US3131979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic bearing
Assignee: Individual
•
Filing: 1962-01-02
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Granted: 1964-05-05
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Shobert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:24
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A HOLLOW REINFORCED PLASTIC BEARING COMPRISING A TUBULAR ELEMENT OF SELF-SUPPORTING, HARDENED AND CURED RESIN, SAID ELEMENT HAVING INNER AND OUTER PERIPHERAL SURFACES, INNER AND OUTER COAXIAL TUBULAR LAMINATIONS IMBEDDED WITHIN SAID ELEMENT, SAID INNER LAMINATION COMPRISING A SINGLE LAYER OF HELICALLY BRAIDED TETRAFLUOROETHYLENE-COTTON THREADS, A FIRST PORTION OF SAID THREADS EXTENDING IN THE FORM OF A HELIX IN ONE CIRCUMFERENTIAL DIRECTION AND A SECOND PORTION OF SAID THREADS EXTENDING IN THE FORM OF A HELIX IN THE OPPOSITE CIRCUMFERENTIAL DIRECTION ALTERNATELY OVER AND UNDER THE FIRST PORTION THREADS, SAID THREADS BEING EXPOSED ON ONE SIDE TO PROVIDE SAID INNER PERIPHERAL
Claim 2
Dependent Claim
101 words
A HOLLOW REINFORCED PLASTIC BEARING COMPRISING A TUBULAR ELEMENT OF SELF-SUPPORTING, HARDENED AND CURED RESIN, SAID ELEMENT HAVING INNER AND OUTER PERIPHERAL SURFACES, INNER AND OUTER COAXIAL TUBULAR LAMINATIONS IMBEDDED WITHIN SAID ELEMENT, SAID INNER LAMINATION COMPRISING A SINGLE LAYER OF HELICALLY BRAIDED TETRAFLUOROETHYLENE-COTTON THREADS, A FIRST PORTION OF SAID THREADS EXTENDING IN THE FORM OF A HELIX IN ONE CIRCUMFERENTIAL DIRECTION AND A SECOND PORTION OF SAID THREADS EXTENDING IN THE FORM OF A HELIX IN THE OPPOSITE CIRCUMFERENTIAL DIRECTION ALTERNATELY OVER AND UNDER THE FIRST PORTION THREADS, SAID THREADS BEING EXPOSED ON ONE SIDE TO PROVIDE SAID INNER PERIPHERAL
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |