Other

Kokusan Parts Industry Co., Ltd.

Takeshi Wakuda

Takashi Suzuki

Takahiko Sugiura

Koichi Hatamura

Hiroyuki Ogino

Keisuke Umehara

Masahisa Kumashiro

Yasuyuki Okudaira

Reiji Mahigashi

A metal gasket capable of preventing the occurrence of cracks in a stopper while employing a wave-shaped stopper, improving the contact pressure balance around the bead to enhance the engine performance, and improving the durability of the stopper. The metal gasket is constituted by a gasket component sheet having an opening formed to face a combustion chamber, and the gasket component sheet is provided with a combustion chamber bead surrounding the opening. An inner circumference side stopper lower than the height of the combustion chamber bead is formed along the combustion chamber bead in a portion between the combustion chamber bead and the opening such that at least a section of each wave where stress amplitude is large becomes thin, a thin portion and a thick portion are arranged alternately in each wave, and the hardness of the thin portion is higher than that of the thick portion.

Metal gasket

Growing community of inventors

Katano, Japan

Takeshi Wakuda