Patent US5703940A successfully refreshed from Google Patents.
US3203302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking sheet metal nut
Assignee: Individual
•
Filing: 1963-09-12
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Granted: 1965-08-31
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Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:40
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/02; F16B37/08; F16B37/0807; F16B37/0842; Y; Y10; Y10S; Y10S411/00; Y10S411/918; Y10S411/924; Y10S411/926; Y10S411/928; Y10S411/929; Y10S411/943; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T29/49947; Y10T29/49948
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A SELF-LOCKING NUT COMPRISING (A) A SHEET OF TEMPERED SPRING STEEEL HAVING AN APERTURE CENTERED THEREIN FOR RECEIVING THE SHANK OF A BOLT OR STUD TO SECURE A WORKPIECE THERETO, (B) SAID SHEET BEING PREFORMED WITH AN ARCUATE SHAPE HAVING A CURVILINEAR CROSS-SECTION, (C) SAID APERTURE HAVING OPPOSED PERIPHERAL PORTIONS THEREOF BENT OUT OF THE PLANE AND INCLINED TO THE CONVEX SIDE OF SAID PREFORMED SHAPE TO DEFINE GRIPPERS FOR ENGAGING THE SHANK OF THE BOLT OR STUD FITTED THROUGH SAID APERTURE, (D) SAID APERTURE HAVING OTHER PORTIONS OF ITS PERIPHERY BENT OUT OF THE PLANE AND PROJECTED TO THE CONCAVE SIDE OF SAID PREFORMED SHAPE TO DEFINE SPACERS FOR SPACING THE SHEET FROM THE WORKPIECE, (E) AND SAID SHAPE BEING TURNED INSIDE OUT PRIOR TO RECEIVING THE SHANK OF SAID BOLT OR STUD SO THAT SAID SHAPE CAN BE SPRUNG BACK TO ITS INITIAL PREFORMED POSITION WHEN SAID SPACERS ARE POSITIONED AGAINST THE WORKPIECE TO BRING THE MARGINAL PORTIONS OF THE SHEET INTO ENGAGEMENT WITH THE WORKPIECE WHEREBY THE SAME IS LOCKED ONTO THE SHANK OF THE STUD OR BOLT.
Claim 2
Dependent Claim
181 words
A SELF-LOCKING NUT COMPRISING (A) A SHEET OF TEMPERED SPRING STEEEL HAVING AN APERTURE CENTERED THEREIN FOR RECEIVING THE SHANK OF A BOLT OR STUD TO SECURE A WORKPIECE THERETO, (B) SAID SHEET BEING PREFORMED WITH AN ARCUATE SHAPE HAVING A CURVILINEAR CROSS-SECTION, (C) SAID APERTURE HAVING OPPOSED PERIPHERAL PORTIONS THEREOF BENT OUT OF THE PLANE AND INCLINED TO THE CONVEX SIDE OF SAID PREFORMED SHAPE TO DEFINE GRIPPERS FOR ENGAGING THE SHANK OF THE BOLT OR STUD FITTED THROUGH SAID APERTURE, (D) SAID APERTURE HAVING OTHER PORTIONS OF ITS PERIPHERY BENT OUT OF THE PLANE AND PROJECTED TO THE CONCAVE SIDE OF SAID PREFORMED SHAPE TO DEFINE SPACERS FOR SPACING THE SHEET FROM THE WORKPIECE, (E) AND SAID SHAPE BEING TURNED INSIDE OUT PRIOR TO RECEIVING THE SHANK OF SAID BOLT OR STUD SO THAT SAID SHAPE CAN BE SPRUNG BACK TO ITS INITIAL PREFORMED POSITION WHEN SAID SPACERS ARE POSITIONED AGAINST THE WORKPIECE TO BRING THE MARGINAL PORTIONS OF THE SHEET INTO ENGAGEMENT WITH THE WORKPIECE WHEREBY THE SAME IS LOCKED ONTO THE SHANK OF THE STUD OR 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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |