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:
Jul. 21, 1992
Filed:
Sep. 09, 1991
Gerald E Johnson, Farmington, CT (US);
James A Rivera, Bristol, CT (US);
Frank M Sansevero, Farmington, CT (US);
Dat Nguyen, New Britain, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
A moving handrail on an escalator or the like is driven by pairs of rollers which form a nip through which the handrail moves. The rollers are eccentrically mounted so as to automatically tighten the nip in response to resistance to movement of the handrail. The roller or rollers which contact the underside of the handrail are rotatably driven by power sprockets, while the roller or rollers contacting the outer or exposed surface of the handrail are idler rollers which are not rotated by the power sprockets so as to lessen scuffing of the exposed surface of the handrail by the rollers.