Patents by Inventor Ruben E. Chavez

Ruben E. Chavez 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).

  • Wheelchair tray slidable coin drawer
    Patent number: 4867506
    Abstract: A tray for a wheelchair adapted for persons having reduced grasping strength. The tray supports a drawer for holding currency, especially coins. The bottom of the drawer is curved to allow removal of coins by sliding movement up the side of the drawer without grasping the coin.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: September 19, 1989
    Inventor: Ruben E. Chavez