Fluid pressure servomotor

Claim 1

A SERVOMOTOR COMPRISING: A HOUSING HAVING TWO PORTIONS ADAPTED TO BE JOINED TOGETHER; A SPACER ARRANGED BETWEEN THE TWO PORTIONS OF SAID HOUSING, SAID SPACER HAVING A SERRATED BEARING SURFACE ON ONE EDGE AND A NARROW LIP PROJECTING FROM A STEPPED SHOULDER ON ANOTHER EDGE OF SAID SPACER; A FIRST FLEXIBLE MEANS HAVING A PERIPHERAL BEAD PLACED BETWEEN THE SERRATED EDGE OF SAID SPACER AND ONE OF SAID PORTIONS OF THE HOUSING; A SECOND FLEXIBLE MEANS HAVING AN ANNULAR GROOVE IN A PERIPHERALLY THICKENED PORTION THEREOF ARRANGED TO RECEIVE THE LIP PORTION OF SAID SPACER, SAID PERIPHERALLY THICKENED PORTION HAVING A RADIALLY PROJECTING BULBOUS PORTION AT AN END THEREOF WHICH IS ARRANGED TO ABUT THE STEPPED SHOULDER OF SAID SPACER; AN ANNULAR DIAPHRAGM RETAINER SURROUNDING SAID PERIPHERALLY THICKENED PORTION OF SAID SECOND FLEXIBLE MEANS TO COMPRESS SAID BULBOUS PORTION THEREOF AND HOLD SAID SECOND MEANS TO SAID SPACER, SAID DIAPHRAGM RETAINING HAVING AN EDGE ABUTTING SAID STEPPED SHOULDER OF SAID SPACER AND ANOTHER EDGE HAVING ANGULARLY DISPOSED SPRING FINGER PROJECTIONS AFFIXED THERETO WITH OPENINGS THEREBETWEEN WHICH PROJECTIONS BEAR ON THE OTHER PORTION OF SAID HOUSING OPPOSITE THAT ON WHICH THE PERIPHERAL BEAD OF SAID FIRST FLEXIBLE MEANS BEARS.