US Patent 7234388 Liner retention system
Patent 7234388 was granted and assigned to Helmerich & Payne on June, 2007 by the United States Patent and Trademark Office.
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A liner retention system for a reciprocating pump having a piston and a piston rod operating in a cavity of a frame. The system includes a cylindrical liner for the piston and piston rod, the liner having a radially extending external shoulder. A liner clamp plate has a central opening receivable over the liner and a plurality of stud apertures. A plurality of studs extends from the frame, each stud terminating in a threaded end spaced from a module block. At least one compression sleeve has an inside diameter larger than an external diameter of the stud. Tensioner mechanism secures each stud to the liner clamp plate to thereby secure the cylindrical liner to the module block.
US Patent 07234388 Liner retention system US Patent 7234388 Liner retention system
US Patent 07234388 Liner retention system
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