US 11,999,592 B2
Elevator system having a derailment protection device
Erich Bütler, Ebikon (CH); Romeo Lo Jacono, Gravesano (CH); Paolo Ferrario, Thalwil (CH); and Peter Möri, Rothenburg (CH)
Assigned to INVENTIO AG, Hergiswil (CH)
Appl. No. 17/309,483
Filed by Inventio AG, Hergiswil (CH)
PCT Filed Dec. 17, 2019, PCT No. PCT/EP2019/085725
§ 371(c)(1), (2) Date Jun. 1, 2021,
PCT Pub. No. WO2020/127322, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 18214771 (EP), filed on Dec. 20, 2018; and application No. 19183314 (EP), filed on Jun. 28, 2019.
Prior Publication US 2022/0041406 A1, Feb. 10, 2022
Int. Cl. B66B 7/02 (2006.01); B66B 5/02 (2006.01); B66B 7/04 (2006.01)
CPC B66B 7/022 (2013.01) [B66B 5/02 (2013.01); B66B 7/046 (2013.01); B66B 7/047 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An elevator system that is suitable both for normal operating situations and for emergency situations, the elevator system comprising:
an elevator car adapted to move within an elevator shaft;
a guide means connected to the elevator car;
a derailment protection device connected to the elevator car, where the guide means and the derailment protection device are mounted directly to different portions of an elevator car wall; and
a guide rail having a first subregion that is contacted by the guide means to guide the elevator car along the guide rail via a channel-shaped sliding interface which delimits motion of the guide means with respect to the guide rail in three horizontal directions and permits said motion in a fourth horizontal direction, the guide rail having a second subregion that contacts the derailment protection device during the emergency situations, the second subregion being oriented perpendicular to the fourth horizontal direction,
wherein a clearance between the derailment protection device and the second subregion of the guide rail maintains the derailment protection device and the second subregion of the guide rail spaced apart during the normal operating situations, and the clearance is less than a disengagement distance of the channel-shaped sliding interface in the fourth horizontal direction during the normal operating situations, the disengagement distance is a distance between the guide means and the first subregion where the channel-shaped sliding interface no longer delimits motion of the guide means in the three horizontal directions; wherein the second subregion of the guide rail also provides a braking region for a gripping device connected to the elevator car.