US2998397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing element comprising thermoplastic resin and sintered teflon particles
Assignee: Motors Liquidation Co
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Filing: 1955-05-18
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Granted: 1961-08-29
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Expires: 1975-05-18
Abstract
No abstract record available.
Inventors
- 👤 Ellwood F Riesing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:08
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; B; B29; B29C; B29C45/00; B29C45/0001; B29C70/00; B29C70/58; B29C70/64; B29L; B29L2031/00; B29L2031/04; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936; Y10S277/944; Y10S384/00; Y10S384/90; Y10S384/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A LOW FRACTION BEARING ELEMENTS COMPRISING A THERMOPLASTIC RESIN COMPOSITION INCLUDING POLYTETRAFLUOROETHYLENE IN QUANTITIES OF ABOUT 50% BY WEIGHT OF THE COMPOSITION AND IN THE FORM OF DISCRETE DISPERSED SINTERED PARTICLES HAVING A SIZE OF FROM 1/64 TO 1/32 OF AN INCH DIAMETER DISPERSED IN AND BONDED TOGETHER BY A MATRIX COMPRISING A THERMOPLASTIC RESIN WHICH MAKES UP SUBSTANTIALLY THE REMAINDER OF THE ARTICLE, SAID THERMOPLASTIC RESIN BEING ONE OF A CLASS CONSISTING OF ANY LONG-CHAIN SYNTHETIC FIBERFORMING POLYMERIC CARBONAMIDE WHICH HAS RECURRING CARBONAMIDE GROUPS AS AN INTEGRAL PART OF THE MAIN POLYMER CHAIN, POLYSTYRENE, POLYMETHYL METHACRYLATE, CELLULOSE BUTYRATE AND CELLULOSE NITRATE.
Claim 2
Dependent Claim
102 words
A LOW FRACTION BEARING ELEMENTS COMPRISING A THERMOPLASTIC RESIN COMPOSITION INCLUDING POLYTETRAFLUOROETHYLENE IN QUANTITIES OF ABOUT 50% BY WEIGHT OF THE COMPOSITION AND IN THE FORM OF DISCRETE DISPERSED SINTERED PARTICLES HAVING A SIZE OF FROM 1/64 TO 1/32 OF AN INCH DIAMETER DISPERSED IN AND BONDED TOGETHER BY A MATRIX COMPRISING A THERMOPLASTIC RESIN WHICH MAKES UP SUBSTANTIALLY THE REMAINDER OF THE ARTICLE, SAID THERMOPLASTIC RESIN BEING ONE OF A CLASS CONSISTING OF ANY LONG-CHAIN SYNTHETIC FIBERFORMING POLYMERIC CARBONAMIDE WHICH HAS RECURRING CARBONAMIDE GROUPS AS AN INTEGRAL PART OF THE MAIN POLYMER CHAIN, POLYSTYRENE, POLYMETHYL METHACRYLATE, CELLULOSE BUTYRATE AND CELLULOSE NITRATE.
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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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |