Other

Shigeo Chiba

Yoshio Watanuki

Tetsuyuki Tsukano

Masaki Tamura

A lock apparatus which can be locked or unlocked by an electronic key or mechanical key, includes a cylinder casing, a sleeve disposed rotatably inside the cylinder casing, a key cylinder disposed rotatably inside the sleeve and in which a mechanical key can be inserted, a tumbler disposed on the key cylinder and which the mechanical key can engage, a key cylinder lock actuator for locking or unlocking a rotation of the sleeve with respect to the cylinder casing and a control unit disposed on the key cylinder side for carrying out transmission and reception of electronic signal for verifying IDs. When, as a result of the ID verification, the ID of the control unit and the ID of the electronic key coincide with each other, the rotation of the sleeve with respects to the cylinder casing is released. Also, when the tumbler engages the sleeve, the key cylinder is rotatable with the sleeve by operating a key cylinder operating portion.

Growing community of inventors

Tokyo, Japan

Shigeo Chiba