US3277942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock nuts having reduced single hexagon wrenching surfaces
Assignee: Elastic Stop Nut Corp
•
Filing: 1963-07-16
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Granted: 1966-10-11
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Expires: 1983-07-16
Abstract
No abstract record available.
Inventors
- 👤 Dwyer Marion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:45
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/284; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A ONE-PIECE METAL LIGHTWEIGHT LOCK NUT OF A NOMINAL THREAD SIZE NOT LARGER THAN 3/8 INCH AND HAVING AN IMPERFORATE EXTERNAL WRENCHING SURFACE OF SINGLE HEXAGON FORM AND OF A PREDETERMINED RADIAL ACROSS-THE-FLATS DIMENSION OF A NOMINAL SIZE (A) AT LEAST 3/3I INCH LESS THAN THE NOMINAL ACROSS-THE-FLATS SIZE OF THE HEXAGON WRENCHING SURFACE OF A SINGLE HEXAGON NUT OF MINIMUM STANDARD ACROSS-THE-FLATS DIMENSION FOR THE SAME NOMINAL THREAD SIZE, AND (B) LARGE ENOUGH TO PROVIDE A MINIMUM WALL THICKNESS SUFFICIENT TO PROVIDE THE DESIRED AXIAL STRENGTH, AND SAID WRENCHING SURFACE HAVING RADIALLY INWARDLY ELASTICALLY DEFORMED LOCKING THREAD PORTIONS AT ONE END OF THE NUT, AND AN INTEGRAL CYLINDRICAL FLANGE AT THE OTHER END OF THE NUT OF A DIAMETER GREATER THAN THE ACROSS-THECORNERS DIMENSION OF THE WRENCHING SURFACE.
Claim 2
Dependent Claim
129 words
A ONE-PIECE METAL LIGHTWEIGHT LOCK NUT OF A NOMINAL THREAD SIZE NOT LARGER THAN 3/8 INCH AND HAVING AN IMPERFORATE EXTERNAL WRENCHING SURFACE OF SINGLE HEXAGON FORM AND OF A PREDETERMINED RADIAL ACROSS-THE-FLATS DIMENSION OF A NOMINAL SIZE (A) AT LEAST 3/3I INCH LESS THAN THE NOMINAL ACROSS-THE-FLATS SIZE OF THE HEXAGON WRENCHING SURFACE OF A SINGLE HEXAGON NUT OF MINIMUM STANDARD ACROSS-THE-FLATS DIMENSION FOR THE SAME NOMINAL THREAD SIZE, AND (B) LARGE ENOUGH TO PROVIDE A MINIMUM WALL THICKNESS SUFFICIENT TO PROVIDE THE DESIRED AXIAL STRENGTH, AND SAID WRENCHING SURFACE HAVING RADIALLY INWARDLY ELASTICALLY DEFORMED LOCKING THREAD PORTIONS AT ONE END OF THE NUT, AND AN INTEGRAL CYLINDRICAL FLANGE AT THE OTHER END OF THE NUT OF A DIAMETER GREATER THAN THE ACROSS-THECORNERS DIMENSION OF THE WRENCHING SURFACE.
References Cited (Backward Citations)
US2440944A
Cited
US2452192A
Cited
US2588372A
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US2679879A
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US2897867A
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US3062252A
Cited
US3079830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |