Patents by Inventor Steven E. Christensen

Steven E. Christensen 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).

  • Jet propulsion system for spa or jetted bath using control of air draw to venturi jets with a three-way air control valve
    Patent number: 6968581
    Abstract: A air selection control valve and assembly capable of controlling the flow of air into a water conduit to accelerate, decelerate, or pulse the rate of water flowing in combination with a hot tub spa assembly is described. The control of the air inlet is controlled to control the pulsing of water. An innovative multi-way control valve system can be controlled by as few as a single solenoid for pulsing some or all of the jets of a standard hot tub spa.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: November 29, 2005
    Inventor: Steven E. Christensen
  • Jet propulsion system for spa or jetted bath using control of air draw to Venturi jets with a three-way air control valve
    Patent number: 6859953
    Abstract: A air selection control valve and assembly capable of controlling the flow of air into a water conduit to accelerate, decelerate, or pulse the rate of water flowing in combination with a hot tub spa assembly is described. This invention makes use of the control of the air inlet to control the pulsing of water. This invention also describes an innovative multi-way control valve system that can be controlled by as few as a single solenoid for pulsing some or all of the jets of a standard hot tub spa.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: March 1, 2005
    Inventor: Steven E. Christensen