Patent ID: 11858781
Assignee: OTIS ELEVATOR COMPANY
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A frictionless electronic safety actuator (100, 200) for use in an elevator system, comprising:
at least one electromagnet (110; 210, 212), and a magnetic plate (120; 220) attached to a connection arrangement (190; 290);
wherein the connection arrangement (190; 290) is configured to connect the magnetic plate (120; 220) to a linkage (80) that is actuatable so as to move a safety brake (24) into frictional engagement with an elevator guide rail (20); and
wherein the at least one electromagnet (110; 210, 212) is operable to selectively produce a magnetic force which acts upon the magnetic plate (120; 220) to displace the magnetic plate (120; 220) and thereby move the connection arrangement (190; 290) to actuate the linkage (80) without the magnetic plate (120; 220) coming into frictional engagement with the elevator guide rail (20);
wherein the connection arrangement (190) includes a plurality of leaf springs (130) connected in series to form a concertina (135) in a vertical direction with one end fixed and one end movable in vertical direction and a linkage connection point (195) located on the movable end of the concertina (135).