Implement carrier having hydrostatic drive

• US 3,207,244 A
• Filed: 12/31/1962
• Issued: 09/21/1965
• Est. Priority Date: 12/31/1962
• Status: Expired due to Term

• Current Assignee: Abram I. Becker, Clayton L. Enix, William H. Knapp
• Original Assignee: Abram I. Becker, Clayton L. Enix, William H. Knapp
• Inventors: Becker, Abram I., Knapp, William H., Enix, Clayton L.
• Application Number:
  US04/248,661
• Time in Patent Office: 995 Days
• US Class Current: 180/6.48
• CPC Class Codes: B60K 17/10 of fluid gearing of fluid clutches B60K17/02
• CPC Class Codes: F16H 57/0438 Pumps of jet type, e.g. jet pumps with means to inject high pressure fluid to the suction area thereby supercharging the pump or means reducing cavitations
• CPC Class Codes: F16H 61/40 hydrostatic
• CPC Class Codes: F16H 61/4139 Replenishing or scavenging pumps, e.g. auxiliary charge pumps

Claims

1. 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-