Nichias Corporation

Yumex Corporation

Kokubu Indusrial Co., Ltd.

Hideaki Shimamoto

Michio Fujino

Shigeru Morita

Kazuya Tominaga

Katsumi Tateiwa

Yasuhiko Fukumoto

Masaki Kawada

Kenji Tamaoki

Hideaki Madono

Youzi Hamazaki

Takashi Yasuda

Syuuichi Ishiwa

A structure of an exhaust manifold branch collecting portion includes a double collecting pipefor collecting a plurality of exhaust openingsA,A. The double collecting pipeis comprised of an inner pipe-and an outer pipe-, which are connected integrally to each other. In a space formed between the inner pipe-, the outer pipe-, and a ring-shaped stainless steel cushion member-, a tubular cushion member-, which is thermally expanded and foamed, is arranged as a restricted cushion structure.

Structure of an exhaust manifold branch collecting portion

A spiral gasket apparatus, capable of being held on an inclined flue gas outflow pipe without falling off therefrom, is constructed by winding a metal hoop member and a filler member, superposed on each other. A part of the hoop member from the beginning extremity of the hoop member on the inner side, which is wound as many as several turns to a welded fixed portion thereof, is raised inward by using the welded fixed portion as a fulcrum. An extremity portion thereof is folded back to form a superposition part. Since the raised part of the hoop member acts as a spring and is brought elastically into contact with an inclined flue gas outflow pipe, the gasket is held on the flue gas outflow pipe.

Spiral gasket having a centering spring

Growing community of inventors

Hiroshima, Japan

Hideaki Shimamoto