Mirai Industry Co., Ltd.

Tosetz Co., Ltd.

Tokyo Gas Living Engineering Co., Ltd.

Nortiz Corporation

Living Engineering Co., Ltd.

Hirokazu Kawamura

Kiyomi Kanamoto

Hironao Matsunaga

Takanori Nagano

Takahide Hasegawa

Masaki Sugatani

Shohei Matsuda

Yasuhide Satoh

Norikazu Maki

Yasuhide Sato

A conduit made of a synthetic resin, having an inner surface and an outer surface, having concave portions and convex portions alternately and continuously provided in the length direction. The conduit is bendable. The conduit includes outer wall parts extending with a first width in the length direction; inner wall parts positioned radially inside relative to the outer wall parts and extending with a second width in the length direction; and side wall parts joining the outer wall parts and the inner wall parts so that the outer wall parts and the inner wall parts are alternately and continuously provided in the length direction. The outer surfaces of the outer wall parts each have, at both ends in the length direction, protruding parts, which protrude in the radial direction.

Conduit and hot water supply system

Exhaust pipe for water heater

Exhaust pipe cover for water heater

A pipe joint includes: a joint main body with a receiving opening for a pipe; an axially-movable tube-shaped body mounted to the receiving opening; and a retaining ring closely arranged to an outer surface of the pipe for preventing the pipe from detaching, wherein the joint main body includes a receiving portion for receiving the retaining ring, and a tapered portion for radially shrinking the retaining ring, wherein the tube-shaped body is arranged to move between a first position where the retaining ring is allowed to move into the tapered portion, and a second position where the retaining ring is blocked from tapered portion, and wherein the pipe joint is configured such that the pipe can be inserted into the receiving opening when the tube-shaped body is either position, that in the first position the pipe is not detachable, and that in the second position the pipe is detachable.

Pipe joint and pipe equipped with pipe joint

Growing community of inventors

Anpachi-gun, Japan

Hirokazu Kawamura