Patent US3148628A successfully refreshed from Google Patents.
US3148628A
Expired / Lapsed
US
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Hydraulic apparatus
Assignee: Dowty Hydraulic Units Ltd
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Filing: 1962-05-24
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Granted: 1964-09-15
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Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 Boydell Kenneth Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:00
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/0064; F01B3/10; F01B3/103; F01B3/109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PUMP OR MOTOR UNIT OF THE CHARACTER DESCRIBED, COMPRISING A PLURALITY OF PUMPS OR MOTORS EACH OF SUBSTANTIAL LENGTH COMPARED TO ITS BREADTH AND DEPTH, AND EACH INCLUDING AN INDIVIDUAL DRIVE SHAFT, A CYLINDER BLOCK ROTATIVE ABOUT AN AXIS INTERSECTING ITS DRIVE SHAFT''S AXIS AT A GIVEN ANGLE WHEN IN USE, THE SEVERAL PUMPS OR MOTORS BEING SIMILARLY ORIENTED WITH THEIR DRIVE SHAFTS PROJECTING IN PARALLELISM AT THE SAME END OF THEIR LENGTH, AND THEIR CYLINDER BLOCKS'' AXES ALSO PARALLEL AT THE OPPOSITE END, ALL CORRESPONDING AXES BEING DISPOSED CLOSELY ADJACENT, AND A MAIN DRIVE SHAFT COMMON TO AND POSITIVELY JOINING THE RESPECTIVE INDIVIDUAL DRIVE SHAFTS.
Claim 2
Dependent Claim
107 words
A PUMP OR MOTOR UNIT OF THE CHARACTER DESCRIBED, COMPRISING A PLURALITY OF PUMPS OR MOTORS EACH OF SUBSTANTIAL LENGTH COMPARED TO ITS BREADTH AND DEPTH, AND EACH INCLUDING AN INDIVIDUAL DRIVE SHAFT, A CYLINDER BLOCK ROTATIVE ABOUT AN AXIS INTERSECTING ITS DRIVE SHAFT''S AXIS AT A GIVEN ANGLE WHEN IN USE, THE SEVERAL PUMPS OR MOTORS BEING SIMILARLY ORIENTED WITH THEIR DRIVE SHAFTS PROJECTING IN PARALLELISM AT THE SAME END OF THEIR LENGTH, AND THEIR CYLINDER BLOCKS'' AXES ALSO PARALLEL AT THE OPPOSITE END, ALL CORRESPONDING AXES BEING DISPOSED CLOSELY ADJACENT, AND A MAIN DRIVE SHAFT COMMON TO AND POSITIVELY JOINING THE RESPECTIVE INDIVIDUAL DRIVE SHAFTS.
References Cited (Backward Citations)
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Cited
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US2967395A
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Cited
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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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |