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:
Jun. 01, 1993
Filed:
Nov. 27, 1991
Mikko Sissala, Hyvinkaa, FI;
Peter Evans, Yowie Bay, AU;
Kone Elevator GmbH, Baar, CH;
Abstract
The present invention relates to a procedure for checking the straightness of elevator guide rails and straightening deflections of the rails, and an apparatus for implementing the procedure. The elevator guide rails are inspected by means of a measuring apparatus movable along the rail, which apparatus includes two guides adapted to lean against the rail in longitudinally spaced relation to each other, by measuring the distance separating the measuring apparatus and guide rail. This distance measurement is taken, using the measuring device, at a point between the guides. The measured deflections are straightened, and the straightened areas are then checked, again by means of the measuring apparatus, to verify the results.