Patents by Inventor Richard T. Parmley

Richard T. Parmley 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).

  • Expandable metal membrane
    Patent number: 3994693
    Abstract: An expandable metal membrane of the type used to contain cryogenic liquids is disclosed. The membrane utilizes two sets of triangular shaped corrugations at right angles to each other. The corrugations are arranged so that the membrane expands only along one axis at each intersection of the corrugations and the expansion of the membrane along two axes simultaneously is assisted by the rotation of the panel enclosed by each two sets of corrugations.
    Type: Grant
    Filed: December 5, 1973
    Date of Patent: November 30, 1976
    Assignee: Lockheed Missiles & Space Company, Inc.
    Inventor: Richard T. Parmley