Patents by Inventor Demetrius H. Hoose

Demetrius H. Hoose 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).

  • Rail car coupler interlock
    Patent number: 4391380
    Abstract: The invention pertains to a safety interlock for rail car couplers wherein a detent positioned by the rail car compressed air braking system prevents the rail car couplers from being unlocked as long as the rail car brake system is supplied with compressed air. An expansible motor operated detent functions to selectively permit or prevent translation of the coupler pin controlling pivoting of the coupler knuckle.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: July 5, 1983
    Inventor: Demetrius H. Hoose