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. 11, 2019
Filed:
Apr. 04, 2016
Kone Corporation, Helsinki, FI;
Pekka Kilpeläinen, Oulu, FI;
KONE CORPORATION, Helsinki, FI;
Abstract
An arrangement for aligning guide rails includes an installation platform arranged to be movable in the first direction upwards and downwards in an elevator shaft, said installation platform being provided with an apparatus for aligning guide rails. At least two laser transmitters are arranged at predetermined positions in the shaft below the installation platform, each of said at least two laser transmitters transmitting an upwards directed laser beam that forms a plumb line in the elevator shaft. At least two first position sensitive detectors are attached to the installation platform and/or to the apparatus for aligning guide rails and/or to the guide rails, each of said at least two first position sensitive detectors receiving a respective laser beam, whereby the position of the guide rails in relation to the shaft can be determined indirectly or directly.