Toshiba Elevator Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Nippon Kayaku Kabushiki Kaisha

Kazuhisa Hara

Takayuki Kikuchi

Yoshio Ogimura

Kenichi Fujii

Yoshinobu Ishikawa

Tadashi Munakata

Shigeo Nakagaki

Yoshifumi Ikeda

Hitoshi Kawamoto

Nobuhiko Teshima

Masaaki Hirai

Takeshi Nakanishi

Chieko Seno

Tomohiko Matsuura

Disclosed is a polymer conjugate of folic acid or a folic acid derivative, wherein an amide bond is not used. The compound has chemical stability and adequate drug release rate in the living organism. Specifically disclosed is a polymer conjugate of folic acid or a folic acid derivative, wherein a substituent represented by formula (I) is bonded to a carboxy group of a block copolymer which is composed of a polyethylene glycol and a polymer having a carboxy group in a side chain, or a pharmacologically acceptable salt thereof. 

Polymer conjugate of folic acid or folic acid derivative

A footstep guide rail () (rail body) is arranged so that a level H of a horizontal surface is set at the position obtained by adding a designated offset &#x3b4; to a tangential line L of a drive sprocket () and the footstep guide rail () is provided, at its one end on an introductory side of the drive sprocket (), with a curved part (). At a reference position closest to the drive sprocket (), the horizontal surface of the footstep guide rail () is changed to the curved part (). Consequently, it is possible to absorb velocity unevenness of one footstep roller approaching the drive sprocket ().

Conveyer apparatus

A mountainous or valley-shaped curved partis provided in a part of a footstep guide railfor guiding a movement of footstep rollerslinked by a footstep chain, the part being positioned in the vicinity of a drive sprocket. Consequently, owing to meshing of the footstep rollerswith the drive sprocket, an unevenness in velocity of the footstep rollersis absorbed by the curved part, so that a moving velocity of the footstep rollersmoving on the downstream of the curved partis maintained constantly, suppressing vibrating of the footsteps

Conveyer apparatus having footsteps

A passenger conveyer apparatus including a plurality of steps connected to each other in an endless loop, traveling on a forward path, a backward path and a pair of turning paths connecting between opposite ends of the forward path and the backward path. Each of the steps comprising a step tread and first and second guide rollers offset from each other in the traveling direction of the steps. The apparatus also includes a forward rail configured to guide the first and the second guide rollers in the forward path, a backward rail configured to guide the first and the second guide rollers in the backward path, and a pair of turning rails having a curving rail formed in an arc, configured to guide the second guide roller in the turning paths. At least one of the turning rails is formed in a manner such that a line segment drawn between an orbital center of a corresponding curving rail and a first center of the first guide roller makes an acute angle with a line segment drawn between the orbital center and a second center of the second guide roller, and a loci made by respective turning motions of front and rear edges of the step tread cross each other.

Passenger conveyer apparatus

Growing community of inventors

Tokyo, Japan

Kazuhisa Hara