Patents by Inventor Eddie J. Hamm

Eddie J. Hamm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4592380
    Abstract: A gas lift valve having a bellows protecting valve and seat in which one of the bellows protecting valve and seat is constructed of polyimide material and a sleeve of polyimide material internal of the bellows protecting the bellows against distortion and wear.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: June 3, 1986
    Assignee: Otis Engineering Corporation
    Inventor: Eddie J. Hamm
  • Patent number: 4379488
    Abstract: An improved latch device for releasably locking in a recess in a well flow conductor. The latch is attachable to a well tool which may be positioned and operated to latch and lock in and later be retrieved from the flow conductor using wireline or TFL pumpdown tools and methods. An expandable c-ring is utilized as the latching element for the latch device.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: April 12, 1983
    Assignee: Otis Engineering Corporation
    Inventor: Eddie J. Hamm