Patents by Inventor Gerald P. Herbert

Gerald P. Herbert 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).

  • Flow valve installation and removal apparatus
    Patent number: 4031954
    Abstract: An apparatus for installing and removing flow valve in a well tubing having a plurality of valve receiving side pockets offset from the main bore of the tubing by providing an orientation sleeve with a first slot for directing a guide key of a valve handling apparatus in the sleeve and a second slot intersecting the first slot to assist in removal of debris from the first slot with spaced aligned shoulders in the sleeve at the intersection of the first and second slots for actuation of the valve handling apparatus. The valve handling apparatus includes a support body including an elongated cylindrical body member supporting a movable body comprising an elongated plunger telescopically and nonrotatably arranged in the support body.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: June 28, 1977
    Assignee: Production Specialties, Inc.
    Inventors: Gerald P. Herbert, Ferdinand M. McGinn, Hugh D. Embree