US3374626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant torque centering device for hydrostatic transmission control
Assignee: Case LLC
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Filing: 1966-07-05
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Granted: 1968-03-26
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Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 Frank R Catuara
- 👤 Donald W Moyer
- 👤 Pierce F Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:35
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/42; F16H61/427; F16H61/437; F16H61/439; F16H61/423; F16H61/433; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN A REVERSIBLE HYDROSTATIC TRANSMISSION, A REVERSIBLE VARIABLE DISPLACEMENT SWASH PLATE PUMP, A REVERSIBLE VARIABLE DISPLACEMENT SWASH PLATE MOTOR, CAM PLATE MEANS PIVOTALLY MOVABLE IN OPPOSITE DIRECTIONS FROM A NEUTRAL CENTER POSITION AND HAVING SEPARATE PORTIONS THEREON FOR INDEPENDENTLY CONTROLLING DISPLACEMENT OF THE PUMP AND DISPLACEMENT OF THE MOTOR ON MOVEMENT IN EITHER DIRECTION FROM THE NEUTRAL CENTER POSITION, ACTUATING MEANS CONNECTED TO SAID CAM PLATE MEANS AND OPERABLE UPON APPLICATION OF AN EXTERNAL FORCE FOR PIVOTING SAID CAM PLATE MEANS IN OPPOSITE DIRECTIONS FROM A NEUTRAL CENTER POSITION, LEVER MEANS PIVOTALLY MOUNTED FOR MOVEMENT IN OPPOSITE DIRECTIONS FROM A NEUTRAL CENTER POSITION AND ENGAGEABLE BY SAID CAM PLATE MEANS FOR SELECTIVE MOVEMENT IN OPPOSITE DIRECTIONS THEREWITH, RESILIENT MEANS CONNECTED TO AND REACTIVE UPON SAID LEVER MEANS FOR NORMALLY URGING THE LATTER MEANS TOWARD A NEUTRAL CENTER POSITION AND OPERATIVE UPON RELEASE OF THE EXTERNAL ACTUATING FORCE FOR URGING SAID CAM PLATE MEANS TO A NEUTRAL CENTER POSITION.
Claim 2
Dependent Claim
158 words
IN A REVERSIBLE HYDROSTATIC TRANSMISSION, A REVERSIBLE VARIABLE DISPLACEMENT SWASH PLATE PUMP, A REVERSIBLE VARIABLE DISPLACEMENT SWASH PLATE MOTOR, CAM PLATE MEANS PIVOTALLY MOVABLE IN OPPOSITE DIRECTIONS FROM A NEUTRAL CENTER POSITION AND HAVING SEPARATE PORTIONS THEREON FOR INDEPENDENTLY CONTROLLING DISPLACEMENT OF THE PUMP AND DISPLACEMENT OF THE MOTOR ON MOVEMENT IN EITHER DIRECTION FROM THE NEUTRAL CENTER POSITION, ACTUATING MEANS CONNECTED TO SAID CAM PLATE MEANS AND OPERABLE UPON APPLICATION OF AN EXTERNAL FORCE FOR PIVOTING SAID CAM PLATE MEANS IN OPPOSITE DIRECTIONS FROM A NEUTRAL CENTER POSITION, LEVER MEANS PIVOTALLY MOUNTED FOR MOVEMENT IN OPPOSITE DIRECTIONS FROM A NEUTRAL CENTER POSITION AND ENGAGEABLE BY SAID CAM PLATE MEANS FOR SELECTIVE MOVEMENT IN OPPOSITE DIRECTIONS THEREWITH, RESILIENT MEANS CONNECTED TO AND REACTIVE UPON SAID LEVER MEANS FOR NORMALLY URGING THE LATTER MEANS TOWARD A NEUTRAL CENTER POSITION AND OPERATIVE UPON RELEASE OF THE EXTERNAL ACTUATING FORCE FOR URGING SAID CAM PLATE MEANS TO A NEUTRAL CENTER POSITION.
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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |