| 摘要 |
The herein Tiedown Device includes an anchor stud which is particularly adapted for anchoring a serving cart, for instance, in an aircraft; the anchor stud is of substantially "T" shaped cross section which has a hollow stem and a head so that certain spaced anchor members on a cart can ride under and engage the head and thereby anchor the cart in position; a housing is secured in the floor, and a block is held in place by a diametrical crosspin; the hollow stem slides between the periphery of the block and the inner periphery of the housing and has therein a pair of longitudinal slots which ride on the crosspin; suitable stop is provided for limiting the outward movement of the hollow stem, thereby predetermining the distance to which the head of the anchor stud projects above the housing; a coil spring between the block and a shoulder in the hollow stem urges the hollow stem outwardly of the housing; a catch is spring-pressed into position to engage the crosspin to hold the stud in retracted position; and means are provided in the head of the anchor stud whereby the catch can be released from the crosspin at will so as to allow the coil spring to move the anchor stud out of the housing into anchoring position.
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