US 12,466,696 B2
Apparatus for actuating a safety gear associated with an elevator car
Antti Koskinen, Helsinki (FI); Petri Hartikainen, Helsinki (FI); Pekka Hallikainen, Helsinki (FI); and Antti I Mäki, Helsinki (FI)
Assigned to KONE CORPORATION, Helsinki (FI)
Filed by KONE Corporation, Helsinki (FI)
Filed on Oct. 14, 2022, as Appl. No. 17/966,057.
Application 17/966,057 is a continuation of application No. PCT/EP2021/062842, filed on May 14, 2021.
Claims priority of application No. 20174931 (EP), filed on May 15, 2020.
Prior Publication US 2023/0032978 A1, Feb. 2, 2023
Int. Cl. B66B 5/22 (2006.01)
CPC B66B 5/22 (2013.01) 1 Claim
OG exemplary drawing
 
1. An elevator safety system, comprising:
a safety gear;
a first stage actuation mechanism; and
a second stage actuation mechanism, the second stage actuation mechanism comprising:
a wedge arrangement configured to grip a guiderail associated with the elevator car when the first stage actuation mechanism is triggered;
a casing comprising the wedge arrangement and configured for vertical linear movement along the guiderail and
a transmission member having a first end coupled to the casing and a second end coupled to the safety gear,
wherein the safety gear is configured to actuate when the first stage actuation mechanism is triggered, the first stage actuation mechanism causing the wedge arrangement of the second stage actuation mechanism to grip the guiderail and to decelerate vertical movement of the casing in relation to the guiderail and the deceleration of the casing causing the transmission member to engage the safety gear to the guiderail to stop the elevator car,
wherein the second stage actuation mechanism and the safety gear comprise like wedge arrangements and the wedge arrangement of the second stage actuation mechanism is in a smaller scale than the wedge arrangement of the safety gear.