Patents by Inventor J. Marlis Williams

J. Marlis Williams 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: 5711110
    Abstract: A parking barrier permanently installed in vehicle parking surface, which has a base (20), with legs (22) embedded within the surface. A hinge plate (28) is attached to the base and allows the barrier to be rotated to a horizontal position permitting a vehicle to safely pass over the collapsed barrier. A channel shaped post (34) is pivotally attached to the hinge plate and a rigid strut (40) is retained on one end within the post and, on the other, to the hinge plate. The strut forms a right angle triangle with the post. A pull pin (46) holds the upper end of the strut in place and when removed, permits the barrier to be rotated horizontally removing the obstruction. A second, or electromechanical, embodiment utilizes a linear actuator (84) for the strut. An electronic controller (100) receives a signal through a coded radio frequency transmitter (102) and receiver (104) and, in turn, energizes the actuator to rotate the barrier into a horizontal position.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: January 27, 1998
    Inventor: J. Marlis Williams