Hydromechanical remote indication and memory apparatus

Claim 1

HYDROMECHANICAL APPARATUS OF THE CHARACTER DESCRIBED COMPRISING: (A) FLUID CONDUCTING MEANS INCLUDING FIRST AND SECOND ORIFICES CONNECTED IN SERIES WITH A CHAMBER THEREBETWEEN SO THAT FLUID FLOWING AT A REGULATED PRESSURE THROUGH SAID ORIFICES ESTABLISHES A PRESSURE IN SAID CHAMBER RELATED TO THE RATIO OF ORIFICE AREAS; (B) PRESSURE RESPONSIVE MEANS POSITIONABLE BY FLUID PRESSURE ACTION ON OPPOSITE SIDES THEREOF TO CHANGE THE SIZE OF ONE OF SAID ORIFICES; (C) FLUID CONDUCTING MEANS FOR APPLYING A REFERENCE PRESSURE TO ONE SIDE OF SAID PRESSURE RESPONSIVE MEANS; (D) FLUID CONDUCTING MEANS PROVIDING COMMUNICATION BETWEEN SAID CHAMBER AND THE OTHER SIDE OF SAID PRESSURE RESPONSIVE MEANS; (E) WHEREBY SAID PRESSURE RESPONSIVE MEANS IS POSITIONED TO REGULATE SAID ONE ORIFICE SO THAT PRESSURE IN SAID CHAMBER CORRESPONDS TO SAID REFERENCE PRESSURE, AND (F) MEANS FOR SELECTIVELY CONTROLLING SAID COMMUNICATION BETWEEN SAID CHAMBER AND THE OTHER SIDE OF SAID PRESSURE RESPONSIVE MEANS SO THAT BY SELECTIVELY CUTTING OFF SAID COMMUNICATION, THE PRESSURE IN SAID CHAMBER AT ANY MOMENT, CORRESPONDING TO SAID REFERENCE PRESSURE, MAY BE MAINTAINED.