Patent US3561829A successfully refreshed from Google Patents.
US3561829A
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US
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Means for maintaining the clearance in rolling bearings
Assignee: SKF AB
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Filing: 1968-12-06
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Granted: 1971-02-09
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Expires: 1988-12-06
Abstract
Abstract A DEVICE FOR MAINTAINING THE CLEARANCE IN ROLLING BEARINGS SUBJECTED TO VARYING TEMPERATURES CONTAINS AT LEAST TWO ANNULAR MEMBERS MADE OF MATERIALS HAVING DIFFERENT HEAT EXPANSION COEFFICIENTS. THESE MEMBERS ENGAGE EACH OTHER ALONG A CONCIAL SURFACE AND DUE TO THE DIFFERENT EXPANSIONS OF THE MEMBERS THE BREADTH OF THE PAIR OF MEMBERS WILL VARY AS THE TEMPERATURE CHANGES. ONE OF THE MEMBERS ABUTS AGAINST A RING OF THE BEARING, AND THE OTHER MEMBERS ABUTS AGAINST A SUPPORT, WHICH MAY BE REGARDED AS FIXED IN RELATION TO THE RING, THUS PERMITTING COMPENSATION MOVEMENTS TO TAKE PLACE.
Inventors
- 👤 Karl Helge Konstantin Heldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:24
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/22; F16C19/24; F16C19/28; F16C19/52; F16C19/525; F16C19/54; F16C19/546; F16C19/547; F16C25/00; F16C25/06; F16C25/08; F16C19/34; F16C19/36; F16C19/364; F16C2300/00; F16C2300/02
Claims Analysis
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |