Sankyo Kinzoku Co., Ltd.

Kawasaki Motors, Ltd.

Tomoe System Inc.

Keiichi Araki

Daisuke Saeki

Sadao Yamakage

Kazuhiro Suzuki

Daisuke Takahashi

A fuel tank cap includes: a cap body which opens and closes a fuel supply port of a fuel tank; a ring member which is disposed around the fuel supply port and is shaped so as to surround the cap body; and a hinge member which is coupled to the ring member to support the cap body in a turnable manner between a closed position and an open position. A first peripheral part of the ring member, which is opposed to an outer periphery of the cap body, has a larger dimension in a circumferential direction than a dimension of a second peripheral part of the hinge member, which is opposed to the outer periphery of the cap body. The ring member and the hinge member are made of mutually different materials.

Fuel tank cap

A lock device () is used with a flat key (K) having asymmetric opposite edges (). The lock device () includes a key rotor () which is configured to have distances from a central axis line (O) of the key (K) to abutment points of the edges () against the tumbler (-) respectively, and the distances are set so as to equal each other such that the non-reversible key is capable of reversible use in an inserted state of the key (K) into a key insertion hole ().

Lock kit and key rotor housed in rotor case

Growing community of inventors

Nagoya, Japan

Keiichi Araki