Control device

Claim 1

A CONTROL VALVE COMPRISING, A HOUSING HAVING AN ELONGATED BORE THEREIN WITH A PORTION EXTENDING AXIALLY FROM ONE END THEREOF BEING OF A LARGER CROSS SECTION THAN THE REMAINING AXIAL PORTION, SAID HOUSING HAVING A CHAMBER THEREIN EXTENDING LATERALLY OUTWARDLY FROM SAID AXIAL PORTION OF THE LARGER CROSS SECTION, AN ELONGATED PLUNGER RECIPROCABLY RECEIVED WITHIN SAID BORE HAVING PORTIONS CLOSELY RECEIVED LATERALLY WITHIN SAID AXIAL PORTIONS RESPECTIVELY, SAID PLUNGER HAVING AN INTEGRAL OUTWARDLY EXTENDING PORTION CLOSELY RECEIVED WITHIN SAID CHAMBER, PASSAGEWAYS IN SAID HOUSING CONNECTED TO AXIALLY OPPOSED PORTIONS OF SAID CHAMBER WHEREBY SAID PLUNGER IS MOVABLE INTO ONE OF TWO AXIALLY SPACED OPERATING POSITIONS, AN OPENING IN ONE OF SAID PORTIONS OF SAID PLUNGER CONNECTING A FIRST PASSAGEWAY IN SAID HOUSING TO AN EXIT PASSAGEWAY IN SAID HOUSING WHEN SAID PLUNGER IS IN ONE OPERATING POSITION, SAID OPENING CONNECTING ANOTHER PASSAGEWAY IN SAID HOUSING TO SAID EXIT PASSAGEWAY WHEN SAID PLUNGER IS IN THE OTHER OF SAID OPERATING POSITIONS, THE OTHER PORTION OF SAID PLUNGER ENGAGING SAID HOUSING TO SEAL SAID FIRST PASSAGEWAY FROM SAID ONE PORTION OF SAID PLUNGER WHEN SAID PLUNGER IS IN SAID OTHER POSITION, AND A PASSAGEWAY IN SAID OTHER PORTION OF SAID PLUNGER EXTENDING FROM SAID FIRST PASSAGEWAY TO THE OUTER END OF SAID OTHER PORTION OF SAID PLUNGER FOR EACH OPERATING POSITION OF SAID PLUNGER.