Patent US3185241A successfully refreshed from Google Patents.
US3185241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid drive tractor
Assignee: Case LLC
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Filing: 1960-12-06
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Granted: 1965-05-25
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Expires: 1980-12-06
Abstract
No abstract record available.
Inventors
- 👤 Molvin F Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:00
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F04C14/223; F04C14/226; B; B60; B60K; B60K17/00; B60K17/04; B60K17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
IN A TRACTOR THE COMBINATION OF AN ENGINE, A MAIN CLUTCH, A CONNECTION DRIVEN BY THE ENGINE AND IN DRIVING RELATION TO THE MAIN CLUTCH, A BELT PULLEY, MECHANISM INCLUDING A SHAFT CONNECTED TO SAID MAIN CLUTCH AND TO SAID BELT PULLEY SO THAT BELT PULLEY IS DRIVEN FROM THE ENGINE THROUGH THE MAIN CLUTCH, A TRANSMISSION INCLUDING A VARIABLE DISPLACEMENT FLUID PUMP CONNECTED WITH SAID SHAFT SO AS TO BE DRIVEN FROM THE ENGINE THROUGH THE MAIN CLUTCH, A FLUID MOTOR, CONDUITS CONNECTING THE PUMP AND MOTOR, A TRACTION UNIT, MECHANISM CONNECTED TO SAID MOTOR AND SAID TRACTION UNIT, DRIVEN BY THE FLUID MOTOR AND DRIVING SAID TRACTION UNIT, DRIVEN BY THE FLUID MOTOR BEING ADJUSTABLE AT WILL FROM ZERO TO MAXIMUM DISPLACEMENT FOR OPERATING SAID MOTOR AT ANY SPEED WITHIN THE RANGE OF ADJUSTMENT OF SAID PUMP, AND MEANS FOR SO ADJUSTING SAID PUMP WHILE SAID CLUTCH IS ENGAGED WHEREBY THE TRAVEL OF SAID TRACTOR MAY BE CONTROLLED THROUGHOUT THE SPEED RANGE AFFORDED BY SAID PUMP WITHOUT AFFECTING THE OPERATION OF SAID BELT PULLEY.
Claim 2
Dependent Claim
176 words
IN A TRACTOR THE COMBINATION OF AN ENGINE, A MAIN CLUTCH, A CONNECTION DRIVEN BY THE ENGINE AND IN DRIVING RELATION TO THE MAIN CLUTCH, A BELT PULLEY, MECHANISM INCLUDING A SHAFT CONNECTED TO SAID MAIN CLUTCH AND TO SAID BELT PULLEY SO THAT BELT PULLEY IS DRIVEN FROM THE ENGINE THROUGH THE MAIN CLUTCH, A TRANSMISSION INCLUDING A VARIABLE DISPLACEMENT FLUID PUMP CONNECTED WITH SAID SHAFT SO AS TO BE DRIVEN FROM THE ENGINE THROUGH THE MAIN CLUTCH, A FLUID MOTOR, CONDUITS CONNECTING THE PUMP AND MOTOR, A TRACTION UNIT, MECHANISM CONNECTED TO SAID MOTOR AND SAID TRACTION UNIT, DRIVEN BY THE FLUID MOTOR AND DRIVING SAID TRACTION UNIT, DRIVEN BY THE FLUID MOTOR BEING ADJUSTABLE AT WILL FROM ZERO TO MAXIMUM DISPLACEMENT FOR OPERATING SAID MOTOR AT ANY SPEED WITHIN THE RANGE OF ADJUSTMENT OF SAID PUMP, AND MEANS FOR SO ADJUSTING SAID PUMP WHILE SAID CLUTCH IS ENGAGED WHEREBY THE TRAVEL OF SAID TRACTOR MAY BE CONTROLLED THROUGHOUT THE SPEED RANGE AFFORDED BY SAID PUMP WITHOUT AFFECTING THE OPERATION OF SAID BELT PULLEY.
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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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |