Patents by Inventor Todd A. Krahl

Todd A. Krahl 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).

  • Railway car outlet gate assembly with inertial latch
    Patent number: 6012397
    Abstract: An outlet gate assembly for a hopper type railway car includes a frame adapted to be mounted on an outlet opening in the rail car and a gate in the frame. A conventional rack and pinion opening and closing drive moves the gate between open and closed positions on the frame. An inertial latch mechanism latches the gate in the fully closed position. Actuation of the opening and closing drive displaces the latch to automatically unlatch the gate. Upon impact, an inertial mass generates a latching force holding the latch closed and preventing opening of the gate.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: January 11, 2000
    Assignee: Keystone Industries, Inc.
    Inventors: Todd A. Krahl, Anthony L. Lucas, Allen D. Smith