Patents by Inventor Robert Dingley

Robert Dingley 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).

  • Low cost wheelchair
    Patent number: 5560627
    Abstract: A low-cost wheelchair that is formed from side members made from continuous, bent single pieces of tubing that is formed to create a loop, and crimped at the juncture where the loop is formed. An axle is mounted at the juncture of each loop, and a large rear wheel is mounted on each axle.
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: October 1, 1996
    Assignee: Guardian Products, Inc.
    Inventors: Leonid Zatulovsky, Curtis A. Robinson, Sr., Robert W. Renolds, Jr., Robert Dingley, David St. George