Patent US3207244A successfully refreshed from Google Patents.
US3207244A
Expired / Lapsed
US
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Implement carrier having hydrostatic drive
Assignee: International Motors LLC
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Filing: 1962-12-31
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Granted: 1965-09-21
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Abram I Becker
- 👤 William H Knapp
- 👤 Clayton L Enix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:14
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/4078; F16H61/4139; B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; F16H57/00; F16H57/04; F16H57/0434; F16H57/0436; F16H57/0438
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A SELF-PROPELLED COMBINE OF THE TYPE HAVING AN ENGINE, GROUND ENGAGING WHEELS MOUNTED ON RIMS, HYDRAULIC CONTROLLED IMPLEMENTS; THE IMPROVEMENT COMPRISING A HYDROSTATIC DRIVE INCLUDING A VARIABLE DELIVERY PUMP HAVING A FLUID INPUT SIDE AND A FLUID OUTPUT SIDE DRIVEN BY SAID ENGINE; HYDRAULICALLY-POWERED DRIVE UNITS MOUNTED WITHIN SAID WHEEL RIMS AND DRIVINGLY CONNECTED TO SAID GROUND ENGAGING WHEELS; A DIRECTION CONTROL VALVE HAVING FLUID INPUT, RETURN AND MOTOR PORTS, SAID DIRECTIONAL CONTROL VALVE HAVING CONDUITS CONNECTING THE FLUID OUTPUT SIDE OF SAID PUMP TO EACH OF SAID HYDRAULIC DRIVE UNITS THROUGH SAID DIRECTIONAL CONTROL VALVE AND CONDUITS FOR RETURNING FLUID FROM EACH OF SAID HYDRAULIC DRIVE UNITS TO SAID DIRECTIONAL CONTROL VALVE, FOR INDIVIDUALLY CONTROLLING THE FLUID FLOW AND ITS DIRECTION TO SAID HYDRAULIC DRIVE UNITS, SAID DIRECTIONAL CONTROL VALVE HAVING A RETURN CONDUIT CONNECTING SAID RETURN PORT TO SAID INPUT SIDE OF SAID VARIABLE DELIVERY PUMP; A FLUID TAKE-OFF VALVE, BETWEEN THE RE-
Claim 2
Dependent Claim
156 words
IN A SELF-PROPELLED COMBINE OF THE TYPE HAVING AN ENGINE, GROUND ENGAGING WHEELS MOUNTED ON RIMS, HYDRAULIC CONTROLLED IMPLEMENTS; THE IMPROVEMENT COMPRISING A HYDROSTATIC DRIVE INCLUDING A VARIABLE DELIVERY PUMP HAVING A FLUID INPUT SIDE AND A FLUID OUTPUT SIDE DRIVEN BY SAID ENGINE; HYDRAULICALLY-POWERED DRIVE UNITS MOUNTED WITHIN SAID WHEEL RIMS AND DRIVINGLY CONNECTED TO SAID GROUND ENGAGING WHEELS; A DIRECTION CONTROL VALVE HAVING FLUID INPUT, RETURN AND MOTOR PORTS, SAID DIRECTIONAL CONTROL VALVE HAVING CONDUITS CONNECTING THE FLUID OUTPUT SIDE OF SAID PUMP TO EACH OF SAID HYDRAULIC DRIVE UNITS THROUGH SAID DIRECTIONAL CONTROL VALVE AND CONDUITS FOR RETURNING FLUID FROM EACH OF SAID HYDRAULIC DRIVE UNITS TO SAID DIRECTIONAL CONTROL VALVE, FOR INDIVIDUALLY CONTROLLING THE FLUID FLOW AND ITS DIRECTION TO SAID HYDRAULIC DRIVE UNITS, SAID DIRECTIONAL CONTROL VALVE HAVING A RETURN CONDUIT CONNECTING SAID RETURN PORT TO SAID INPUT SIDE OF SAID VARIABLE DELIVERY PUMP; A FLUID TAKE-OFF VALVE, BETWEEN THE RE-
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |