Patent US3671146A successfully refreshed from Google Patents.
US3671146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid energy machine
Assignee: Individual
•
Filing: 1971-02-10
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Granted: 1972-06-20
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Expires: 1991-02-10
Abstract
Abstract A GAS COMPRESSOR, THE SLIDING VANE-TYPE, HAVING AT LEAST ONE VANE SLIDABLY MOUNTED IN A ROTOR. THE ROTOR, IS ROTATABLE WITHIN A ROTARY CYLINDER ON AN AXIS OFFSET FROM THE CYLINDER AXIS. THE CYLINDER AND ROTOR ARE IN SYNCHRONISM, THAT IS, THEY ROTATE AT THE SAME ANGULAR VELOCITY, AND THE VANE IS SLIDABLY MOVABLE THEREBETWEEN. THE VANE IS CHANNELED, AND COOPERATES WITH INLET AND OUTLET CYLINDER PORTS FOR ADMISSION AND DISCHARGE OF THE GAS BEING COMPRESSED.
Inventors
- 👤 William T Alderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:08
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/18; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3441; F01C1/3442; F01C20/00; F01C20/24; F01C20/26; F01C21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |