Pressure potentiometer arrangement

Claim 1

A PRESSURE POTENTIOMETER ARRANGEMENT FOR PRODUCING ELECTRICAL INDICATIONS OF CHANGE OF AMBIENT PRESSURE TO ABOVE OR BELOW A SELECTABLE REFERENCE PRESSURE EQUAL TO THE AMBIENT PRESSURE AT A REMOTE LOCALITY AT A DETERMINABLE TIME, SAID ARRANGEMENT COMPRISING: FIRST MEANS, INCLUDING MEANS PROVIDING FIRST AND SECOND SEALED CHAMBERS AND A SEPARATING MEANS INCLUDING AN ELASTIC FLUID-TIGHT PRESSURE-SENSITIVE CELL SEPARATING SAID CHAMBERS EACH FROM THE OTHER AND THE INTERIOR OF SAID CELL COMMUNICATING WITH ONE OF SAID CHAMBERS AND THE EXTERIOR OF SAID CELL COMMUNICATING WITH THE OTHER OF SAID CHAMBERS, AND MEANS PROVIDING ACCESS OF THE AMBIENT FLUID INTO ONE OF SAID CHAMBERS WHEREBY TO BRING THE PRESSURE IN THAT ONE OF SAID CHAMBERS TO AMBIENT PRESSURE, AND ONE PORTION OF SAID CELL BEING FIXED AND STATIONARY RELATIVE TO OTHER OF SAID FIRST MEANS AND A SECOND PORTION OF SAID CELL BEING FREE TO MOVE ALONG A LINE OF MOVEMENT INCIDENT TO EXPANSION AND CONTRACTION OF THE CELL; SECOND MEANS, INCLUDING POTENTIOMETER CONNECTIONS AND FIRST AND SECOND POTENTIOMETER COMPONENTS COMPRISING A RESISTANCE ELEMENT AND A WIPER CONTACT, A FIRST OF SAID POTENTIOMETER COMPONENTS BEING FIXED TO SAID SECOND PORTION OF SAID CELL TO MOVE THEREWITH ALONG A LINEAR PATH, AND THE SECOND OF SAID POTENTIOMETER COMPONENTS BEING AFFIXED TO SAID FIRST MEANS TO REMAIN STATIONARY THEREWITH, SAID RESISTANCE ELEMENT HAVING A LINEAR EXPOSED CONTACT ZONE ALONG SAID LINEAR PATH AND IN CONTACT WITH SAID WIPER CONTACT, WHEREBY INCIDENT TO EXPANSION AND CONTRACTION OF SAID CELL THE RESISTANCE EXHIBITED BETWEEN EITHER END OF SAID ELEMENT AND SAID CONTACT IS VARIED; THIRD MEANS, INCLUDING A VALVE COMMUNICATING WITH SAID FIRST AND SECOND CHAMBERS AND OPERABLE TO OPEN AND CLOSE A PASSAGE THEREBETWEEN; AND FOURTH MENAS, INCLUDING STEPPING-MOTOR AND CAM MEANS RESPONSIVE TO RECEIVED ELECTRIC PULSE SIGNALS TO OPERATE SAID VALVE TO ALTERNATELY OPEN AND CLOSE SAID VALVE, WHEREBY BY APPROPRIATE REMOTELY INITIATED SIGNALS TO SAID MOTOR THE PRESSURES IN SAID FIRST AND SECOND CHAMBERS BY BE EQUALIZED.