Patent US3227586A successfully refreshed from Google Patents.
US3227586A
Expired / Lapsed
US
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Track pin bushing
Assignee: Caterpillar Inc
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Filing: 1963-08-19
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Granted: 1966-01-04
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Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 T H Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:37
CPC Classifications
F; F16; F16G; F16G13/00; B; B62; B62D; B62D55/00; B62D55/08; B62D55/088; B62D55/0887; B62D55/18; B62D55/20; B62D55/205; B62D55/21; C; C21; C21D; C21D9/00; C21D9/08; C21D9/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PLAIN LOW CARBON, CASE HARDENED, STEEL TRACK PIN BUSHING COMPRISING A SUBSTANTIALLY CYLINDRICAL SHAPE HAVING A CYLINDRICAL LONGITUDINAL BORE THERETHROUGH FORMING INNER AND OUTER EXTERIOR PORTIONS WITH A CORE PORTION THEREBETWEEN, SAID STEEL BEING FULLY KILLED AND CONTAINING AT LEAST .0005% BORON BY WEIGHT, SAID CORE PORTION OF
Claim 2
Dependent Claim
49 words
A PLAIN LOW CARBON, CASE HARDENED, STEEL TRACK PIN BUSHING COMPRISING A SUBSTANTIALLY CYLINDRICAL SHAPE HAVING A CYLINDRICAL LONGITUDINAL BORE THERETHROUGH FORMING INNER AND OUTER EXTERIOR PORTIONS WITH A CORE PORTION THEREBETWEEN, SAID STEEL BEING FULLY KILLED AND CONTAINING AT LEAST .0005% BORON BY WEIGHT, SAID CORE PORTION OF
References Cited (Backward Citations)
US2585372A
Cited
US2804412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |