Patent ID: 8042367
Filing Date: 2011-10-25
Classification: B60R,E05B,G07C,Y10T

Abstract:
1. A tumbler-type key verification system comprising: a tumbler-type key having a code pattern region including an array of one or more recessed portions and one or more non-recessed portions that expresses a key code of the tumbler-type key, wherein the tumbler-type key includes a plurality of holes that are located at a position spaced from the code pattern region and do not express the key code of the tumbler-type key; and a lock apparatus into which the tumbler-type key is insertable, the lock apparatus including: wherein the tumbler-type key verification system 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 tumbler-type key verification system further comprising at least one lock mechanism for reinforcing the locking strength of the tumblers, the at least one lock mechanism including: when the tumbler-type key, which is an authorized key, is inserted into the lock apparatus, the distal ends of the first lock piece is partially accommodated in the corresponding lock piece accommodation recess and the shear line between the first and second pieces of the first lock piece is aligned with the shear line between the support member and the movable member while the distal ends of the second lock piece is not accommodated in the corresponding lock piece accommodation recess and the shear line between the first and second pieces of the second lock piece is aligned with the shear line between the support member and the movable member.