US3102494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary vane hydraulic power unit
Assignee: American Brake Shoe Co
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Filing: 1961-02-23
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Granted: 1963-09-03
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Expires: 1981-02-23
Abstract
No abstract record available.
Inventors
- 👤 Cecil E Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:52
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A HYDRAULIC POWER UNIT, THE COMBINATION OF A ROTOR, A CAM ENCIRCLING SAID ROTOR, SAID ROTOR DEFINING A PLURALITY OF CIRCUMFERENTIALLY SPACED VANE SLOTS THEREIN, A PLURALITY OF VANES SLIDABLY MOUNTED IN SAID RESPECTIVE SLOTS TO ENGAGE SAID CAM, EACH OF SAID VANES HAVING A RELATIVELY THICK OUTER PORTION AND A RELATIVELY THIN INNER PORTION, EACH OF SAID INNER AND OUTER VANE PORTIONS DEFINING TWO PARALLEL SIDE SURFACE AREAS, EACH OF SAID VANE SLOTS BEING SHAPED TO DEFINE PARALLEL SURFACE AREAS SLIDABLY ENGAGING THE CORRESPONDING SIDE SURFACES ON THE RELATIVELY THICK OUTER PORTION OF EACH VANE AND TO DEFINE PARALLEL SURFACES ENGAGING THE CORRESPONDING SIDE SURFACES ON THE RELATIVELY THIN INNER PORTION OF THE COACTING VANE, EACH VANE DEFINING AT THE JUNCTURE OF THE RELATIVELY THICK OUTER PORTION THEREOF WITH THE RELATIVELY THIN INNER PORTION THEREOF A FIRST DIFFERENTIAL SURFACE AREA WHICH WHEN SUBJECTED TO FLUID PRESSURE WILL URGE THE VANE OUTWARDLY,
Claim 2
Dependent Claim
153 words
IN A HYDRAULIC POWER UNIT, THE COMBINATION OF A ROTOR, A CAM ENCIRCLING SAID ROTOR, SAID ROTOR DEFINING A PLURALITY OF CIRCUMFERENTIALLY SPACED VANE SLOTS THEREIN, A PLURALITY OF VANES SLIDABLY MOUNTED IN SAID RESPECTIVE SLOTS TO ENGAGE SAID CAM, EACH OF SAID VANES HAVING A RELATIVELY THICK OUTER PORTION AND A RELATIVELY THIN INNER PORTION, EACH OF SAID INNER AND OUTER VANE PORTIONS DEFINING TWO PARALLEL SIDE SURFACE AREAS, EACH OF SAID VANE SLOTS BEING SHAPED TO DEFINE PARALLEL SURFACE AREAS SLIDABLY ENGAGING THE CORRESPONDING SIDE SURFACES ON THE RELATIVELY THICK OUTER PORTION OF EACH VANE AND TO DEFINE PARALLEL SURFACES ENGAGING THE CORRESPONDING SIDE SURFACES ON THE RELATIVELY THIN INNER PORTION OF THE COACTING VANE, EACH VANE DEFINING AT THE JUNCTURE OF THE RELATIVELY THICK OUTER PORTION THEREOF WITH THE RELATIVELY THIN INNER PORTION THEREOF A FIRST DIFFERENTIAL SURFACE AREA WHICH WHEN SUBJECTED TO FLUID PRESSURE WILL URGE THE VANE OUTWARDLY,
References Cited (Backward Citations)
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US2832293A
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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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |