Patent US3354791A successfully refreshed from Google Patents.
US3354791A
Expired / Lapsed
US
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Piston
Assignee: Individual
•
Filing: 1965-05-24
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Granted: 1967-11-28
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Gunnar A Wahlmark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:29
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/001; F01; F01B; F01B3/00; F01B3/0082; F01B3/0085; F01B9/00; F01B9/02; F01B9/026; F04; F04B; F04B1/00; F04B1/12; F04B1/122; F04B1/124; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49256; Y10T29/49826; Y10T29/49945
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PISTON CONSTRUCTION, COMRISING: A PISTON HEAD ADAPTED FOR SLIDING MOVEMENT IN A CYLINDER, SAID PISTON HEAD HAVING A GENERALLY CYLINDRICAL BORE FORMED THEREIN, A DRIVE CONNECTION ADAPTED TO OPERATIVELY CONNECT THE PISTON TO RECEIVING MEANS, A SHANK CONNECTING SAID PISTON HEAD AND SAID DIRVE CONNECTION, SAID SHANK COMPRISING A GENERALLY CIRCULAR CYLINDRICAL HOLLOW TUBE HAVING ONE END SEATED IN SAID BORE, SAID TUBE HAVING A LONGITUDINALLY EXTENDING SEAM FORMED THEREIN WHEREBY IT IS RADIALLY RE-
Claim 2
Dependent Claim
76 words
A PISTON CONSTRUCTION, COMRISING: A PISTON HEAD ADAPTED FOR SLIDING MOVEMENT IN A CYLINDER, SAID PISTON HEAD HAVING A GENERALLY CYLINDRICAL BORE FORMED THEREIN, A DRIVE CONNECTION ADAPTED TO OPERATIVELY CONNECT THE PISTON TO RECEIVING MEANS, A SHANK CONNECTING SAID PISTON HEAD AND SAID DIRVE CONNECTION, SAID SHANK COMPRISING A GENERALLY CIRCULAR CYLINDRICAL HOLLOW TUBE HAVING ONE END SEATED IN SAID BORE, SAID TUBE HAVING A LONGITUDINALLY EXTENDING SEAM FORMED THEREIN WHEREBY IT IS RADIALLY RE-
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |