US3348624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic propulsion system
Assignee: AQUATIC CONTROLS CORP
•
Filing: 1965-04-28
•
Granted: 1967-10-24
•
Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 Jerome O Just
- 👤 Howard W Stern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:24
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/44; B; B60; B60F; B60F3/00; B60F3/0007; F16H61/452
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
231 words
A MULTIPLE SPEED HYDRAULIC PROPULSION SYSTEM FOR A WHEELED VEHICLE, COMPRISING: A PRIME MOVER MOUNTED ON THE VEHICLE; A CONSTANT DISPLACEMENT PUMP MOUNTED ON THE VEHICLE AND DRIVEN BY SAID PRIME MOVER; A RESERVOIR OF HYDRAULIC FLUID MOUNTED ON THE VEHICLE THAT SUPPLIES AND PUMP; TWO PAIRS OF REVERSIBLE HYDRAULIC MOTORS WITH EACH PAIR DRIVINGLY CONNECTED TO A SEPARATE WHEEL AXLE OF THE VEHICLE, EACH OF SAID MOTORS HAVING A PAIR OF INLET-OUTLET PORTS; THREE CONTROL VALVES EACH CONNECTED TO ONE PORT OF TWO MOTORS; INPUT DISTRIBUTION MEANS RECEIVING THE OUTPUT OF SAID PUMP AND CONNECTED TO ONE PORT OF A FIRST MOTOR; AND RETURN DISTRIBUTION MEANS LEADING TO SAID RESERVOIR AND CONNECTED TO ONE PORT OF A LAST MOTOR; EACH OF SAID CONTROL VALVES BEING SHIFTABLE BETWEEN A FIRST POSITION IN WHICH THE PORTS OF SAID MOTORS CONNECTED TO SAID VALVE ARE CONNECTED TO SAID INPUT AND RETURN DISTRIBUTION MEANS AND A SECOND POSITION IN WHICH THE PORTS CONNECTED TO SAID VALVE ARE CONNECTED TOGETHER SO THAT ONE OR MORE OF SAID MOTORS MAY BE CONNECTED IN SERIES AND IN PARALLEL WITH OTHERS OF SAID MOTORS AND SERIALLY CONNECTED MOTORS, WHEREBY THE SPEED AT WHICH SAID MOTORS DRIVE SAID VEHICLE MAY BE INCREASED BY INCREASING THE NUMBER OF SERIALLY CONNECTED MOTORS TO THEREBY INCREASE THE PERCENTAGE OF THE OUTPUT OF SAID PUMP THAT IS SUPPLIED TO EACH OF SAID MOTORS.
Claim 2
Dependent Claim
231 words
A MULTIPLE SPEED HYDRAULIC PROPULSION SYSTEM FOR A WHEELED VEHICLE, COMPRISING: A PRIME MOVER MOUNTED ON THE VEHICLE; A CONSTANT DISPLACEMENT PUMP MOUNTED ON THE VEHICLE AND DRIVEN BY SAID PRIME MOVER; A RESERVOIR OF HYDRAULIC FLUID MOUNTED ON THE VEHICLE THAT SUPPLIES AND PUMP; TWO PAIRS OF REVERSIBLE HYDRAULIC MOTORS WITH EACH PAIR DRIVINGLY CONNECTED TO A SEPARATE WHEEL AXLE OF THE VEHICLE, EACH OF SAID MOTORS HAVING A PAIR OF INLET-OUTLET PORTS; THREE CONTROL VALVES EACH CONNECTED TO ONE PORT OF TWO MOTORS; INPUT DISTRIBUTION MEANS RECEIVING THE OUTPUT OF SAID PUMP AND CONNECTED TO ONE PORT OF A FIRST MOTOR; AND RETURN DISTRIBUTION MEANS LEADING TO SAID RESERVOIR AND CONNECTED TO ONE PORT OF A LAST MOTOR; EACH OF SAID CONTROL VALVES BEING SHIFTABLE BETWEEN A FIRST POSITION IN WHICH THE PORTS OF SAID MOTORS CONNECTED TO SAID VALVE ARE CONNECTED TO SAID INPUT AND RETURN DISTRIBUTION MEANS AND A SECOND POSITION IN WHICH THE PORTS CONNECTED TO SAID VALVE ARE CONNECTED TOGETHER SO THAT ONE OR MORE OF SAID MOTORS MAY BE CONNECTED IN SERIES AND IN PARALLEL WITH OTHERS OF SAID MOTORS AND SERIALLY CONNECTED MOTORS, WHEREBY THE SPEED AT WHICH SAID MOTORS DRIVE SAID VEHICLE MAY BE INCREASED BY INCREASING THE NUMBER OF SERIALLY CONNECTED MOTORS TO THEREBY INCREASE THE PERCENTAGE OF THE OUTPUT OF SAID PUMP THAT IS SUPPLIED TO EACH OF SAID MOTORS.
References Cited (Backward Citations)
US2060220A
Cited
US2370526A
Cited
US2749137A
Cited
GB947761A
Cited
US3149464A
Cited
US3250340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |