US3552815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lined bearing
Assignee: ZF Friedrichshafen AG
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Filing: 1968-09-13
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Granted: 1971-01-05
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Expires: 1988-09-13
Abstract
Abstract A METALLIC SLEEVE BEARING IS PROVIDED WITH AN INTERNAL LINER CONSISTING OF CIRCUMRERENTIALLY SPACED, THIN, PLASTIC PLATE SEGMENTS EACH HAVING AN OUTER RIB CONFORMINGLY RECEIVED IN A DOVETAIL GROOVE OF THE SLEEVE SURFACE, THE GROOVE BEING OPEN IN ONE AXIAL DIRECTION AND FLARING TOWARD THE OPEN END. THE RADIUS OF CURVATURE OF EACH SEGMENT IS SUFFICIENTLY GREATER THAN THAT OF THE SLEEVE SURFACE TO CAUSE THE CIRCUMFERENTIALLY TERMINAL EDGE PORTIONS OF THE SEGMENTS TO BE PRESSED AGAINST THE SLEEVE SURFACE BY THE RESILIENCY OF THE SEGMENT, AND THE RIB TO BE LOCKED IN THE ASSOCIATED GROOVE.
Inventors
- 👤 Josef Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:23
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C17/00; F16C17/02; F16C17/03; F16C2208/00; F16C2208/20; F16C2208/30; F16C2208/32; F16C2208/60; F16C2208/80; F16C2208/90; F16C2220/00; F16C2220/02; F16C2220/04
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |