Hitachi, Ltd.

Kyozo Yoshioka

Yuji Yoshitomi

Hideaki Kamohara

Kiyoshi Fujiwara

Kazuhiro Makino

Shoji Yoshinaga

Hiroshi Higaki

Katsuaki Nagatomo

Minoru Imamura

Hiromasa Fukumori

Syuzo Uno

Hiroshi Nomura

Shigenobu Hisatomi

A girder for supporting a movable body has a truss structure of a cross-sectional shape forming an isosceles triangle with a horizontal base. The truss structure is formed of three main tubes of a circular cross section that are located in positions corresponding to respective corners of the triangle and extend continuously over the length of the girder. A plurality of branch tubes of circular cross section are fixed at their ends to respective pairs of the main tubes by joint pieces, such that three branch tubes lie in a plane extending through the respective joint pieces perpendicular to the longitudinal axes of the main tubes so as to form the isosceles triangle. A rail support is secured to each main tube of the base of the isosceles triangle at a position disposed upwardly and outwardly of the center thereof, and a rail, along which the movable body is traversable, is supported on each rail support.

Truss-type girder for supporting a movable body

A centrifugal counterflow type contactor wherein the interior space of a drum carried by a rotating shaft has a predetermined axial width or the interior space of the drum is divided by at least one baffle plate mounted on the rotating shaft into at least two chambers each having a predetermined width; and a light liquid is introduced into said interior space or each chamber at positions adjacent to the radially outward end thereof while a heavy liquid is introduced into said interior space or each chamber at positions adjacent to the radially inward end thereof so that rapid rotation of the drum causes the radial counterflow contact between the light and heavy liquids. The extraction efficiency is equal to or higher than that of a corresponding prior art centrifugal contactor, and the solids in the liquids may be prevented from being accumulated in the counterflow region.

Centrifugal counterflow type contactor

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Hikari, Japan

Kyozo Yoshioka