US3108642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: Deere and Co
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Filing: 1961-12-04
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Granted: 1963-10-29
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 George D Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:16
CPC Classifications
A; A01; A01B; A01B39/00; A01B39/12; A01B39/18; A01B39/19; A01B63/00; A01B63/14; A01B63/16; A01B63/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
IN AN IMPLEMENT HAVING A WORKING PART SHIFTABLE BETWEEN FIRST AND SECOND POSITIONS, A DRIVING ELEMENT, AND FLUID LIFT MEANS INCLUDING A DOUBLE ACTING FLUID CYLINDER CONNECTION TO AND FOR SHIFTING SAID PART BETWEEN FIRST AND SECOND POSITIONS, SAID DOUBLE ACTING FLUID CYLINDER HAVING OPPOSITE ENDS ALTERNATELY FLUID-PRESSURE-CHARGEABLE AND DISCHARGEABLE, THE IMPROVEMENT COMPRISING: A ROTARY FLUID MOTOR CONNECTED TO AND FOR DRIVING THE ELEMENT AND HAVING INPUT AND DISCHARGE SIDES; A PAIR OF FLUID CONDUITS RESPECTIVELY CONNNECTING SAID INPUT AND DISCHATGE SIDES TO THOSE ENDS OF THE DOUBLE-ACTING FLUID CYLINDER THAT ARE RESPECTIVELY CHARGED AND DISCHARGED INCIDENT TO SHIFTING OF THE WORKING PART FROM THE FIRST POSITION TO THE SECOND POSITION; AND MEANS INCLUDING A ONE-WAY VALVE IN ONE OF SAID CONDUITS OPERATIVE TO CLOSE AGAINST DISCHARGE-TO INPUT FLOW IN THE ROTARY FLUID MOTOR AND TO OPEN TO INPUTTO-DISCHARGE FLOW IN SAID ROTARY FLUID MOTOR, THE RESISTANCE TO FLUID FLOW IN THE ROTARY FLUID MOTOR NORMALLY BEING GREATER THAN THE RESISTANCE TO THE FLUID FLOW IN THE DOUBLE ACTING FLUID CYLINDER WHEN THE WORKING PART IS BEING SHIFTED BETWEEN THE FIRST AND SECOND POSITION.
Claim 2
Dependent Claim
184 words
IN AN IMPLEMENT HAVING A WORKING PART SHIFTABLE BETWEEN FIRST AND SECOND POSITIONS, A DRIVING ELEMENT, AND FLUID LIFT MEANS INCLUDING A DOUBLE ACTING FLUID CYLINDER CONNECTION TO AND FOR SHIFTING SAID PART BETWEEN FIRST AND SECOND POSITIONS, SAID DOUBLE ACTING FLUID CYLINDER HAVING OPPOSITE ENDS ALTERNATELY FLUID-PRESSURE-CHARGEABLE AND DISCHARGEABLE, THE IMPROVEMENT COMPRISING: A ROTARY FLUID MOTOR CONNECTED TO AND FOR DRIVING THE ELEMENT AND HAVING INPUT AND DISCHARGE SIDES; A PAIR OF FLUID CONDUITS RESPECTIVELY CONNNECTING SAID INPUT AND DISCHATGE SIDES TO THOSE ENDS OF THE DOUBLE-ACTING FLUID CYLINDER THAT ARE RESPECTIVELY CHARGED AND DISCHARGED INCIDENT TO SHIFTING OF THE WORKING PART FROM THE FIRST POSITION TO THE SECOND POSITION; AND MEANS INCLUDING A ONE-WAY VALVE IN ONE OF SAID CONDUITS OPERATIVE TO CLOSE AGAINST DISCHARGE-TO INPUT FLOW IN THE ROTARY FLUID MOTOR AND TO OPEN TO INPUTTO-DISCHARGE FLOW IN SAID ROTARY FLUID MOTOR, THE RESISTANCE TO FLUID FLOW IN THE ROTARY FLUID MOTOR NORMALLY BEING GREATER THAN THE RESISTANCE TO THE FLUID FLOW IN THE DOUBLE ACTING FLUID CYLINDER WHEN THE WORKING PART IS BEING SHIFTED BETWEEN THE FIRST AND SECOND 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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |