Patents by Inventor J. Hendren Lucas

J. Hendren Lucas 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: 5119087
    Abstract: A system for retrieving shopping carts at a store having a plurality of shopping carts is disclosed. The system includes a counter which can be preset to a first determined count. A target is mounted to each shopping cart while a sensor detects the return of each shopping cart to a designated area. As each shopping cart is returned to the designated area, the sensor generates an output pulse which changes the count in the counter. Whenever the count in the counter achieves a second predetermined count, an alarm is activated indicative that a prize is awarded to the person returning the shopping cart to the designated area.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: June 2, 1992
    Inventor: J. Hendren Lucas