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Tools for disassembling universal joints

  • US 5,163,210 A
  • Filed: 06/17/1983
  • Issued: 11/17/1992
  • Est. Priority Date: 06/17/1983
  • Status: Expired due to Fees
First Claim
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1. A tool for disassembly of a universal joint, said universal joint comprising first and second yoke members, said first yoke member having a journal bearing mounted in a given end portion thereof, said tool comprising:

  • pulling means connectable to said second yoke member for exerting a pulling force on said second yoke member during disassembly;

    standoff means connectable to said given end portion of said first yoke member for exerting a pushing force, opposite to said pulling force, on the given end portion of the first yoke member during disassembly; and

    operating means interposed between said pulling means and said standoff means for operating on said pulling means to cause said pulling means to exert said pulling force on said second yoke member, and for operating on said standoff means to cause said standoff means to exert said pushing force on the given end portion of the first yoke member, whereby to force the journal bearing mounted in said given end portion of said first yoke member out of said given end portion of said first yoke member;

    wherein said operating means comprises a cylinder connected to said standoff means and a piston operating on said pulling means, said piston being movable within said cylinder in a direction away from the universal joint in response to the injection of fluid under high pressure into the cylinder so as to urge said pulling means in a direction away from the universal joint; and

    wherein said cylinder is in the form of a cylindrical shell formed around a cylindrical axis of said cylinder, said cylindrical shell having built-up portions running parallel to the cylindrical axis, and wherein at least two boreholes are provided along the length of the cylinder within said built-up portions of said cylindrical shell, said standoff means comprising at least two standoff studs, each being insertable into a respective one of said at least two boreholes; and

    wherein said pulling means comprises a headplate positioned against said piston, and a pair of sidebars, a given end of each of said sidebars being connected to said headplate, and a distal end of each of said sidebars being connected to a respective end portion of said second yoke member; and

    wherein said headplate has a recessed portion in a bottom surface of said headplate facing said piston, in which recessed portion said piston is positioned for pushing against said headplate and in a direction away from the universal joint during the disassembly operation, said recessed portion acting to preclude lateral movement of said piston during operation of said tool.

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