US3169488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary cylinder barrel and method of making same
Assignee: New York Air Brake LLC
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Filing: 1961-11-03
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Granted: 1965-02-16
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Expires: 1981-11-03
Abstract
No abstract record available.
Inventors
- 👤 Karl W Galliger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:53
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/0055; F01B3/0052; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49696
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
IN A ROTARY CYLINDER BARREL FOR A RECIPROCATING PISTON PUMP OR MOTOR HAVING A VALVING FACE AT ONE END THAT COOPERATES WITH A STATIONARY VALVE FACE, AND AN OPPOSITE END FACE FROM WHICH THE PISTONS PROJECT, THE IMPROVEMENT THAT COMPRISES: (A) A BORE EXTENDING THROUGH THE CYLINDER BARREL FROM END TO END; AND (B) A ONE-PIECE INSERT FIXED AGAINST MOVEMENT IN SAID BORE AND MADE OF BEARING MATERIAL, SAID INSERT HAVING (1) A SLEEVE PORTION ADAPTED TO RECEIVE THE PISTON, AND (2) AN END PORTION WHOSE FACE IS FLUSH WITH THE VALVING FACE OF THE CYLINDER BARREL AND WHICH
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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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |