The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2000
Filed:
Oct. 22, 1997
Yi Sug Kwon, Kyongsangnam-Do, KR;
LG Industrial Systems Co., Ltd., Seoul, KR;
Abstract
A passenger conveyor provided with a drive motor, a drive sprocket coupled to a shaft of the drive motor, a drive terminal gear coaxially engaged to the drive sprocket, a step chain driven by meshing with the drive terminal gear, a step connected to the step chain and having front and rear wheel rollers, and an upper rail for guiding the front wheel roller so that the step chain meshes smoothly with the drive terminal gear, wherein the upper rail comprising a straight section formed in a straight; an arched section formed extendly from an end of the straight section, wherein the starting end of the arched section coincides with or goes beyond a perpendicular center: line of the terminal gear; a distance from an upper surface of the straight section to a circumferencial surface of the terminal gear is shorter than a radius of the front wheel roller.