Patents by Inventor Alexander R. Little

Alexander R. Little 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).

  • Door brake
    Patent number: 5613308
    Abstract: A door brake assembly (20) to control the closing of a dipper door (11) on a shovel dipper (10) has a torsion bar (39) connected to the dipper door (11) by links (15, 32). A lever (48) on the other end of the torsion bar (39) selectively engages spaced snubbers (57, 58) to provide a braking (or damping) action to the dipper door (11) in the last portion of its travel to the open or closed position. The torsion bar (39) is mounted in journals (23, 24, 43, 44) on a base (22) mounted on the dipper (10). Usually, each dipper door (11) is provided with a pair of the brake assemblies (20) mounted in mirror image.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: March 25, 1997
    Assignee: Marlene J. Little
    Inventor: Alexander R. Little