US 12,030,742 B2
Method for forming and smoothing a hollow-profile guide rail of an elevator system
Erich Bütler, Ebikon (CH); Romeo Lo Jacono, Gravesano (CH); and Mischa Salvenmoser, Hitzkirch (CH)
Assigned to INVENTIO AG, Hergiswil (CH)
Appl. No. 18/041,225
Filed by Inventio AG, Hergiswil (CH)
PCT Filed Jul. 23, 2021, PCT No. PCT/EP2021/070724
§ 371(c)(1), (2) Date Feb. 10, 2023,
PCT Pub. No. WO2022/037897, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 20191549 (EP), filed on Aug. 18, 2020.
Prior Publication US 2023/0322525 A1, Oct. 12, 2023
Int. Cl. B66B 19/00 (2006.01); B66B 7/02 (2006.01)
CPC B66B 19/002 (2013.01) [B66B 7/022 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for forming a hollow-profile guide rail of an elevator system, the method comprising the steps of:
providing a plurality of individual portions of the hollow-profile guide rail, each of the portions having mutually opposing surfaces;
arranging adjacent ones of the portions in a longitudinal direction one above the other and mutually aligned;
smoothing the opposing surfaces of the portions by inserting a smoothing apparatus between the opposing surfaces such that a guide device of the smoothing apparatus rests against a first of the opposing surfaces and a removal device of the smoothing apparatus rests against a second of the opposing surfaces;
wherein the smoothing apparatus includes a pressing device;
wherein the guide device is movable in the longitudinal direction along the first opposing surface thus guiding the smoothing apparatus along the first opposing surface;
wherein the pressing device presses the removal device away from the guide device and toward the second opposing surface;
displacing the smoothing apparatus in the longitudinal direction along the first opposing surface; and
wherein the removal device removes material from the second opposing surface during the displacement of the smoothing apparatus in the longitudinal direction along the first opposing surface.