Patents by Inventor Edward J. Dickson

Edward J. Dickson 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).

  • Tape cassette rewinding machine
    Patent number: 4632335
    Abstract: The invention is a machine for receiving a tape cassette, the tape of which has been wound on the take up reel of the cassette. The cassette has a clutch that must be released before the tape can be rewound.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: December 30, 1986
    Inventors: Edward J. Dickson, Richard J. Armstrong
  • Tape cassette with clutch assembly
    Patent number: 4512535
    Abstract: A tape cassette having a body and two reels rotatable with respect to the body, one of the reels having a roller clutch between it and the body, the roller clutch having rollers, a ring extending around the rollers, and a roller cage, the rollers being contained in channels with a ramp surface formed in the roller cage, the rollers having a wedging surface adapted to wedge between the ramp surface and a ring to prevent rotation of the reel in one direction but permit rotation in the other direction, the rollers being adjustable to remove them from operative relation with the ring whereby to free the reel for rotation in either direction.
    Type: Grant
    Filed: March 21, 1984
    Date of Patent: April 23, 1985
    Assignee: Edward John Dickson
    Inventors: Edward J. Dickson, Richard J. Armstrong