEING OF ANNULAR CONFIGURATION AND HAVING AN INSIDE DIAMETER TO ALLOW PASSAGE OF SAID BOLT, MEANS ON SAID RETAINER HOLDING SAID RETAINER TO SAID SPRING, AND SAID RETAINER HAVING A TUBULAR SHANK OF AN INSIDE DIAMETER TO ACCOMMODATE SAID BOLT AND AN OUTER CONTOUR TO BE FITTED INTO A RECEIVING APERTURE FOR SAID BOLT.
Claim 2
Dependent Claim
161 words
IN A CAPTIVE BOLT SYSTEM, A BOLT HAVING A HEAD AND A THREADED BODY WITH A REDUCED DIAMETER SHANK BETWEEN THE HEAD AND BODY, A WASHER MOVABLY MOUNTED ON SAID SHANK AND HAVING A HOLE OF A DIAMETER LESS THAN SAID THREAD MAJOR DIAMETER, A COIL SPRING ON SAID BOLT OVER SAID THREADED BODY AND HAVING AN END EMBRACING SAID SHANK, SAID EMBRACING END HAVING AN INSIDE DIAMETER GREATER THAN SAID SHANK BUT LESS THAN SAID THREADED BODY, SAID WASHER HAVING A SUFFICIENT DIAMETER TO EMBRACE SAID SPRING, A RETAINER AT THE OTHER END OF SAID SPRING ADJACENT THE FREE END OF SAID THREADED BODY, SAID RETAINER BEING OF ANNULAR CONFIGURATION AND HAVING AN INSIDE DIAMETER TO ALLOW PASSAGE OF SAID BOLT, MEANS ON SAID RETAINER HOLDING SAID RETAINER TO SAID SPRING, AND SAID RETAINER HAVING A TUBULAR SHANK OF AN INSIDE DIAMETER TO ACCOMMODATE SAID BOLT AND AN OUTER CONTOUR TO BE FITTED INTO A RECEIVING APERTURE FOR SAID BOLT.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |