Senju Sprinkler Company Limited

Ebara Corporation

Ebara Field Tech. Corporation

Kazuma Ito

Takahiro Tanaka

Tetsuro Sugiura

Katsuaki Usui

Hideo Arai

Yutaka Tateishi

Atsushi Oyama

Yasuhiro Niimura

Masaharu Chiba

Kazuyuki Tatsuta

Yoshiki Sasaki

Wei Zhang

Kazuki Kimoto

A cylindrical portion forms, at a first holding position, a first airflow path in which a communication portion open to a lower end of the body serves as a first introduction port for the outside air and in which a missing portion lacking a portion of a surrounding wall of the cylindrical portion serves as, by overlapping a slit open to an outer peripheral surface of the body, a first exit through which the outside air flowed in the body is discharged to above the ceiling, and forms, at a second holding position, a second airflow path in which a gap formed between an escutcheon and a heat collector projecting from the lower end of the body serves as a second introduction port for the outside air and in which the missing portion serves as a second exit through which the outside air is discharged to above the ceiling.

Sprinkler head

Deflector for sprinkler head

A highly reliable combined bearing capable of achieving equal and sufficient lubrication of a plurality of roller bearings with a simple and compact structure is provided. The combined bearing includes a first roller bearing and a second roller bearing which are in contact with each other and arranged on the same axis. A lubricating oil inlet introduces a lubricating oil into an inner space formed between the first roller bearing and the second roller bearing, the lubricating-oil inlet being provided on at least one of an outer ring of the first rolling bearing and an outer ring of the second rolling bearing.

Combined bearing and rotary machine

Unit bearing

Growing community of inventors

Tokyo, Japan

Kazuma Ito