Patents Represented by Attorney Arthur A. Calvin

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  • Method of making low cost accumulator
    Patent number: 4348792
    Abstract: The present invention is directed to a low cost accumulator device and the method of making the same. The device is fabricated by utilizing the shell or pressure vessel as a mold component wherein a bladder is molded in situ, the bladder being bonded in the course of the formation thereof to the interior of the vessel and preferably also to a valve member.
    Type: Grant
    Filed: November 18, 1980
    Date of Patent: September 14, 1982
    Assignee: Greer Hydraulics, Incorporated
    Inventor: Abduz Zahid