Patents Assigned to David H. Rubenstein
  • Limited play tape cassette system
    Patent number: 4802048
    Abstract: An assembly added to a conventional VHS cassette provides a wheel for counting the number of plays, or replays of segments of more than a predetermined length, and preventing further replay after the last authorized play by either releasing a spring biased arm to carry an erase head against the tape, or locking the cassette brakes in the engaged position once the cassette is removed form the tape deck.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: January 31, 1989
    Assignees: David H. Rubenstein, Rodger D. Nicholson
    Inventors: Leland M. Perkins, Ralph L. Dodds, David H. Rubenstein, Roger D. Nicholson