发明名称 |
Limited play tape cassette system |
摘要 |
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.
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申请公布号 |
US4802048(A) |
申请公布日期 |
1989.01.31 |
申请号 |
US19860926368 |
申请日期 |
1986.10.31 |
申请人 |
RUBENSTEIN, DAVID H.;NICHOLSON, RODGER D. |
发明人 |
PERKINS, LELAND M.;DODDS, RALPH L.;RUBENSTEIN, DAVID H.;NICHOLSON, ROGER D. |
分类号 |
G11B15/02;G11B23/087;G11B23/28;G11B23/42;(IPC1-7):G11B15/32;G11B23/04 |
主分类号 |
G11B15/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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