US3318092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic apparatus
Assignee: Dowty Technical Developments Ltd
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Filing: 1965-07-07
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Granted: 1967-05-09
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Expires: 1985-07-07
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R Boydell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:01
CPC Classifications
F; F16; F16H; F16H39/00; F16H39/04; F16H39/06; F16H39/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A HYDROSTATIC POWER TRANSMISSION COMPRISING A PAIR OF BEARING HOUSINGS, HYDRAULIC PUMP AND MOTOR UNITS WHICH HAVE THEIR DRIVE SHAFTS ROTATABLY MOUNTED IN THE BEARING HOUSINGS, AND WHICH ARE EQUIPPED WITH TILT HEADS THAT ARE HYDRAULICALLY INTERCONNECTED WITH ONE ANOTHER TO TRANSMIT POWER BETWEEN THE SHAFTS, SAID BEARING HOUSINGS BEING FIXED IN RELATION TO ONE ANOTHER SO THAT A COMMON PLANE PASSING THROUGH THE DRIVE SHAFT AND HEAD AXES OF ONE UNIT INTERSECTS A COMMON PLANE PASSING THROUGH THE DRIVE SHAFT AND HEAD AXES OF THE OTHER UNIT, AT AN ANGLE WITHIN THE RANGE OF 70* TO 110*, THE LINE OF INTERSECTION BETWEEN THE TWO PLANES PASSING THROUGH OR CLOSE TO THE POINT OF INTERSECTION BETWEEN THE DRIVE SHAFT AXIS AND THE HEAD AXIS OF EACH UNIT.
Claim 2
Dependent Claim
127 words
A HYDROSTATIC POWER TRANSMISSION COMPRISING A PAIR OF BEARING HOUSINGS, HYDRAULIC PUMP AND MOTOR UNITS WHICH HAVE THEIR DRIVE SHAFTS ROTATABLY MOUNTED IN THE BEARING HOUSINGS, AND WHICH ARE EQUIPPED WITH TILT HEADS THAT ARE HYDRAULICALLY INTERCONNECTED WITH ONE ANOTHER TO TRANSMIT POWER BETWEEN THE SHAFTS, SAID BEARING HOUSINGS BEING FIXED IN RELATION TO ONE ANOTHER SO THAT A COMMON PLANE PASSING THROUGH THE DRIVE SHAFT AND HEAD AXES OF ONE UNIT INTERSECTS A COMMON PLANE PASSING THROUGH THE DRIVE SHAFT AND HEAD AXES OF THE OTHER UNIT, AT AN ANGLE WITHIN THE RANGE OF 70* TO 110*, THE LINE OF INTERSECTION BETWEEN THE TWO PLANES PASSING THROUGH OR CLOSE TO THE POINT OF INTERSECTION BETWEEN THE DRIVE SHAFT AXIS AND THE HEAD AXIS OF EACH UNIT.
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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |