Patents by Inventor Robert E. McGarvey

Robert E. McGarvey 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).

  • Hydraulic safety valve base
    Patent number: 3965919
    Abstract: The present invention relates to a safety valve for use with a hydraulic system as is utilized in raising loads such as with a front-end loader, a fork truck, snorkel truck, and the like. The safety valve provides a spring actuated plunger which acts to trap hydraulic fluid within a hydraulic cylinder to retain a load in its raised position in the event a hydraulic feed line or the like should break.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: June 29, 1976
    Inventors: Robert E. McGarvey, Donald L. Gitthens