Protected switch unit for cassette tape recorder

Details Protected switch unit for cassette tape recorder Protected switch unit for cassette tape recorder

1986-03-31

1987-10-27

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Actuated concurrently with operation or use of art device

200 11DA, 200 11G, 2003021, 360137, H01H 904, H01H 2108, G11B 100

Patent

active

047031387

ABSTRACT:
A protected switch unit is provided in a cassette tape recorder employing a single motor for driving a power transmission system for transferring a cassette holder and a power transmission system for loading and unloading the tape of the cassette loaded on the cassette tape recorder. The protected switch controls the motor for sequential cassette inserting operation and tape loading operation and for sequential tape unloading operation and cassette ejecting operation. A protective member for protecting the switch unit from dust is interposed between a circuit board having stationary contact terminals and a machine element of the power transmission system, carrying a movable contact terminal so as to seal the switch unit from dust.

REFERENCES:
patent: 3277739 (1966-10-01), Morse
patent: 3586797 (1971-06-01), Gerhardt et al.
patent: 3702383 (1972-11-01), Inaga et al.
patent: 3819886 (1974-06-01), Homan
patent: 4206334 (1980-06-01), La Rock

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