Switching arrangements for fluid amplifiers

Claim 1

FLUID CONTROL APPARATUS TO WHICH PRESSURIZED FLUID IS ADAPTED TO BE SUPPLIED COMPRISING: A HOUSING HAVING A PAIR OF TRANSMISSION CHANNELS FORMED THEREIN FOR SAID FLUID; EACH OF SAID TRANSMISSION CHANNELS COMPRISING A SIDE WALL AND AN OUTLET PORT; AN INLET PORT SPACED FROM THE OUTLET PORTS FOR DIRECTING FLUID TOWARD SAID TRANSMISSION CHANNELS; MEANS TO DIVERT SAID FLUID FROM ONE OF SAID TRANSMISSION CHANNELS TO THE OTHER OF SAID TRANSMISSION CHANNELS; SAID MEANS TO DIVERT COMPRISING A PAIR OF TRANSVERSELY EXTENDING AND SPACED CONTROL PASSAGEWAYS IN SAID HOUSING DISPOSED ON OPPOSITE SIDES OF SAID TRANSMISSION CHANNELS BETWEEN SAID INLET PORT AND SAID OUTLET PORTS; SAID CONTROL PASSAGEWAYS HAVING TRANSVERSELY SPACED END PORTS WITHIN SAID HOUSING DISPOSED ON OPPOSITE SIDES AND OUTWARDLY OF SAID TRANSMISSION CHANNELS; MEANS TO SELECTIVELY OPEN AND CLOSE SAID END PORTS COMPRISING A GENERALLY THIN U-SHAPED VALVING MEMBER MOUNTED FOR SLIDING MOVEMENT WITHIN SAID HOUSING IN A DIRECTION GENERALLY NORMAL TO SAID CONTROL PASSAGEWAYS; SAID VALVING MEMBER HAVING A PAIR OF TRANSVERSELY SPACED ARMS MOUNTED WITHIN SAID HOUSING AND EXTENDING ON OPPOSITE SIDES OF SAID TRANSMISSION CHANNELS IN A DIRECTION TRANSVERSE TO SAID CONTROL PASSAGEWAYS IN GENERALLY BLOCKING RELATION WITH RESPECT TO SAID END PORTS OF SAID CONTROL PASSAGEWAYS; A VALVING APERTURE IN EACH OF SAID ARMS WHICH IN ONE RELATED POSITION OF SAID VALVING MEMBER IS ADAPTED TO COMMUNICATE WITH THE END PORT OF THE CONTROL PASSAGEWAY ASSOCIATED THEREWITH; SAID VALVING MEMBER HAVING A TRUNK PORTION INTERCONNECTING SAID SPACED ARMS AND EXTENDIONG FROM SAID HOUSING; AND MEANS CONNECTED WITH SAID TRUNK PORTION FOR MOVING SAID VALVING MEMBER BETWEEN VALVING POSITIONS.