Fluid centering and sensing devices

Claim 1

A FLUID SYSTEM FOR CHECKING THE ALIGNMENT AND INTEGRITY OF CENTER MEANS PRESENTING A TAPERED FACE ON THE END OF A WORKPIECE TO BE MOUNTED ON A MACHINE TOOL OR THE LIKE WHERE CENTERING IS REQUIRED, COMPRISING A SENSOR MEMBER HAVING AN END FACE INCLUDING AT LEAST A TAPERED PORTION FOR ENGAGING THE CORRESPONDING TAPERED FACE ON SAID CENTER MEANS, MEANS FOR POSITIONING SAID TAPERED PORTION AGAINST SAID TAPERED FACE OF SAID CENTER MEANS OF SAID WORKPIECE IN FACE-TO-FACE CONTACT TO NORMALLY FORM A SEAL, SAID SENSOR MEMBER BEING MOUNTED WITH ITS CENTER LINE EXTENDING ALONG AN AXIS CORRESPONDING TO THE AXIS ALONG WHICH SAID WORKPIECE IS TO BE CENTERED, A PASSAGE IN SAID SYSTEM EXTENDING THROUGH SAID SENSOR MEMBER AND OPENING AT THE SURFACE OF SAID END FACE OF SAID MEMBER FOR COMMUNICATION WITH SAID CENTER MEANS, FLUID SUPPLY MEANS FOR NORMALLY MAINTAINING FLUID IN SAID SYSTEM AT SUBSTANTIALLY CONSTANT PRESSURE, AND PRESSURE-RESPONSIVE MEANS TO DETECT THE PRESSURE IN SAID PASSAGE FOR DETERMINING THE LEAKAGE OF FLUID, IF ANY, PAST SAID SEAL FORMED BY SAID FACES WHEREBY THE MATING FIT OF SAID SENSOR MEMBER WITH SAID CENTER MEANS IS DETERMINED TO INDICATE THE ALIGNMENT AND INTEGRITY OF SAID CENTER MEANS.