US3156192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Stewart Warner Corp
•
Filing: 1961-09-22
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Granted: 1964-11-10
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Expires: 1981-09-22
Abstract
No abstract record available.
Inventors
- 👤 Forrest L Austin
- 👤 Potter Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:34
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/08; F01; F01B; F01B3/00; F01B3/0032; F01B3/10; F01B3/103; F01B3/104; F01B3/109; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
354 words
IN COMBINATION, A VARIABLE CAPACITY HYDRAULIC PUMP OR MOTOR UNIT, COMPRISING A CASING, FIRST AND SECOND MEMBERS SUPPORTED BY THE CASING TO ROTATE, RESPECTIVELY, ABOUT FIRST AND SECOND ROTATIONAL AXES FIXED RELATIVE TO ONE ANOTHER AND TO THE CASING AND INTERSECTING AT A GIVEN ACUTE ANGLE LESS THAN 45*, REACTION AREAS ON THE FIRST AND SECOND MEMBERS SPACED APART AND GENERALLY FACING EACH OTHER, THE FIRST OF THE REACTION AREAS ON THE FIRST MEMBER BEING OFFSET FROM AND INCLINED RELATIVE TO THE ROTATIONAL AXIS OF SAID FIRST MEMBER AT AN ANGLE THE COMPLEMENT OF THE ABOVE-MENTIONED GIVEN ANGLE, THE SECOND OF THE REACTION AREAS ON THE SECOND MEMBER BEING FIXED RELATIVE TO THE ROTATIONAL AXIS OF THE SECOND MEMBER AND EXTENDED NORMAL THERETO AND SYMMETRICALLY THEREOF,SAID FIRST REACTION AREA BEING MOVABLE UPON ROTATION OF THE FIRST MEMBER TRANSVERSELY OF THE ROTATIONAL OF AXIS OF THE SECOND MEMBER AND BEING IN ONLY ONE ROTATABLE POSITION OF THE FIRST MEMBER NORMAL TO AND GENERALLY SYMMETRICAL OF SAID SECOND ROTATIONAL AXIS, AND EXPANSIBLE FLUID CHAMBER MEANS CONFINED BETWEEN THE REACTION AREAS, SAID FLUID CHAMBER MEANS INCLUDING A CYLINDER BLOCK HAVING A VALVE SURFACE MATING FLUSH ON ONE OF THE REACTION AREAS AND HAVING A PLURALITY OF SPACED THROUGH-CYLINDER BORES EACH OPEN AT ONE END TO THE VALVE SURFACE TO BE CLOSED BY THE ONE REACTION AREA, MEANS TO SUPPORT THE CYLINDER BLOCK TO ROTATE ABOUT A ROTATIONAL AXIS FIXED NORMAL TO SYMMETRICALLY OF THE ONE REACTION AREA, A PISTON IN EACH OF THE CYLINDER BORES DEFINING THEREIN WITH THE ONE REACTION AREA A FLUID CHAMBER, CONNECTING RODS FIXED BETWEEN THE PISTONS AND THE OTHER OF THE REACTION AREAS AT SPACED LOCATIONS THEREON SYMMETRICALLY OF ITS TRANSVERSE SYMMETRICAL AXIS, AND INLET AND OUTLET PORT MEANS IN THE ONE REACTION AREA FOR PORTING FLUID FOR THE CHAMBERS, WHEREBY ROTATION OF THE FIRST MEMBER ABOUT THE FIRST ROTATIONAL AXIS MOVES THE FIRST REACTION AREA THEREON TRANSVERSELY OF THE SECOND ROTATIONAL AXIS OF THE SECOND MEMBER TO ADJUST THE OPERATING STROKE OF THE HYDRAULIC UNIT EFFECTED UPON ROTATION OF THE SECOND MEMBER AND THE CYLINDER BLOCK ABOUT THEIR RESPECTIVE ROTATIONAL AXES.
Claim 2
Dependent Claim
354 words
IN COMBINATION, A VARIABLE CAPACITY HYDRAULIC PUMP OR MOTOR UNIT, COMPRISING A CASING, FIRST AND SECOND MEMBERS SUPPORTED BY THE CASING TO ROTATE, RESPECTIVELY, ABOUT FIRST AND SECOND ROTATIONAL AXES FIXED RELATIVE TO ONE ANOTHER AND TO THE CASING AND INTERSECTING AT A GIVEN ACUTE ANGLE LESS THAN 45*, REACTION AREAS ON THE FIRST AND SECOND MEMBERS SPACED APART AND GENERALLY FACING EACH OTHER, THE FIRST OF THE REACTION AREAS ON THE FIRST MEMBER BEING OFFSET FROM AND INCLINED RELATIVE TO THE ROTATIONAL AXIS OF SAID FIRST MEMBER AT AN ANGLE THE COMPLEMENT OF THE ABOVE-MENTIONED GIVEN ANGLE, THE SECOND OF THE REACTION AREAS ON THE SECOND MEMBER BEING FIXED RELATIVE TO THE ROTATIONAL AXIS OF THE SECOND MEMBER AND EXTENDED NORMAL THERETO AND SYMMETRICALLY THEREOF,SAID FIRST REACTION AREA BEING MOVABLE UPON ROTATION OF THE FIRST MEMBER TRANSVERSELY OF THE ROTATIONAL OF AXIS OF THE SECOND MEMBER AND BEING IN ONLY ONE ROTATABLE POSITION OF THE FIRST MEMBER NORMAL TO AND GENERALLY SYMMETRICAL OF SAID SECOND ROTATIONAL AXIS, AND EXPANSIBLE FLUID CHAMBER MEANS CONFINED BETWEEN THE REACTION AREAS, SAID FLUID CHAMBER MEANS INCLUDING A CYLINDER BLOCK HAVING A VALVE SURFACE MATING FLUSH ON ONE OF THE REACTION AREAS AND HAVING A PLURALITY OF SPACED THROUGH-CYLINDER BORES EACH OPEN AT ONE END TO THE VALVE SURFACE TO BE CLOSED BY THE ONE REACTION AREA, MEANS TO SUPPORT THE CYLINDER BLOCK TO ROTATE ABOUT A ROTATIONAL AXIS FIXED NORMAL TO SYMMETRICALLY OF THE ONE REACTION AREA, A PISTON IN EACH OF THE CYLINDER BORES DEFINING THEREIN WITH THE ONE REACTION AREA A FLUID CHAMBER, CONNECTING RODS FIXED BETWEEN THE PISTONS AND THE OTHER OF THE REACTION AREAS AT SPACED LOCATIONS THEREON SYMMETRICALLY OF ITS TRANSVERSE SYMMETRICAL AXIS, AND INLET AND OUTLET PORT MEANS IN THE ONE REACTION AREA FOR PORTING FLUID FOR THE CHAMBERS, WHEREBY ROTATION OF THE FIRST MEMBER ABOUT THE FIRST ROTATIONAL AXIS MOVES THE FIRST REACTION AREA THEREON TRANSVERSELY OF THE SECOND ROTATIONAL AXIS OF THE SECOND MEMBER TO ADJUST THE OPERATING STROKE OF THE HYDRAULIC UNIT EFFECTED UPON ROTATION OF THE SECOND MEMBER AND THE CYLINDER BLOCK ABOUT THEIR RESPECTIVE ROTATIONAL AXES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |