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. 17, 2001
Filed:
Jan. 13, 2000
Robert Ulrich, Bruckneudorf, AT;
Inventio AG, Hergiswil, CH;
Abstract
An apparatus for exchanging roller bearings of escalator and moving walkway chainwheel sub-assemblies includes the provision of auxiliary supports to which the chainwheel sub-assembly can be fixed. With removal of axle carriers the central axle becomes accessible, and can be displaced laterally to disengage from one of the roller bearings, which is subsequently removed and replaced. The central axle is then displaced in the opposite direction to allow access to an opposite roller bearing. Auxiliary centering for the axle in an axle cylinder is provided to prevent shifting of the axle within the cylinder when the axle carriers are removed. The steps of fixing the chainwheel sub-assembly to the auxiliary supports and subsequently shifting the axle to free the bearings constitute a method for bearing removal which does not require disassembly of the escalator/walkway conveying run and allows the escalator or walkway to be walked on during the exchange process.