Electromagnetic control device for tape recorder

Details Electromagnetic control device for tape recorder Electromagnetic control device for tape recorder

1982-12-13

1986-04-29

Wolff, John H.

Dynamic magnetic information storage or retrieval

Miscellaneous

360 90, G11B 1500

Patent

active

045861030

ABSTRACT:
A movable element is attracted and displaced by an electromagnet against the resilience of a return spring to change a tape recorder from stoppage state into operation state. When the element is returned to its original position by the magnet, it moves so as to change the tape recorder from stoppage state into operation state. The return spring is so selected as to exert a force stonger than the attractive force, which acts on the movable element by the residual magnetism of the electromagnet, whereby the return of the element is achieved with certainty.
In a case where a tape recorder is supplied with electric power from commercial power, when the supply of such power is cut off due to an accident, such as power failure, while the tape recorder is in use, a combination of a cam and a spring enables automatic restoration of the tape recorder to stoppage state.

REFERENCES:
patent: 4184185 (1980-01-01), Yakame
patent: 4370686 (1983-01-01), Katoh et al.
patent: 4491887 (1985-01-01), Sato

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