Patent US3324920A successfully refreshed from Google Patents.
US3324920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock nut
Assignee: Russell Burdsall and Ward Corp
•
Filing: 1965-07-06
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Granted: 1967-06-13
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Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 Dudley J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:25
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/284
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A LOCK NUT FOR COOPERATING WTIH CONVENTIONAL THREAD CONVOLUTIONS ON AN EXTERNALLY THREADED STEM COMPRISING A METAL BODY HAVING AN AXIALLY EXTENDING OPENING THERETHROUGH AND AN UNDISTORTED RADIALLY RESILIENT REDUCED ANNULAR PORTION AT ONE END OF SAID OPENING COMPRISING FIRST STANDARD SCREW THREAD CONVOLUTIONS ON SAID BODY EXTENDING INWARDLY FROM THE END OF SAID OPENING REMOTE FROM SAID REDUCED PORTION ADAPTED TO FREELY ENGAGE THE THREAD ON SAID STEM, SAID FIRST THREAD CONVOLUTIONS TERMINATING ADJACENT SAID REDUCED PORTION AND HAVING A UNIFORM ROOT DIAMETER, SAID REDUCED ANNULAR PORTION BEING ADAPTED TO INTERFERE WITH THE THREAD ON SAID STEM AND COMPRISING A PLURALITY OF UNDISTORTED INCOMPLETE THREAD CONVOLUTIONS FORMING AND EXTENDSION OF SAID STANDARD THREAD CONVOLUTIONS AND ADAPTED TO INTERFERE WITH THREADS ON SAID STEM, THE THREAD INTERFERENCE IN SAID REDUCED ANNULAR PORTION RADIALLY EXPANDING SAID REDUCED ANNULAR PORTION WHEN THE NUT IS THREADED ONTO SAID STEM, SAID FIRST AND SECOND THREAD CONVOLUTIONS HAVING THE SAME CREST DIAMETERS AND THE INTERFERENCE OF THE THREADS OF SAID STEM AND SAID REDUCED ANNULAR PORTION EFFECTING A SWAGING OF METAL WHEN APPLIED TO SAID STEM, SAID REDUCED ANNULAR PORTION HAVING RECESSED PORTIONS WHICH ARE IN COMMUNICATION WITH SAID OPENING THERETHROUGH AND WHICH ARE RECESSED TO A RADIAL
Claim 2
Dependent Claim
203 words
A LOCK NUT FOR COOPERATING WTIH CONVENTIONAL THREAD CONVOLUTIONS ON AN EXTERNALLY THREADED STEM COMPRISING A METAL BODY HAVING AN AXIALLY EXTENDING OPENING THERETHROUGH AND AN UNDISTORTED RADIALLY RESILIENT REDUCED ANNULAR PORTION AT ONE END OF SAID OPENING COMPRISING FIRST STANDARD SCREW THREAD CONVOLUTIONS ON SAID BODY EXTENDING INWARDLY FROM THE END OF SAID OPENING REMOTE FROM SAID REDUCED PORTION ADAPTED TO FREELY ENGAGE THE THREAD ON SAID STEM, SAID FIRST THREAD CONVOLUTIONS TERMINATING ADJACENT SAID REDUCED PORTION AND HAVING A UNIFORM ROOT DIAMETER, SAID REDUCED ANNULAR PORTION BEING ADAPTED TO INTERFERE WITH THE THREAD ON SAID STEM AND COMPRISING A PLURALITY OF UNDISTORTED INCOMPLETE THREAD CONVOLUTIONS FORMING AND EXTENDSION OF SAID STANDARD THREAD CONVOLUTIONS AND ADAPTED TO INTERFERE WITH THREADS ON SAID STEM, THE THREAD INTERFERENCE IN SAID REDUCED ANNULAR PORTION RADIALLY EXPANDING SAID REDUCED ANNULAR PORTION WHEN THE NUT IS THREADED ONTO SAID STEM, SAID FIRST AND SECOND THREAD CONVOLUTIONS HAVING THE SAME CREST DIAMETERS AND THE INTERFERENCE OF THE THREADS OF SAID STEM AND SAID REDUCED ANNULAR PORTION EFFECTING A SWAGING OF METAL WHEN APPLIED TO SAID STEM, SAID REDUCED ANNULAR PORTION HAVING RECESSED PORTIONS WHICH ARE IN COMMUNICATION WITH SAID OPENING THERETHROUGH AND WHICH ARE RECESSED TO A RADIAL
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |