Patents by Inventor Stanley Rubinstein

Stanley Rubinstein 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).

  • Quick release wheelchair attachment bracket
    Patent number: 5127709
    Abstract: A bracket to easily fasten detachable parts such as seats and backs to a wheelchair with J-shaped hooks or brackets that partially encircle the wheelchair frame tubes. A separate clamp assembly is more permanently clamped to the tube adjacent to each J-bracket. A swing arm pivoted on each clamp assembly is rotated into a position over the encircling portion of the J-bracket so as to both trap the bracket against the clamp and against the tube. Quick release and reattachment is achieved simply by rotating the swing arms off or on the J-hooks.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: July 7, 1992
    Assignee: Freedom Designs, Inc.
    Inventors: Stanley Rubinstein, Terry D. Robuck
  • Magnetic paper clamp
    Patent number: 4673306
    Abstract: A paper clamp is provided for a computer printer in which the paper is continuously clamped while the paper is advanced and printed. In one embodiment, a clamp magnet is positioned on one side of the paper path opposite a clamp plate on the other side of the paper path. The paper is clamped by the magnetic attraction between the clamp magnet and clamp plate.
    Type: Grant
    Filed: July 11, 1984
    Date of Patent: June 16, 1987
    Assignee: Dataproducts Corporation
    Inventors: Stanley Rubinstein, Stephen B. Baker