Patents by Inventor Andrew Imhof

Andrew Imhof 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).

  • INDEPENDENT RAIL TEST RELEASE MECHANISM
    Publication number: 20220177015
    Abstract: A test release mechanism for a railway switch machine includes a block structured to attach to a lock box in order to move in conjunction with the lock box and a lift pin structured to be operable to selectively engage and disengage the block with a slide bar.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 9, 2022
    Applicant: HITACHI RAIL STS USA, INC.
    Inventors: Andrew Imhof, Sheldon Adam Benton, Barrett Swygert, David F. Byrne, William A. Chisholm, JR., Kevin McQuistian