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:
Nov. 10, 1992
Filed:
Jul. 18, 1991
Douglas N Datema, Bettendorf, IA (US);
Thomas R Nurnberg, Bettendorf, IA (US);
Richard D Rohret, East Moline, IL (US);
Montgomery Electric Company, Moline, IL (US);
Abstract
A guide mechanism for a passenger conveyor which includes a series of passenger platforms supported on and movable along a frame which has a support track for support rollers mounted on the platforms. The guide mechanism includes a monotrack guide rail, and a pair of horizontal pinch rollers supported by each passenger platform. The pinch rollers are in engagement with opposite sides of the monotrack guide rail. One of the pinch rollers is of a lower compression stiffness than the other pinch roller. The guide mechanism is coupled to a walking beam assembly wherein a pair of support rollers are mounted at opposite ends of a beam extending in the direction of movement of the conveyor, and the guide rail mechanism is coupled to the beam between the pair of support rollers.