Mechanism for preventing erroneous mounting and dismounting of m

Details Mechanism for preventing erroneous mounting and dismounting of m Mechanism for preventing erroneous mounting and dismounting of m

1987-09-28

1988-09-27

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235492, G06K 706

Patent

active

047743999

ABSTRACT:
A mechanism prevents a memory card from erroneous mounting and dismounting on and from an apparatus having a card insertion hole and performing a predetermined processing on memory unit of the card when the card is mounted into the hole to a predetermined position. The mechanism comprises a memory card provided with a recess, and an engagement member movable between a projecting position, at which the member is projected in a locus of movement of the card from an inlet of the hole to the predetermined position, and a retracted position, at which the member is spaced apart from the locus. The engagement member is interlocked with an operation switch for a circuit for performing a predetermined process to the memory unit, so that the member is brought to the projecting position when the switch is turned on and to the retracted position when the switch is turned off.

REFERENCES:
patent: 4717817 (1988-01-01), Grassl et al.

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