Patent ID: 7956741

Claim:
A tumbler-type lock apparatus for use with a tumbler-type key having a code pattern region including an array of one or more holes and one or more non-hole portions that expresses a key code of the tumbler-type key, the tumbler-type lock apparatus comprising: a support member; a movable member movable relative to the support member when the tumbler-type key is inserted into the tumbler-type lock apparatus; a plurality of tumblers arranged to extend in the support member and the movable member, the plurality of tumblers each corresponding to one of the one or more holes or one of one or more non-hole portions during insertion of the tumbler-type key; and a plurality of biasing members each biasing a corresponding one of the plurality of tumblers towards the movable member; wherein the tumbler-type lock apparatus performs verification of the tumbler-type key based on whether the plurality of tumblers are engaged with the support member and the movable member during insertion of the tumbler-type key; and the movable member or the support member includes an accommodation portion for accommodating a distal end of each tumbler that has passed through the corresponding hole of the tumbler-type key.