US 12,330,917 B2
Safety brake system
Jose Miguel Aguado-Martin, Madrid (ES)
Assigned to OTIS ELEVATOR COMPANY, Farmington, CT (US)
Filed by Otis Elevator Company, Farmington, CT (US)
Filed on Nov. 1, 2023, as Appl. No. 18/499,602.
Application 18/499,602 is a division of application No. 17/828,826, filed on May 31, 2022, granted, now 11,827,494.
Claims priority of application No. 21382775 (EP), filed on Aug. 23, 2021.
Prior Publication US 2024/0059526 A1, Feb. 22, 2024
Int. Cl. B66B 5/22 (2006.01); B66B 5/06 (2006.01)
CPC B66B 5/22 (2013.01) [B66B 5/06 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A safety brake system (40; 140; 240; 440; 540) for use in a conveyance system including a guide rail (20) and a conveyance component moveable along the guide rail, the safety brake system comprising:
a safety brake (46; 146; 246; 346; 446; 546) moveable between a non-braking position where the safety brake is not in engagement with the guide rail and a braking position where the safety brake is engaged with the guide rail;
a linkage mechanism (54; 54c; 154; 254; 354; 454; 554); and
an actuator (52; 152; 252; 352; 452; 552) for the safety brake, the actuator being configured to be mounted to the conveyance component and comprising:
an electromagnet (56; 156; 256; 356; 456; 556) switchable between a first state and a second state; and
an actuation component (58; 158; 258; 358; 458; 558) configured to move relative to the electromagnet from a first position when the electromagnet is in the first state to a second position when the electromagnet is in the second state,
wherein the linkage mechanism is coupled between the safety brake and the actuation component such that movement of the actuation component from the first position to the second position when the electromagnet is switched from the first state to the second state is transferred to the safety brake via the linkage mechanism, thus moving the safety brake into the braking position;
wherein the actuator (52; 152; 352; 452; 552) further comprises a biasing member (62; 162; 362; 462; 562) configured to bias the actuation component (58; 158; 358; 458; 558) away from or towards the electromagnet (56; 156; 356; 456; 556);
wherein the biasing member is positioned between the electromagnet and the actuation component.