Toyota Jidosha Kogyo Kabushiki Kaisha

Toyoda Koki Kabushiki Kaisha

Hiroki Yamauchi

Katsutoshi Kitagawa

Masayoshi Takagi

Yukio Hoshino

Shigeru Shimizu

A compact machine tool for automatically interchanging two gang heads mounted at the front end of a machining unit. The machine tool includes a horizontally movable tool support, a revolving body mounted above the tool support and rotatable about a first horizontal axis, a tiltable body capable of angularly moving about a second horizontal axis perpendicular to the first horizontal axis, and a gang head magazine. The revolving body is so rotated as to interchange the two gang heads respectively placed in an upper position and a lower position. The magazine has a rotary body for moving plural gang heads within a horizontal plane so that they may be successively placed in a front position.

Machine tool with gang head interchange device

A valve drive device for an internal combustion engine characterized in a movably pivoted rocker arm, at either a cam-contacting part or a valve stem-contacting part thereof, having installed therein a built-in oil pressure tappet for automatically absorbing a gap created at such contacting part. Between the oil pressure tappet and the cam or the valve stem, in contact with the oil pressure tappet, a movable plate is provided, having a curved surface where the movable plate and/or the oil pressure tappet contact each other, thereby lubricating the contacting part to prevent its abrasion.

Valve drive device for an internal combustion engine

A canister and the manufacturing process therefor, for a catalyst converter for prevention of attrition of the catalyst by rounding of the inside corners of the gas inlet and outlet in the canister holding a pellet catalyst.

Growing community of inventors

Kariya, Japan

Hiroki Yamauchi