US3214271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making friction bodies
Assignee: Borg Warner Corp
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Filing: 1963-03-27
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Granted: 1965-10-26
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Expires: 1983-03-27
Abstract
No abstract record available.
Inventors
- 👤 Robert W Halberg
- 👤 Rober S Hutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:35
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/10; C22C1/1078
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE METHOD OF MAKING FRICTION BODIES OF OXIDEIZED SINTERED POWDERS OF BRONZE; THE STEPS OF FORMING A BODY OF SAID POWDERED BRONZE THEN HEATING SAID BODY IN AN OXIDIZING ATMOSPHERE TO FORM AN OXIDIZED FILM ON ITS SURFACE AND COINING SAID BODY IN A DIE TO THEREBY CAUSE PENETRATION OF SAID OXIDE FILM AND TO THEREBY ALSO FORM SAID BODY TO A PREDETERMINED SIZE.
Claim 2
Independent Claim
64 words
THE METHOD OF MAKING FRICTION BODIES OF OXIDEIZED SINTERED POWDERS OF BRONZE; THE STEPS OF FORMING A BODY OF SAID POWDERED BRONZE THEN HEATING SAID BODY IN AN OXIDIZING ATMOSPHERE TO FORM AN OXIDIZED FILM ON ITS SURFACE AND COINING SAID BODY IN A DIE TO THEREBY CAUSE PENETRATION OF SAID OXIDE FILM AND TO THEREBY ALSO FORM SAID BODY TO A PREDETERMINED SIZE.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |