HYDRAULIC STARTERS, I.E., ROTARY HYDRAULIC MOTORS ADAPTED TO ACCELERATE ENGINES TO PRESCRIBED SPEEDS AND WHICH INCORPORATE OVERRUNNING CLUTCHES AND MAY ALSO INCORPORATE ONE OR MORE OF THE FOLLOWING PARTS: GEAR BOXES, DISPLACEMENT CONTROLS, CUT-OUT SWITCHES AND FLOW CONTROL VALVES; HYDRAULIC STARTERPUMPS, I.E., HYDRAULIC UNITS ADAPTED TO BE BOTH A STARTER MOTOR AND A PUMP; HYDRAULIC MOTOR-PUMPS, I.E., ELECTRIC MOTORDRIVEN HYDRAULIC PUMPS; HYDRAULIC FLOW CONTROL VALVES USED FOR LIMITING THE RATE AT WHICH FLUID IS SUPPLIED TO HYDRAULIC STARTERS; AND HYDRAULIC STARTING SYSTEMS INCLUDING VARIOUS COMBINATIONS OF THE FOLLOWING COMPONENTS, SOME OF WHICH MAY BE ASSEMBLED ON A SELF-SUSTAINING FRAME OR IN AN ENCLOSURE: PUMPSSTARTERS, ACCUMULATORS, RESERVOIRS, VALVES, FILTERS, HEAT EXCHANGERS, HOSES, TUBES, FITTINGS, ELECTRICAL GENERATORS, ELECTRICAL CONTROLS, AND PRIME MOVERS-NAMELY, ELECTRIC MOTORS, GAS TURBINES, DIESEL ENGINES AND GASOLINE ENGINES, FOR DRIVING THE PUMPS AND GENERATORS