US3332464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock-washers
Assignee: NOUVEAUTES MECANIQUES ELECTRIQUES NOMEL
•
Filing: 1965-04-26
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Granted: 1967-07-25
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Expires: 1985-04-26
Abstract
No abstract record available.
Inventors
- 👤 Gerard Antoine Louis Castel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:35
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/24; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/957; Y10S411/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A CONVEX SPRING WASHER FOR LOCKING A THREADED FASTENER HAVING A FLAT CLAMPING FACE, COMPRISING A GENERALLY ANNULAR AND CURVED SOLID BODY OF SPRING METAL HAVING PLAIN INNER AND OUTER PERIPHERIES, SAID INNER PERIPHERY DEFINING A CIRCULAR CENTRAL HOLD, SAID OUTER PERIPHERY HAVING IN PLAN A CONTINUOUSLY CONVEX OUTLINE RADIALLY SPACED OUTWARDS FROM THE CONTOUR OF SAID CLAMPING FACE OF SAID FASTENER; SAID BODY BEING FORMED WITH A SUBSTANTIALLY FLAT, FRUSTO-CONICAL RADIALLY INNER PORTION SURROUNDING SAID CENTRAL HOLE, SAID RADIALLY INNER PORTION BEING SEPARATED FROM THE RADIALLY OUTER PORTION OF SAID BODY BY STRUCTURAL DISCONTINUITY IN THE CURVATURE OF THE LATTER ALONG A CIRCUMFERENCE, THE INTERSECTION OF SAID RADIALLY INNER AND RADIALLY OUTER PORTIONS ALONG SAID CIRCUMFERENCE DEFINING SUBSTANTIALLY AN OBTUSE ANGLE OF LESS THAN 180* AT THE INNER SURFACE OF SAID WASHER, SAID RADIALLY INNER PORTION BEING FORMED WITH A PLURALITY OF SERRATIONS RUNNING SUBSTANTIALLY RADIALLY ON ITS OUTER OR CONVEX FACE, SAID SERRATIONS BEING ADAPTED TO BITE IN SAID CLAMPING FACE OF SAID FASTENER.
Claim 2
Dependent Claim
166 words
A CONVEX SPRING WASHER FOR LOCKING A THREADED FASTENER HAVING A FLAT CLAMPING FACE, COMPRISING A GENERALLY ANNULAR AND CURVED SOLID BODY OF SPRING METAL HAVING PLAIN INNER AND OUTER PERIPHERIES, SAID INNER PERIPHERY DEFINING A CIRCULAR CENTRAL HOLD, SAID OUTER PERIPHERY HAVING IN PLAN A CONTINUOUSLY CONVEX OUTLINE RADIALLY SPACED OUTWARDS FROM THE CONTOUR OF SAID CLAMPING FACE OF SAID FASTENER; SAID BODY BEING FORMED WITH A SUBSTANTIALLY FLAT, FRUSTO-CONICAL RADIALLY INNER PORTION SURROUNDING SAID CENTRAL HOLE, SAID RADIALLY INNER PORTION BEING SEPARATED FROM THE RADIALLY OUTER PORTION OF SAID BODY BY STRUCTURAL DISCONTINUITY IN THE CURVATURE OF THE LATTER ALONG A CIRCUMFERENCE, THE INTERSECTION OF SAID RADIALLY INNER AND RADIALLY OUTER PORTIONS ALONG SAID CIRCUMFERENCE DEFINING SUBSTANTIALLY AN OBTUSE ANGLE OF LESS THAN 180* AT THE INNER SURFACE OF SAID WASHER, SAID RADIALLY INNER PORTION BEING FORMED WITH A PLURALITY OF SERRATIONS RUNNING SUBSTANTIALLY RADIALLY ON ITS OUTER OR CONVEX FACE, SAID SERRATIONS BEING ADAPTED TO BITE IN SAID CLAMPING FACE OF SAID FASTENER.
References Cited (Backward Citations)
FR638577A
Cited
US1911384A
Cited
US1896650A
Cited
GB559578A
Cited
US2518399A
Cited
FR1138521A
Cited
US2794476A
Cited
US3077218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |