Patents by Inventor George E. Landrigan

George E. Landrigan 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).

  • Method for testing hydraulic releases
    Patent number: 4430884
    Abstract: A method testing a marine hydraulic release of the type used to secure life rafts and the like to ships comprising placing the hydraulic release on a tension stand and applying tension to it to approximate service conditions, characterized in that the method further comprises placing a load cell in direct line with the hydraulic release on the tension stand, the load cell being connected to a tension indicating device, and gradually increasing the tension on the hydraulic release unit by a desired level as determined by the load cell output on the indicating device, thereafter release testing the tensioned hydraulic release unit under superatmospheric air pressure and tension approximating actual service conditions while the hydraulic release and load cell remain undisturbed and under tension.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: February 14, 1984
    Assignee: Landrigan Corporation
    Inventor: George E. Landrigan
  • Method and apparatus for testing hydraulic releases
    Patent number: 4018079
    Abstract: A method of testing a Hydraulic Release and a test appliance therefor using elevated air pressure.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: April 19, 1977
    Assignee: Landrigan Corporation
    Inventor: George E. Landrigan