Patent US3174385A successfully refreshed from Google Patents.
US3174385A
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US
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Assignee: SPS Technologies LLC
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Filing: 1962-12-04
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Granted: 1965-03-23
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Expires: 1982-12-04
Abstract
No abstract record available.
Inventors
- 👤 H Thomas Hallowell Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:08
CPC Classifications
F; F16; F16B; F16B31/00; F16B31/02; F16B31/021; F16B39/00; F16B39/22; F16B39/28; F16B39/284; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A NUT HAVING A BODY PORTION AND AN END PORTION ADAPTED TO BE SEPARATED FROM THE BODY PORTION AT PREDETERMINED TORQUE VALUES, SAID BODY HAVING AN AXIAL BORE, PORTIONS OF THE BORE WITHIN THE BODY BEING PROVIDED WITH INTERNAL THREADS, THE TWIST-OFF END PORTION BEING UNTHREADED AND PROVIDED WITH DRIVING SURFACES AND HAVING AN AREA OF REDUCED WALL THICKNESS DEFINING AN INTERNAL CIRCUMFERENTIAL GROOVE IN THE BORE ADJACENT SAID BODY PORTION WHICH GROOVE FORMS A SHEAR PLANE AT THE POINT WHERE THE BODY AND END PORTIONS ARE TO BE SEPARATED, SAID NUT FURTHER HAVING AN EXTERNAL CIRCUMFERENTIAL GROOVE IN THE PORTION OF THE BODY WHICH IS THREADED, THE THREADS IN THE ZONE GENERALLY SUBSTENDED BY THE EXTERNAL GROOVE BEING DISTORTED INWARDLY OF SAID BORE TO A NON-CIRCULAR CONFIGURATION, AND WHEREIN SAID EXTERNAL GROOVE AND SAID INTERNAL GROOVE ARE AXIALLY SEPARATED BY A PORTION OF SAID BODY WHICH EXTENDS FROM SAID BORE TO A DISTANCE RADIALLY BEYOND THE BOTTOM OF EACH OF SAID GROOVES TO THEREBY PROVIDE SUFFICIENT MATERIAL TO PRESENT DISTORTION OF THE WALLS IN THE VICINITY OF THE SHEAR GROOVE UPON DISTORTING THE THREADS IN THE LOCKING GROOVE.
Claim 2
Dependent Claim
189 words
A NUT HAVING A BODY PORTION AND AN END PORTION ADAPTED TO BE SEPARATED FROM THE BODY PORTION AT PREDETERMINED TORQUE VALUES, SAID BODY HAVING AN AXIAL BORE, PORTIONS OF THE BORE WITHIN THE BODY BEING PROVIDED WITH INTERNAL THREADS, THE TWIST-OFF END PORTION BEING UNTHREADED AND PROVIDED WITH DRIVING SURFACES AND HAVING AN AREA OF REDUCED WALL THICKNESS DEFINING AN INTERNAL CIRCUMFERENTIAL GROOVE IN THE BORE ADJACENT SAID BODY PORTION WHICH GROOVE FORMS A SHEAR PLANE AT THE POINT WHERE THE BODY AND END PORTIONS ARE TO BE SEPARATED, SAID NUT FURTHER HAVING AN EXTERNAL CIRCUMFERENTIAL GROOVE IN THE PORTION OF THE BODY WHICH IS THREADED, THE THREADS IN THE ZONE GENERALLY SUBSTENDED BY THE EXTERNAL GROOVE BEING DISTORTED INWARDLY OF SAID BORE TO A NON-CIRCULAR CONFIGURATION, AND WHEREIN SAID EXTERNAL GROOVE AND SAID INTERNAL GROOVE ARE AXIALLY SEPARATED BY A PORTION OF SAID BODY WHICH EXTENDS FROM SAID BORE TO A DISTANCE RADIALLY BEYOND THE BOTTOM OF EACH OF SAID GROOVES TO THEREBY PROVIDE SUFFICIENT MATERIAL TO PRESENT DISTORTION OF THE WALLS IN THE VICINITY OF THE SHEAR GROOVE UPON DISTORTING THE THREADS IN THE LOCKING GROOVE.
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |