US3329554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric bearing material
Assignee: MARINE MIDLAND BANK NA
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Filing: 1962-07-24
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Granted: 1967-07-04
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Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Harold G Hencken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:42
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/3724; Y10T442/3756
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
A FABRIC MATERIAL FOR A BEARING COMPRISING IN COMBINATION, A LAYER OF BASE WOVEN FABRIC MATERIAL; AND A CARDED BATT ON AT LEAST ONE SURFACE OF SAID BASE MATERIAL, SAID BATT COMPRISING A MIXTURE OF ABOUT 60 TO 80 PERCENT OF POLYTETRAFLUOROETHYLENE FIBERS WITH AT LEAST 3 OUNCES PER SQUARE YARD THEREOF AND 20 TO 40 PERCENT OF RETRACTABLE POLYPROPYLENE FIBERS, SAID BATT HAVING A PLURALITY OF FIBERS PROJECTING TRANSVERSELY THROUGH THE CARDED BATT AND THE WOVEN FIBERS LAYER, SAID FIBERS BEING RANDOMLY DISPOSED RELATIVE TO THE FLAT SURFACE OF SAID BATT, AND SAID POLYTETRAFLUORIETHYLENE FIBERS BEING BONDED TO SAID BASE MATERIAL, SAID POLYPROPYLENE FIBERS BEING COALESCED TO THE BASE MATERIAL AND ALSO BEING IN RETRACTED POSITION SO AS TO LEAVE PRIMARILY THE POLYTETRAFLUOROETHYLENE FIBERS EXPOSED THEREON.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |