US3223044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-area vane type fluid pressure energy translating devices
Assignee: American Brake Shoe Co
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Filing: 1963-07-18
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Granted: 1965-12-14
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Expires: 1983-07-18
Abstract
No abstract record available.
Inventors
- 👤 Cecil E Adams
- 👤 Villers Gerald E De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:36
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3446; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863; F01C21/0881; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3446
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A FLUID PRESSURE ENERGY TRANSLATING DEVICE, A CASING HAVING SIDE AND PERIPHERAL WALLS FORMING A ROTOR CHAMBER WITH CIRCUMFERENTIALLY SPACED LOW AND HIGH PRESSURE PORTS IN LOW AND HIGH PRESSURE ZONES, ALTERNATE TRANSFER AND SEALING ZONES BETWEEN SAID PORTS, A ROTOR SUPPORTED FOR ROTATION IN SAID CHAMBER, VANES MOUNTED IN VANE SLOTS IN SAID ROTOR, SAID VANES AND ROTOR COOPERATING WITH SAID SIDE AND PERIPEHRAL WALLS TO FORM FLUID TRANSFER POCKETS IN SAID TRANSFER ZONES, PISTON MEANS FOR EACH VANE MOVABLE WITH RESPECT THERETO, EACH OF SAID PISTON MEANS HAVING A PISTON END EXPOSED TO FLUID UNDER PRESSURE TO URGE SAID VANE TOWARD ONE OF SAID WALLS, PASSAGEWAY MEANS, WITHIN SAID ROTOR INTERCONNECTING SAID PISTON ENDS, SAID PASSAGEWAY MEANS INCLUDING
Claim 2
Dependent Claim
121 words
IN A FLUID PRESSURE ENERGY TRANSLATING DEVICE, A CASING HAVING SIDE AND PERIPHERAL WALLS FORMING A ROTOR CHAMBER WITH CIRCUMFERENTIALLY SPACED LOW AND HIGH PRESSURE PORTS IN LOW AND HIGH PRESSURE ZONES, ALTERNATE TRANSFER AND SEALING ZONES BETWEEN SAID PORTS, A ROTOR SUPPORTED FOR ROTATION IN SAID CHAMBER, VANES MOUNTED IN VANE SLOTS IN SAID ROTOR, SAID VANES AND ROTOR COOPERATING WITH SAID SIDE AND PERIPEHRAL WALLS TO FORM FLUID TRANSFER POCKETS IN SAID TRANSFER ZONES, PISTON MEANS FOR EACH VANE MOVABLE WITH RESPECT THERETO, EACH OF SAID PISTON MEANS HAVING A PISTON END EXPOSED TO FLUID UNDER PRESSURE TO URGE SAID VANE TOWARD ONE OF SAID WALLS, PASSAGEWAY MEANS, WITHIN SAID ROTOR INTERCONNECTING SAID PISTON ENDS, SAID PASSAGEWAY MEANS INCLUDING
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |