Patent US3173376A successfully refreshed from Google Patents.
US3173376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pump or motor
Assignee: UNITED SYSTEMS CORP
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Filing: 1957-03-21
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Granted: 1965-03-16
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Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 Hulman Julius
- 👤 Isaacson Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:14
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0082; F01B3/0091; F01B3/0032; F01B3/0044; F01B3/0052; F01B3/007; F01B3/0085; F01B3/0088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A PISTON TYPE OR MOTOR COMPRISING A HOUSING OF SEPARABLE AXIALLY ARRANGED SECTIONS: A SHAFT EXTENDING AXIALLY OF SAID HOUSING AND BEING ROTATABLY MOUNTED THEREIN; A THRUST PACKAGE COMPRISING A PLURALITY OF PLATES HAVING FLAT SURFACES NESTED WITHIN ONE HOUSING SECTION AND CLAMPED THERETO BY ANOTHER HOUSING SECTION, THE SURFACES OF THE PLATES OF SAID PACKAGE BEING POSITIONED AT A WORK ING ANGLE TO THE AXIS OF SAID HOUSING; SAID SHAFT EXTENDING THROUGH SAID THRUST PACKAGE; A BARREL MOUNTED ON SAID SHAFT, SAID BARREL BEING PROVIDED WITH A PLURALITY OF CYLINDRICAL BORES; PISTONS MOUNTED IN SAID BORES AND UNIVERSALLY JOINTED EACH TO A PISTON ROD, SAID PISTONS BEING DISPLACEABLE WITHIN SAID BORES BY CO-ACTION OF SAID RODS WITH SAID THRUST PACKAGE UPON ROTATION OF SAID SHAFT; SAID THRUST PACKAGE PROVIDING MEANS TO TAKE THE PRESSURE THRUST OF THE PISTONS WHICH ROTATE WITH THE BARREL AND FURTHER
Claim 2
Dependent Claim
147 words
IN A PISTON TYPE OR MOTOR COMPRISING A HOUSING OF SEPARABLE AXIALLY ARRANGED SECTIONS: A SHAFT EXTENDING AXIALLY OF SAID HOUSING AND BEING ROTATABLY MOUNTED THEREIN; A THRUST PACKAGE COMPRISING A PLURALITY OF PLATES HAVING FLAT SURFACES NESTED WITHIN ONE HOUSING SECTION AND CLAMPED THERETO BY ANOTHER HOUSING SECTION, THE SURFACES OF THE PLATES OF SAID PACKAGE BEING POSITIONED AT A WORK ING ANGLE TO THE AXIS OF SAID HOUSING; SAID SHAFT EXTENDING THROUGH SAID THRUST PACKAGE; A BARREL MOUNTED ON SAID SHAFT, SAID BARREL BEING PROVIDED WITH A PLURALITY OF CYLINDRICAL BORES; PISTONS MOUNTED IN SAID BORES AND UNIVERSALLY JOINTED EACH TO A PISTON ROD, SAID PISTONS BEING DISPLACEABLE WITHIN SAID BORES BY CO-ACTION OF SAID RODS WITH SAID THRUST PACKAGE UPON ROTATION OF SAID SHAFT; SAID THRUST PACKAGE PROVIDING MEANS TO TAKE THE PRESSURE THRUST OF THE PISTONS WHICH ROTATE WITH THE BARREL AND FURTHER
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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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |