Patents by Inventor Robert D. Knox

Robert D. Knox 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).

  • Patent number: 6588186
    Abstract: A hitch assembly includes two frame members. One frame member of the frame includes a locking assembly for coupling the hitch assembly to a shaft of a sulky. The other frame member of the frame is adapted to secure the frame assembly to a harness of an animal such as a horse. A release assembly such as a pull pin assembly is utilized to releasably secure the first frame member to the second frame member. A method for releasing an animal harness from a vehicle is also described.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: July 8, 2003
    Inventor: Robert D. Knox
  • Publication number: 20030009997
    Abstract: A hitch assembly includes two frame members. One frame member of the frame includes a locking assembly for coupling the hitch assembly to a shaft of a sulky. The other frame member of the frame is adapted to secure the frame assembly to a harness of an animal such as a horse. A release assembly such as a pull pin assembly is utilized to releasably secure the first frame member to the second frame member. A method for releasing an animal harness from a vehicle is also disclosed.
    Type: Application
    Filed: November 9, 2001
    Publication date: January 16, 2003
    Inventor: Robert D. Knox
  • Patent number: 4357177
    Abstract: An upright vacuum cleaner conversion and storage pedestal for receiving and supporting a vacuum cleaner and adapting the cleaner to flexible hose cleaning tasks is disclosed having a wheeled base or bed releasably fastenable to the bottom of the cleaner with a vacuum transmitting conduit in the base positionable in substantially airtight relation with the suction mouth of the cleaner and communicating with a coupler for joining a flexible air hose to the conduit so that the pedestal supported cleaner may be used in much the same manner as a conventional canister type cleaner. A leg may be pivotably supported beneath the base, movable between a stowed horizontal position and an extended position for supporting the cleaner and pedestal on a stairway with wheels of the base resting on one step surface and the leg resting on the next lower step surface so as to adapt the upright vacuum cleaner to vacuuming stairways and the like.
    Type: Grant
    Filed: April 16, 1981
    Date of Patent: November 2, 1982
    Inventor: Robert D. Knox