US3189075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration resistant bolt fastener
Assignee: AT&T Inc
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Filing: 1963-08-06
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Granted: 1965-06-15
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Expires: 1983-08-06
Abstract
No abstract record available.
Inventors
- 👤 Garland R Jobe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:48
CPC Classifications
F; F16; F16B; F16B35/00; F16B35/04; F16B35/041; F16B37/00; F16B37/08; F16B37/0807; F16B39/00; F16B39/22; F16B39/28; F16B39/34; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947; Y10S411/948
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A VIBRATION RESISTANT BOLT FASTENER COMPRISING A BOLT HAVING A THREADED SHAFT TO FIT THE THREAD IN A NUT, A PORTION OF THE THREADS REMOVED FROM ONE SIDE OF THE BOLT SHAFT TO FORM A SMOOTH CONVEXLY CURVED SURFACE AND A MAXIMUM CROSS SECTION DIMENSION LESS THAN THE INTERNAL DIAMETER OF THE NUT THREAD SO THAT THE SHAFT MAY SLIDABLY RECEIVE SAID NUT WITHOUT RELATIVE ROTARY MOTION OF THE NUT ABOUT THE SHAFT, A FRICTION INSERT OF MATERIAL SOFTER THAN SAID NUT FOR PLACEMENT BETWEEN SAID SHAFT AND SAID NUT, SAID INSERT HAVING A CONCAVE INNER SURFACE COMPLEMENTARY TO SAID SMOOTH CONVEXLY CURVED SURFACE AND AN OPPOSING CONVEX OUTER SURFACE, THE THICKNESS BETWEEN SAID CONCAVE AND CONVEX SURFACES GRADUALLY INCREASING FROM ONE END OF THE INSERT TO ITS OPPOSITE END SO AS TO INCREASE THE FRICTION BETWEEN THE INSERT AND THE THREADS OF SAID NUT AS THE NUT IS TURNED TO TIGHTNESS ON THE BOLT SHAFT, AND MEANS ON SAID INSERT PREVENTING ITS ROTATION ABOUT SAID SHAFT AS SAID NUT IS TURNED THEREON.
Claim 2
Dependent Claim
173 words
A VIBRATION RESISTANT BOLT FASTENER COMPRISING A BOLT HAVING A THREADED SHAFT TO FIT THE THREAD IN A NUT, A PORTION OF THE THREADS REMOVED FROM ONE SIDE OF THE BOLT SHAFT TO FORM A SMOOTH CONVEXLY CURVED SURFACE AND A MAXIMUM CROSS SECTION DIMENSION LESS THAN THE INTERNAL DIAMETER OF THE NUT THREAD SO THAT THE SHAFT MAY SLIDABLY RECEIVE SAID NUT WITHOUT RELATIVE ROTARY MOTION OF THE NUT ABOUT THE SHAFT, A FRICTION INSERT OF MATERIAL SOFTER THAN SAID NUT FOR PLACEMENT BETWEEN SAID SHAFT AND SAID NUT, SAID INSERT HAVING A CONCAVE INNER SURFACE COMPLEMENTARY TO SAID SMOOTH CONVEXLY CURVED SURFACE AND AN OPPOSING CONVEX OUTER SURFACE, THE THICKNESS BETWEEN SAID CONCAVE AND CONVEX SURFACES GRADUALLY INCREASING FROM ONE END OF THE INSERT TO ITS OPPOSITE END SO AS TO INCREASE THE FRICTION BETWEEN THE INSERT AND THE THREADS OF SAID NUT AS THE NUT IS TURNED TO TIGHTNESS ON THE BOLT SHAFT, AND MEANS ON SAID INSERT PREVENTING ITS ROTATION ABOUT SAID SHAFT AS SAID NUT IS TURNED THEREON.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |