Patents Assigned to Elder, Inc.
  • Wireline set tubing retrievable seal bore packer apparatus
    Patent number: 4565247
    Abstract: A retrievable subsurface well conduit engaging apparatus having releasable engaging means which are movable outwardly to engage a well conduit and which may be released by up and down movement of an operating means. Locking means maintains the well conduit engaging means in engagement with the well conduit until the operating means is moved upwardly which releases a coupling means from the locking means and allows disengagement of the apparatus.
    Type: Grant
    Filed: February 3, 1984
    Date of Patent: January 21, 1986
    Assignee: Elder, Inc.
    Inventors: William T. Tapp, William M. Roberts