Patents by Inventor Walter E. Jorgensen

Walter E. Jorgensen 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 control valve
    Patent number: 4694848
    Abstract: A direct acting flow control valve operative by an actuator responsive to fluid pressure from an external source. The actuator includes a pair of spaced apart pistons and associated rolling diaphragms which define an actuator chamber into which the fluid pressure is admitted, and a separate leakage chamber into which fluid will pass on leaking through a defective diaphragm, the leakage chamber being adapted for communication with an external indicator, shutoff valve or the like.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: September 22, 1987
    Inventors: Walter E. Jorgensen, Robert L. Linquist