| 摘要 |
<p>KEY CARD RECEIVER A key card receiver has a key card slideway facial insert and upper and lower body halves. The insert has a tapered guideuay and a flat slideway with opposite parallel walls and side walls which extend perpendicularly from the guideway walls. Abutments are connected to he side walls, and the abutments include elongated hooks which extend around pedestals of the upper and lower body halves and lugs which extend into recesses in a jack in the lower body half. The upper and lower body halves are joined together by pedestals which have complementary knobs and depressions. Larger pedestals have aligned openings for mounting. A front vestibule formed between the body halves receives the key card slideway insert, and a rear chamber provides space for mouting an electronic circuit for converting identification data on the card to a pulse train.</p> |
