US3286737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear-resistant article and method of making the same
Assignee: Dowsmith Inc
•
Filing: 1963-08-01
•
Granted: 1966-11-22
•
Expires: 1983-08-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Mark E Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:12
CPC Classifications
F; F16; F16J; F16J10/00; F16J10/02; F16J10/04; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1428; F15B2215/00; F15B2215/30; F15B2215/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A TUBULAR ARTICLE HAVING WEAR RESISTANT PROPERTIES, COMPRISING AN OUTER CYLINDRICAL LAMINATED MEMBER FORMED OF CIRCUMFERENTIALLY DISPOSED SUBSTANTIALLY CONTINUOUS FILAMENTS OF A REINFORCING MATERIAL BONDED TOGETHER WITH A CURED THERMOSETTING RESIN, AND AN INNER MEMBER BONDED TO THE INNER SURFACE OF SAID OUTER LAMINATED MEMBER AND FORMED OF A THERMOSETTING RESIN CONTAINING FINELY DIVIDED PARTICLES OF A LUBRICATING MATERIAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM DISULFIDE, GRAPHITE, TUNGSTEN DISULFIDE, TELLURIUM DISULFIDE, SELENIUM DISULFIDE, TETANIUM DISULFIDE, AND MIXTURES THEREOF, SAID LUBRICATING MATERIAL COMPRISING FROM 2 TO 50% BY WEIGHT OF THE INNER MEMBER.
Claim 2
Dependent Claim
93 words
A TUBULAR ARTICLE HAVING WEAR RESISTANT PROPERTIES, COMPRISING AN OUTER CYLINDRICAL LAMINATED MEMBER FORMED OF CIRCUMFERENTIALLY DISPOSED SUBSTANTIALLY CONTINUOUS FILAMENTS OF A REINFORCING MATERIAL BONDED TOGETHER WITH A CURED THERMOSETTING RESIN, AND AN INNER MEMBER BONDED TO THE INNER SURFACE OF SAID OUTER LAMINATED MEMBER AND FORMED OF A THERMOSETTING RESIN CONTAINING FINELY DIVIDED PARTICLES OF A LUBRICATING MATERIAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM DISULFIDE, GRAPHITE, TUNGSTEN DISULFIDE, TELLURIUM DISULFIDE, SELENIUM DISULFIDE, TETANIUM DISULFIDE, AND MIXTURES THEREOF, SAID LUBRICATING MATERIAL COMPRISING FROM 2 TO 50% BY WEIGHT OF THE INNER MEMBER.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |