| 摘要 |
<p>Card controlling device for locking, alarm and similar units comprising a supporting block effective to be inserted into a box-like portion of a frame and a reciprocating drawer member, effective to reciprocate along a sliding seat as formed in the block. The movable drawer member is provided with a central slot effective to receive a key card for opening a snap device. From opposite sides with respect to the central slot, the movable drawer member and supporting block include a plurality of coaxially extending holes some thereof resiliently house a pin and a counterpin. As the key card is introduced into the slot, the pins and counterpins are located in such a way that the adjacent surfaces thereof are coplanarily located with respect to the sliding surfaces of the movable drawer member, thereby releasing this latter and allowing for it to slide in the block.</p> |
