Fluid pressure detection

Claim 1

A DEVICE FOR MEASURING OF LONG AMPLITUDES TO FLUID PRESSURE VARIATIONS COMPRISING A RIGID HOUSING, A FIRST CHAMBER AND A SECOND CHAMBER WITHIN THE HOUSING A DEFORMABLE CONTAINER WITHIN SAID FIRST CHAMBER AND MOUNTED IN SEALING RELATION THEREIN, A PASSAGE COMMUNICATING SAID SECOND CHAMBER WITH THE INTERIOR OF THE CONTAINER, A FLUID FILLING THE SPACE WITHIN THE FIRST CHAMBER OUTWARDLY OF THE CONTAINER, ANOTHER FLUID-TIGHT DEFORMABLE CONTAINER OUTWARDLY OF THE HOUSING AND FILLED WITH A FLUID, MEANS COMMUNICATING THE INTERIOR OF SAID OTHER CONTAINER WITH THE INTERIOR OF THE FIRST CHAMBER OUTWARDLY OF THE CONTAINER THEREIN, VALVE MEANS WITHIN SAID COMMUNICATING MEANS FOR ESTABLISHING COMMUNICATION BETWEEN THE OTHER CONTAINER AND THE FIRST CHAMBER WHEN IN OPEN POSITION AND FOR SEALING SAID OTHER CONTAINER FROM THE FIRST CHAMBER WHEN IN CLOSED POSITION WHEREBY THE PRESSURE CONDITIONS EXISTING IN THE FIRST CHAMBER MAY BE ADJUSTED FOR STABILIZATION IN ACCORDANCE WITH THE DEPTH OF THE DEVICE AND WHEREIN SUCH STABILIZED ADJUSTMENT CAN BE RETAINED IN THE FIRST CHAMBER WHEN THE VALVE MEANS IS IN CLOSED POSITION, A FLEXIBLE MEMBER SUBDIVIDING THE SECOND CHAMBER INTO AN INNER COMPARTMENT IN COMMUNICATION WITH THE CONTAINER AND AN OUTER COMPARTMENT, A FLUID FILLING SAID OUTER COMPARTMENT, A SEMIPERMEABLE DAMPENING MEANS INTERPOSED BETWEEN SAID OUTER COMPARTMENT AND THE FLUID THE PRESSURE OF WHICH IS TO BE MEASURED FOR TRANSMISSION OF PRESSURE CHANGE FROM THE FLUID OUTSIDE OF THE HOUSING TO THE FLEXIBLE MEMBER, AND A VIBRATING STRING EXTENSOMETER HAVING ONE END CONNECTED TO SAID FLEXIBLE MEMBER WHILE THE OTHER END IS CONNECTED TO SAID HOUSING WHEREBY MOVEMENTS OF THE FLEXIBLE MEMBER RESPONSIVE TO PRESSURE CHANGE WILL RESULT IN VARIATIONS IN TENSION IN SAID EXTENSOMETER.

Claim 2

A DEVICE FOR MEASURING OF LONG AMPLITUDES TO FLUID PRESSURE VARIATIONS COMPRISING A RIGID HOUSING, A FIRST CHAMBER AND A SECOND CHAMBER WITHIN THE HOUSING A DEFORMABLE CONTAINER WITHIN SAID FIRST CHAMBER AND MOUNTED IN SEALING RELATION THEREIN, A PASSAGE COMMUNICATING SAID SECOND CHAMBER WITH THE INTERIOR OF THE CONTAINER, A FLUID FILLING THE SPACE WITHIN THE FIRST CHAMBER OUTWARDLY OF THE CONTAINER, ANOTHER FLUID-TIGHT DEFORMABLE CONTAINER OUTWARDLY OF THE HOUSING AND FILLED WITH A FLUID, MEANS COMMUNICATING THE INTERIOR OF SAID OTHER CONTAINER WITH THE INTERIOR OF THE FIRST CHAMBER OUTWARDLY OF THE CONTAINER THEREIN, VALVE MEANS WITHIN SAID COMMUNICATING MEANS FOR ESTABLISHING COMMUNICATION BETWEEN THE OTHER CONTAINER AND THE FIRST CHAMBER WHEN IN OPEN POSITION AND FOR SEALING SAID OTHER CONTAINER FROM THE FIRST CHAMBER WHEN IN CLOSED POSITION WHEREBY THE PRESSURE CONDITIONS EXISTING IN THE FIRST CHAMBER MAY BE ADJUSTED FOR STABILIZATION IN ACCORDANCE WITH THE DEPTH OF THE DEVICE AND WHEREIN SUCH STABILIZED ADJUSTMENT CAN BE RETAINED IN THE FIRST CHAMBER WHEN THE VALVE MEANS IS IN CLOSED POSITION, A FLEXIBLE MEMBER SUBDIVIDING THE SECOND CHAMBER INTO AN INNER COMPARTMENT IN COMMUNICATION WITH THE CONTAINER AND AN OUTER COMPARTMENT, A FLUID FILLING SAID OUTER COMPARTMENT, A SEMIPERMEABLE DAMPENING MEANS INTERPOSED BETWEEN SAID OUTER COMPARTMENT AND THE FLUID THE PRESSURE OF WHICH IS TO BE MEASURED FOR TRANSMISSION OF PRESSURE CHANGE FROM THE FLUID OUTSIDE OF THE HOUSING TO THE FLEXIBLE MEMBER, AND A VIBRATING STRING EXTENSOMETER HAVING ONE END CONNECTED TO SAID FLEXIBLE MEMBER WHILE THE OTHER END IS CONNECTED TO SAID HOUSING WHEREBY MOVEMENTS OF THE FLEXIBLE MEMBER RESPONSIVE TO PRESSURE CHANGE WILL RESULT IN VARIATIONS IN TENSION IN SAID EXTENSOMETER.