Patents by Inventor Joel Donohue

Joel Donohue 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).

  • Retaining mechanisms for threaded bodies in reciprocating pumps
    Patent number: 8529230
    Abstract: Novel retainers for a body threaded into a reciprocating pump used for pumping fluid into a well are provided for. They comprise one or more elastic members adapted to flex and allow the retainer to be interlocked with the pump and a member adapted to engage the threaded body and to limit loosening thereof. Preferably, the engagement member is biased into engagement with the threaded body, for example, by elastic, magnetic, or gravitational potential energy. The novel retainers include stops which limit loosening or tightening of the threaded body and pawls that limit loosening of the threaded body.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: September 10, 2013
    Assignee: Black Horse, LLC
    Inventors: E. Lee Colley, III, Joel Donohue, Larry M. Hill