Kitz Corporation

Sumitomo Construction Machinery Co., Ltd.

Tetsuya Watanabe

Mitsuru Hosokawa

Osamu Watanabe

Masazumi Funato

Hisashi Shimizu

Kazuaki Hagiwara

Hideki Takayama

A valve () of an embodiment of the present invention has a tapered section () on an opening side of a depression () of a body (). When a projection () of a ball () is inserted into the depression (), a part of a tip end edge of the projection () is brought into contact with the tapered section (), and the tapered section () guides the projection () so that the entire circumference of the tip end edge of the projection () is located on a bottom side with respect to the tapered section ().

Valve, and method for manufacturing said valve

An asphalt finisher includes a tractor, a hopper disposed in front of the tractor and configured to receive a pavement material, a conveyor configured to convey the pavement material in the hopper to a rear side of the tractor, a screw configured to spread the pavement material conveyed by the conveyor at the rear side of the tractor, a screed configured to compact the pavement material spread by the screw at a rear side of the screw, an information acquisition device configured to obtain information on a road to be paved, and a control device. The control device is configured to support an operation of aligning the center of the tractor with the center of a pavement target area based on the information obtained by the information acquisition device.

Asphalt finisher

A valve () in accordance with an embodiment of the present invention includes a body () having a space in which a stem () and a ball () are housed, wherein an inner lid body () fixing the ball () in the space liquid-tightly partitions the space into a part in which the stem () is housed and a part in which the ball () is housed.

Valve

A cryogenic globe valve that prevents a high sealing property and safety from being lost even through a large number of times of opening and closing for a cryogenic fluid and is easily maintained, although it has a simple structure. The cryogenic globe valve has an axial cylindrical portion as a long-neck structure extended to its body, in which a resin-made valve disk having a conical surface having a reduced-diameter tapered shape is attached to a lower end of an elongated stem such that the resin-made valve disk is three-dimensionally operable with respect to the stem even under an extremely low-temperature condition.

Cryogenic globe valve

A trunnion ball valve includes a ball provided inside a body main unit in a freely rotatable manner; and a seal mechanism provided on positions on both sides of the ball so as to be in seal contact with the ball, the seal mechanism including: a seat retainer having a sealing surface that is to be in seal contact with a ball surface of the ball; a spring member provided for applying elastic force on a sealing surface side; and a sealing member provided on an outer surface of the seat retainer.

Growing community of inventors

Yamanashi, Japan

Tetsuya Watanabe