Patents by Inventor Ralph W. Reinker

Ralph W. Reinker 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).

  • Fail-safe limit switch stopping system for air motor
    Patent number: 3943714
    Abstract: A valving arrangement for a winch motor powered by air or other pneumatic uid. The valving arrangement includes normally closed valves in the working fluid lines which are held open by air in the pilot fluid lines. In the event of a rupture or break in the pilot line, a normally closed valve is allowed to close, thereby stopping the winch and preventing it from overrunning its travel limits.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: March 16, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Ralph W. Reinker