Patent US3272142A successfully refreshed from Google Patents.
US3272142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porting and passage arrangement for fluid pressure device
Assignee: CHAR LYNN CO
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Filing: 1965-08-13
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Granted: 1966-09-13
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Expires: 1985-08-13
Abstract
No abstract record available.
Inventors
- 👤 Wayne B Easton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:52
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/103; F04C2/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A FLUID PRESSURE DEVICE, A CASING, AN INTERNALLY TOOTHED RING MEMBER DEFINING THE OUTER WALL OF A CHAMBER, A COOPERATING EXTERNALLY TOOTHED STAR MEMBER HAVING FEWER TEETH THAN SAID RING MEMBER DISPOSED ECCENTRICALLY IN SAID CHAMBER, ONE OF SAID MEMBERS HAVING ORBITAL MOVEMENT ABOUT THE AXIS OF THE OTHER OF SAID MEMBERS AND ONE OF SAID MEMBERS HAVING ROTATIONAL MOVEMENT ABOUT ITS OWN AXIS, THE TEETH OF SAID MEMBERS INTERMESHING IN SEALING ENGAGEMENT TO FORM EXPANDING CELLS ON ONE SIDE OF THE LINE ECCENTRICITY BETWEEN SAID MEMBERS AND CONTRACTING CELLS ON THE OTHER SIDE OF SAID LINE DURING RELATIVE MOVEMENT BETWEEN SAID MEMBERS, A VALVE ROTATABLY DISPOSED IN SAID CASING, DRIVE MEANS OPERATIVELY CONNECTING SAID VALVE TO ONE OF SAID MEMBERS FOR ROTATION OF SAID VALVE IN SYNCHRONISM WITH ONE OF SAID MOVEMENTS OF ONE OF SAID MEMBERS, SAID CASING AND SAID VALVE HAVING MUTUALLY ENGAGING PLANE SURFACES, FLUID INLET AND OUTLET
Claim 2
Dependent Claim
153 words
IN A FLUID PRESSURE DEVICE, A CASING, AN INTERNALLY TOOTHED RING MEMBER DEFINING THE OUTER WALL OF A CHAMBER, A COOPERATING EXTERNALLY TOOTHED STAR MEMBER HAVING FEWER TEETH THAN SAID RING MEMBER DISPOSED ECCENTRICALLY IN SAID CHAMBER, ONE OF SAID MEMBERS HAVING ORBITAL MOVEMENT ABOUT THE AXIS OF THE OTHER OF SAID MEMBERS AND ONE OF SAID MEMBERS HAVING ROTATIONAL MOVEMENT ABOUT ITS OWN AXIS, THE TEETH OF SAID MEMBERS INTERMESHING IN SEALING ENGAGEMENT TO FORM EXPANDING CELLS ON ONE SIDE OF THE LINE ECCENTRICITY BETWEEN SAID MEMBERS AND CONTRACTING CELLS ON THE OTHER SIDE OF SAID LINE DURING RELATIVE MOVEMENT BETWEEN SAID MEMBERS, A VALVE ROTATABLY DISPOSED IN SAID CASING, DRIVE MEANS OPERATIVELY CONNECTING SAID VALVE TO ONE OF SAID MEMBERS FOR ROTATION OF SAID VALVE IN SYNCHRONISM WITH ONE OF SAID MOVEMENTS OF ONE OF SAID MEMBERS, SAID CASING AND SAID VALVE HAVING MUTUALLY ENGAGING PLANE SURFACES, FLUID INLET AND OUTLET
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |