Integral retained file protect means

Details Integral retained file protect means Integral retained file protect means

1976-08-09

1977-12-13

Lucas, Jay P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

G11B 1504

Patent

active

040632920

ABSTRACT:
A tape reel adapted for use with a tape recorder/reproducer having control means operable to inhibit destruction of information on the tape by recording over previous information, includes a flange defining a tape cavity of the reel and a retaining wall extending axially of the flange. A lockout ring having portions defining an L-shaped cross section is configured to be removably retained by the retaining wall in a first position and a second position. A plunger assembly associated with the recorder/reproducer detects the position of the lockout ring to inhibit the record/erase electronics when the ring is in the first position. A detent assembly maintains the plunger in spaced relationship with the lockout ring in both the first and second positions to reduce the noise associated with the recording and the reproducing of the tape.

REFERENCES:
patent: 3199091 (1965-08-01), Barkhuff
patent: 3199093 (1965-08-01), Cheney
patent: 3772662 (1973-11-01), Blair
patent: 3777074 (1973-12-01), Olmsted

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