Patents by Inventor Kenneth Havard

Kenneth Havard 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).

  • Seal apparatus for restriction of movement of sand in an oil well
    Patent number: 9004158
    Abstract: An apparatus for restricting movement of sand in an oil well has a production tubing, a working barrel positioned in the production tubing, a tubular member affixed an end of the working barrel, and a seal extending around the tubular member. The seal is of an elastic or an elastomeric material. The seal has an outer periphery contacting the inner diameter of the production tubing. The seal has a plurality of splits formed therethrough. Each of the splits has a generally V-shaped configuration.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: April 14, 2015
    Inventor: Kenneth Havard
  • Traveling valve for sucker rod pumps
    Patent number: 6746221
    Abstract: A traveling valve for use in a sucker rod pump having a cylindrical housing having an interior passageway and a tapered shoulder formed therein and a piston received within the interior passageway and slidable therein. The piston has a mechanically operated sliding shear seal positioned interior of the housing. The piston has a surface thereon generally conforming to a shape of the tapered shoulder in the interior passageway. Separate channels extend through the wall of the housing so as to communicate between the interior of the housing and the annulus of the tubing string.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: June 8, 2004
    Inventor: Kenneth Havard
  • Device for removing sand from pump plungers
    Patent number: 6145590
    Abstract: A sand removal apparatus for use with an oil pumping apparatus in which a first sand remover is attached between a valve rod and a plunger of the oil pumping apparatus and a second sand remover is attached to a bottom of the plunger within the working barrel of the oil pumping apparatus. The first sand remover has a body with an interior passageway extending longitudinally therethrough. The body has a first threaded end attached to the plunger cage associated with the valve rod of the oil pumping apparatus and a second threaded end attached to the plunger. A circumferential groove extends around the body between the ends. A wiper is positioned within the circumferential groove so as to have an edge extending outwardly of the groove so as to be in wiping contact with the working barrel. The second sand remover has a body with an interior passageway extending longitudinally therethrough and having a first threaded end attached to the bottom of the plunger.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: November 14, 2000
    Inventor: Kenneth Havard