Starter-drive system

Claim 1

IN A TRANSMISSION FOR USE BETWEEN A GENERATOR AND AN ENGINE TO TRANSMIT POWER IN EITHER DIRECTION BETWEEN THE GENERATOR AND THE ENGINE FOR STARTING THE ENGINE FROM THE GENERATOR AND FOR DRIVING THE GENERATOR FROM THE ENGINE, A DIFFERENTIAL GEARING INCLUDING A GENERATOR CONNECTIBLE SHAFT, AN ENGINE CONNECTIBLE SHAFT, GEARING CONNECTING THE TWO SHAFTS IN ORDER TO DRIVE ONE FROM THE OTHER, A CONTROL SHAFT, AND GEARING ON THE CONTROL SHAFT CONNECTED WITH SAID INTERCONNECTING GEARING FOR VARYING THE RATE OF ROTATION OF THE OUTPUT SHAFT OF THE GENERATOR CONNECTIBLE SHAFT AND THE ENGINE CONNECTIBLE SHAFT RELATIVE TO THE RATE OF ROTATION OF THE INPUT SHAFT THEREOF DEPENDING ON THE LOAD IMPOSED BY THE CONTROL SHAFT; A FIRST HYDRAULIC UNIT, MEANS FOR VARYING THE DISPLACEMENT OF SAID FIRST HYDRAULIC UNIT, A SECOND HYDRAULIC UNIT, MEANS FOR VARYING THE DISPLACEMENT OF SAID SECOND HYDRAULIC UNIT, CONDUIT MEANS INTERCONNECTING SAID FIRST AND SECOND HYDRAULIC UNITS TO DELIVER FLUID THEREBETWEEN, EITHER OF SAID CONDUITS BEING CAPABLE OF BEING UNDER PRESSURE SO THAT TORQUE CAN BE TRANSMITTED IN EITHER DIRECTION FROM ONE HYDRAULIC UNIT OT THE OTHER; GEARING CONNECTING ONE OF SAID HYDRAULIC UNITS TO SAID CONTROL SHAFT TO CONTROL THE TORQUE OF SAID CONTROL GEAR, GEARING CONNECTING ONE OF SAID SHAFTS TO THE OTHER HYDRAULIC UNIT; A PREDETERMINED TORQUE PROGRAM, MEANS RESPONSIVE TO SAID PREDETERMINED TORQUE PROGRAM AFTER SAID GENERATOR CONNECTIBLE SHAFT HAS ATTAINED A PREDETERMINED SPEED FOR CONTROLLING ONE OF SAID DISPLACEMENT VARYING MEANS TO CONTROL THE TORQUE DELIVERED BY THE ENGINE CONNECTIBLE SHAFT; AND MEANS RESPONSIVE TO ROTATION OF THE GENERATOR CONNECTIBLE SHAFT WHEN DRIVEN BY THE ENGINE CONNECTIBLE SHAFT FOR CONTROLLING SAID ONE DISPLACEMENT VARYING MEANS TO MAINTAIN THE GENERATOR CONNECTIBLE SHAFT AT CONSTANT SPEED.