| 摘要 |
Cylinder lock and key with a rotatable plug in a cylindrical housing has radial slots each with two tumblers spring biased in the same direction and provided with side extensions for engaging a supporting spring. The side extensions are oriented opposite each other, and in certain slots the tumblers are spring biased in one direction and in other slots the tumblers are spring biased in another direction. The tumblers have cord projections protruding into a key channel and engaging control paths. The tumblers in series in odd slots are spring biased in one direction and tumblers in even slots are spring biased in the opposite direction, whereby their cord projections protrude in a direction orthogonal to sliding motion of the tumblers so that the cord projections are in each slot, substantially against each other and their lateral control edges adjacent the side projections cooperate with the control paths formed on the adjacent side walls of the control grooves in the key. |
