Lxllow lever transducer

Claim 1

A FORCE TRANSDUCER INCLUDING A MANUALLY OPERABLE CONTROLLER HAVING A LOAD LEVER WITH A HOLLOW END PORTION, A BALANCED MEMBER WITH NARROWLY RESTRICTED UNIVERSAL MOTION IN RELATION TO THE LEVER CONNECTED BY A SWIVEL JOINT WITHIN THE HOLLOW END PORTION OF THE LEVER HAVING AN END WITH A HAND GRIP EXTENDING EXTERIORLY OF THE HOLLOW END PORTION OF THE LEVER TO ONE SIDE OF THE SWIVEL JOINT AND AN END WITH A COUNTERWEIGHT CONNECTED TO THE MEMBER WITHIN THE HOLLOW END PORTION OF THE LEVER TO THE OTHER SIDE OF THE SWIVEL JOINT; A SEALED, SELF-BALANCING HYDRAULIC SYSTEM WITHIN THE HOLLOW END PORTION OF THE LEVER HAVING OPPOSITELY PAIRED COMPRESSIBLE CAPSULES COOPERATIVELY ENGAGED BETWEEN THE INSIDE WALL OF THE HOLLOW END PORTION OF THE LEVER AND THE MEMBER TO CENTER THE MEMBER IN RELATION TO THE LEVER IN TEH ABSENCE OF A MANUAL FORCE ON THE HAND GRIP OF THE MEMBER AND PROVIDE A DIFFERENTIAL PRESSURE OUTPUT DEPENDING ON THE MANUAL FORCE EXERTED ON THE HAND GRIP TO MOVE THE MEMBER FROM ITS CENTER POSITION, SERVO MEANS HAVING DIFFERENTIALLY MOVABLE OUTPUT COMPONENTS, AND FLUID LINES CONNECTING THE RESPECTIVE OUTPUT COMPONENTS OF THE SERVO MEANS AND THE PAIRED CAPSULES; AND ELECTRICAL PICK-OFF MEANS HAVING PARTS WITHIN THE HOLLOW END PORTION OF THE LEVER FIXED TO THE LEVER AND OPERATIVE PARTS CONNECTED TO THE RESPECTIVE OUTPUT CONPONENTS OF THE SERVO MEANS OF THE HYDRAULIC SYSTEM.