Patents by Inventor W. Sidney Park

W. Sidney Park 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: 4416466
    Abstract: A trailer hitch guide is disclosed for guiding a ball, attached at the rear of an automobile or other towing vehicle, into a position of alignment directly under a socket on a trailer tongue of a trailer or other towed vehicle, the tongue being attached to the top surface of the trailer hitch guide. A v-flange on the bottom surface of the guide guides the ball into the position of alignment. Once the ball is in this position, the trailer hitch guide is removed in order to drop the socket of the trailer tongue over the towing ball.
    Type: Grant
    Filed: May 5, 1981
    Date of Patent: November 22, 1983
    Inventor: W. Sidney Park
  • Patent number: 4099279
    Abstract: A boat launching and recovery guide structure is provided in which a pair of parallel guide rails are fixed by means of pivots to a rigid front bolster on the main frame of a boat trailer and extend backward to form sliding interconnections with a floating rear bolster mounted on a floating frame of the trailer, the floating frame being pivoted intermediate the front and rear extremities of the main frame and the sliding interconnections acting to compensate for the change in geometry caused by floation of the floating frame on the surface of the water into which a boat is being launched or from which it is being recovered. This structure provides strength and rigidity permitting a wide latitude of angles of entry into the trailer of a boat being recovered from the water.
    Type: Grant
    Filed: July 26, 1977
    Date of Patent: July 11, 1978
    Inventor: W. Sidney Park