Patents by Inventor Ralph E. Switzer

Ralph E. Switzer 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).

  • Valve for controlling a fluid pressure operated device
    Patent number: 4210065
    Abstract: A two position slide valve has an inlet port connected to a source of fluid under pressure and is configured so that in one position it will load the fluid into a pressure operated device and in the other position it will evacuate the loaded fluid from the device by passing the fluid from the source through a venturi which reduces the static pressure at the outlet port of the valve.
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: July 1, 1980
    Inventor: Ralph E. Switzer