Pressure switch having positive action reset means and adjustable length connection to diaphragm

Claim 1

A PRESSURE RESPONSIVE SWITCH MECHANISM COMPRISING, IN COMBINATION, A HOUSING, A DIAPHRAGM SEPARATING SAID HOUSING INTO A PRESSURE CHAMBER AND A SWITCH CHAMBER, SWITCH MEANS DISPOSED IN SAID SWITCH CHAMBER AND HAVING HIGH AND LOW PRESSURE OPERATING POSITIONS, MEANS FOR CONNECTING SAID PRESSURE CHAMBER TO A SOURCE OF PRESSURE SO THAT SAID DIAPHRAGM MOVES IN RESPONSE TO VARIATIONS IN PRESSURE IN SAID PRESSURE CHAMBER, AN ACTUATOR ASSEMBLY CONNECTING SAID SWITCH MEANS TO SAID DIAPHRAGM AND TRANSMITTING DIAPHRAGM MOVEMENT TO SAID SWITCH MEANS TO MOVE SAID SWITCH MEANS BETWEEN SAID HIGH AND LOW PRESSURE OPERATING POSITIONS, A HOLLOW, ELONGATED CARRIER DISPOSED WITH ITS LONGITUDINAL AXIS PARALLEL TO THE DIRECTION OF MOVEMENT OF SAID DIAPHRAGM AND HAVING ONE OF ITS LONGITUDINAL ENDS POSITIONED IN THE PATH OF MOVEMENT OF SAID ACTUATOR ASSEMBLY FOR ENGAGEMENT THEREBY, SAID CARRIER ALSO INCLUDING AN ADJUSTABLE SEAT PORTION EXTENDING TRANSVERSELY OF SAID LONGITUDINAL AXIS AND MEANS CONNECTING SAID ADJUSTABLE SEAT PORTION IN SAID CARRIER FOR MOVEMENT ALONG SAID LONGITUDINAL AXIS TO A PREDETERMINED FIXED POSITION IN SAID CARRIER, AN ELONGATED PIN MEMBER ARRANGED IN SAID CARRIER ALONG THE LONGITUDINAL AXIS THEREOF AND SUPPORTED FOR AXIAL MOVEMENT WITH RESPECT TO SAID CARRIER AND EXTENDING THROUGH SAID ONE LONGITUDINAL END OF SAID CARRIER FOR ENGAGEMENT WITH SAID ACTUATOR ASSEMBLY, SAID ACTUATOR ASSEMBLY INCLUDING A FIRST MEMBER FIXED TO SAID DIAPHRAGM AND HAVING A THREADED OPENING THEREIN AND A SECOND MEMBER THREADEDLY ENGAGED IN THE THREADED OPENING OF SAID FIRST MEMBER AND IN CLUDING A SEAT OPENING TOWARD SAID CARRIER AND HAVING SAID PIN MEMBER DISPOSED THEREIN, A RESET SPRING WITHIN SAID CARRIER HAVING ONE END SEATED ON SAID ADJUSTABLE SEAT PORTION AND EXTENDING THEREFROM TOWARD SAID DIAPHRAGM WITH ITS OPPOSITE END SEATED ON SAID PIN MEMBER TO BIAS SAID PIN MEMBER INTO ENGAGEMENT WITH SAID ACTUATOR ASSEMBLY AND TO OPPOSE MOVEMENT OF SAID ACTUATOR ASSEMBLY IN RESPONSE TO AN INCREASE IN PRESSURE IN SAID PRESSURE CHAMBER,