Cylinder piston rod coupler

Claim 1

An improvement in a coupling for misaligned shafts having a housing adapted to be attached to one of said shafts and a stud with an enlarged curved end portion attached to the other one of said shafts with the enlarged end portion of the stud movably caged in said housing between guide members therein by a retaining ring, the improvement comprising means for sealing said housing with respect to said other one of said shafts and secondary means forming slippery surfaces on said guide members and on said stud, said housing having a threaded socket in one side wall and an opening oppositely thereto, said guide members in said housing engaging the opposite sides of said enlarged curved end of said stud, said guide members having curved surfaces matching said opposite sides of said enlarged curved end of said stud, a retaining ring engaged in said opening in said housing, one side of said retaining ring having a first annular surface and a second annular surface spaced radially and sidewardly of said first annular surface, said retaining ring being engaged in said opening with said second annular surface engaging one of said guide members so as to hold said guide members with said curved end of said stud between said guide members, said stud extending through said retaining ring, said means for sealing said housing comprising a resilient sealing gland on said stud spaced with respect to said enlarged curved end of said stud and movably engaged between said first annular surface of said retaining ring and one of said guide members so as to be movable transversely of said housing with said stud.