Hydrostatic drive, particularly for automotive vehicles

Claim 1

A HYDROSTATIC DRIVE, PARTICULARLY FOR AUTOMOTIVE VEHICLES, COMPRISING A ROTARY HOUSING, A CONTROL DISK DISPOSED CROSSWISE IN AND SECURED TO SAID ROTARY HOUSING FOR COMMON ROTATION THEREWITH, A PRIMARY PART FORMED AS AN AXIAL PISTON TYPE PUMP INCLUDING A FIRST PISTON DRUM, A SECONDARY PART FORMED AS A PISTON TYPE MOTOR INCLUDING A SECOND PISTON DRUM, SAID PRIMARY PART INCLUDING A FIRST SWASH PLATE, SAID SECONDARY PART INCLUDING A SECOND SWASH PLATE, SAID SWACH PLATES BEING SWINGABLY MOUNTED IN SAID ROTARY HOUSING, THE LATTER INCLUDING A PINION ADAPTED TO TRANSMIT THE OUTPUT OF SAID DRIVE, SAID CONTROL DISK INCLUDING AN INNER PRESSURE MEANS FLOW CIRCLE OF SAID DRIVE, A DRIVING SHAFT ENTERING SAID ROTARY HOUSING AND CONNECTED WITH SAID FIRST PISTON DRUM FOR JOINT ROTATION THEREWITH, AN IMMOVABLE HOUSING, A HOLDING SHAFT PROJECTING FROM SAID ROTARY HOUSING, SAID SECOND PISTON DRUM BEING SUPPORTED ON SAID IMMOVABLE HOUSING BY MEANS OF SAID HOLDING SHAFT, A FILLING PUMP HAVING A PRESSURE SIDE AND A SUCTION SIDE AND A FEEDING CONDUIT CONNECTED WITH SAID FILLING PUMP FOR FEEDING WORKING FLUID THROUGH SAID HOLDING SHAFT, SAID WORKING FLUID, OPERATING SIMULTANEOUSLY AS A LUBRICATING MEANS, INTO SAID INNER PRESSURE MEANS FLOW CIRCLE OF SAID DRIVE, A SPRING BIASED DISENGAGING VALVE DISPOSED IN SAID CONTROL DISK AND RESPONDING TO A PRESSURE DIFFERENCE IN SAID FEEDING CONDUIT TO SHIFT FROM A CLOSING POSITION INTO AN OPEN POSITION, SAID DRIVE HAVING AN IDLER LUBRICATION PATH AND AN OPERATIVE LUBRICATION PATH, A REVERSING VALVE AUTOMATICALLY COOPERATING WITH SAID DISENGAGEMENT VALVE AND DISPOSED INSIDE OF SAID DRIVE, TO SHIFT THE FEEDING OF SAID LUBRICATION MEANS FROM ONE OF SAID LUBRICATION PATHS TO THE OTHER OF SAID LUBRICATION PATHS IN RESPONSE TO THE PRESSURE IN SAID FEEDING CONDUIT.