Electronic memory device

Details Electronic memory device Electronic memory device

1984-03-01

1986-07-15

McQuade, John

Geometrical instruments

339 36, H01R 13453

Patent

active

046002570

ABSTRACT:
An electronic apparatus having thereon an external connection device in a freely detachable manner to effect electrical connection with the electrical apparatus which is constructed with an opening and closing device provided on the external connection device and performing opening and closing of a connecting part to realize the electrical connection with the electronic apparatus; a closing device provided on the external connection device and to render the opening and closing device to be in a closed state with respect to the connecting part; and a releasing device provided on the electronic apparatus and to release the opening and closing device from its closed state to render it to be in an open state, when the external connection device is mounted on the electronic apparatus, thereby exposing the connecting part.

REFERENCES:
patent: 2225623 (1940-12-01), Crawford
patent: 2552061 (1951-05-01), Popp
patent: 3068442 (1962-12-01), Kubik et al.
patent: 4057167 (1977-11-01), Lee
patent: 4119813 (1978-10-01), Sato

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