Transmission controls

Claim 1

IN A TRANSMISSION MECHANISM, THE COMBINATION OF A DRIVE SHAFT, A DRIVEN SHAFT, GEARING INTERCONNECTING SAID SHAFTS, A PLURALITY OF FLUID ACTUATABLE DEVICES SELECTIVELY ACTUATABLE TO ESTABLISH DIFFERENT DRIVE TRAINS BETWEEN SAID SHAFTS, A SOURCE OF FLUID PRESSURE, A SELECTOR VALVE CONNECTED TO SAID SOURCE OF PRESSURE AND SAID DEVICES ADAPTED TO SELECTIVELY ACTUATE SAID DEVICES, SAID SELECTOR VALVE INCLUDING MEANS TO REGULATE THE FLUID PRESSURE FROM SAID SOURCE, SAID MEANS INCLUDING A SLEEVE MEMBER HAVING A CLOSED END, A PISTON SLIDABLY MOUNTED WITHIN SAID SLEEVE MEMBERS, MEANS OPERATIVE IN RESPONSE TO MOVEMENT OF SAID PISTON AND MOVABLE THEREIN TO REGULATE SAID FLUID PRESSURE, SAID PISTON HAVING A PAIR OF LANDS OF DIFFERENT AREA THEREON, A BORE LOCATED IN SIAD SLEEVE MEMBER SAID BORE NORMALLY BEING OPEN TO ALLOW FLUID TO PASS THERETHROUGH FROM SAID CLOSED END, ONE OF OF SAID LANDS ON SAID PISTON BEING ADAPTED TO BLOCK SAID BORE TO TRAP FLUID WITHIN SAID CLOSED END AND PREVENT SAID PISTON FROM CONTACTING SAID CLOSED END WHEN SAID PISTON IS MOVING TOWARD SAID CLOSED END AS THE FLUID PRESSURE IS BEING REGULATED AND TO THEREBY QUIET SAID REGULATING MEANS AS SAID FLUID PRESSURE IS BEING REGULATED.