Mode changeover mechanism with flat cam surface for a tape playe

Details Mode changeover mechanism with flat cam surface for a tape playe Mode changeover mechanism with flat cam surface for a tape playe

1989-10-19

1991-04-02

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 963, 360 90, 242200, G11B 5008, G11B 554

Patent

active

050050940

ABSTRACT:
A mode changeover mechanism for changing over the operating mode of a tape player having a magnetic head for recording signals on a magnetic tape contained in a tape cassette loaded on the tape player and reproducing signals recorded on the magnetic tape. The mode changeover mechanism comprises a base plate mounted with the magnetic head and capable of moving toward the magnetic tape to bring the magnetic head into contact with the magnetic tape and away from the magnetic tape to separate the magnetic head from the magnetic tape, a spring biasing the base plate away from the magnetic tape to separate the magnetic head from the magnetic tape, a changeover cam for moving the base plate toward the magnetic tape against the resilience of the spring, and a motor for driving the changeover cam for rotation. The changeover cam has flat cam surfaces respectively for stably holding the base plate at a position for holding the magnetic head in contact with the magnetic tape and stably holding the base plate at a position for holding the magnetic head separated from the magnetic tape. When in action, the flat cam surfaces of the changeover cam are in plane contact with a portion of the base plate to hold the base plate stably in place.

REFERENCES:
patent: 4399475 (1983-08-01), Shimomae
patent: 4470087 (1984-09-01), Sakamoto et al.
patent: 4612589 (1986-09-01), Sakane
patent: 4819891 (1989-04-01), Kamijo
patent: 4922357 (1990-05-01), Komatsu et al.

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