Patent US3718957A successfully refreshed from Google Patents.
US3718957A
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Method of securing a threaded element in a high centrifugal force field
Assignee: Avco Corp
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Filing: 1970-09-03
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Granted: 1973-03-06
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Expires: 1990-09-03
Abstract
Abstract A METHOD FOR SECURING A THREADED ELEMENT ON A SHAFT COMPRISING THE STEPS OF MACHINING THE THREADS ON THE ELEMENT TO A PREDETERMINED INTERFERENCE FIT WITH THE SHAFT ON WHICH IT WILL BE SECURED. THE NUT IS HEATED TO ENABLE THREADING ONTO THE SHAFT. THE PREDETERMINED INTERFERENCE FIT IS SELECTED SO THAT WHEN THE ELEMENT IS COOLED AN INTERNAL HOOP STRESS IS GENERATED THAT IS SUFFCIENTLY LARGE TO PREVENT LOOSENING BY CIRCUMFERENTIAL ENLARGEMENT OF THE ELEMENT IN A HIGH CENTRIFUGAL FORCE FIELD.
Inventors
- 👤 W Shank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
F; F16; F16B; F16B4/00; F16B4/006; B; B21; B21K; B21K25/00; F01; F01D; F01D5/00; F01D5/02; F01D5/04; F01D5/043; F01D5/045; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/284; F04D29/285; F16B39/00; F16B39/02; F16D; F16D1/00; F16D1/06; F05; F05D; F05D2250/00; F05D2250/20; F05D2250/28; F05D2250/281; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49329; Y10T29/49758; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |