Patents by Inventor Kenneth A. Olson

Kenneth A. Olson 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).

  • Apparatus for exhausting combustion gases from a gas water heater
    Patent number: 4856982
    Abstract: The present invention includes an exhaust fan for exhausting combustion gases from a gas fired water heater, a gas pressure diaphragm switch for operating the exhaust fan in response to fuel flowing to the burner of the water heater, and a safety device for preventing fuel flow to the burner upon detecting undesirable changes in combustion gases. The apparatus further includes a time delay to continue operation of the exhaust fan and exhaust residual combustion gases for a short time after fuel flow to the burner has ceased. In one form the time delay is a time delay relay switch and in another form it is a flow restricting orifice that restricts the flow of fuel from the gas pressure diaphragm switch, thereby maintaining a closed circuit to the exhaust fan.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: August 15, 1989
    Assignee: Tjernlund Products, Inc.
    Inventor: Kenneth A. Olson
  • Cap for tube type dispensers
    Patent number: D283982
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: May 27, 1986
    Inventor: Kenneth A. Olson
  • Cap for tube type dispensers
    Patent number: D305102
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: December 19, 1989
    Inventor: Kenneth A. Olson