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. 09, 2024
Filed:
Jul. 23, 2021
Inventio Ag, Hergiswil, CH;
INVENTIO AG, Hergiswil, CH;
Abstract
A method for forming and smoothing a hollow-profile guide rail of an elevator system uses a smoothing apparatus to smooth mutually opposing surfaces on a hollow-profile guide rail. The smoothing apparatus includes a guide device, a removal device and a pressing device. The guide device has rollers for moving in a low-friction manner in a longitudinal direction along a first of the opposing surfaces and to thus guide the smoothing apparatus along the first surface. The pressing device has spring elements to press the removal device away from the guide device and toward a second of the opposing surfaces. The removal device has a rasp element to remove material from the second surface during a movement in the longitudinal direction along the second surface.