US 12,214,994 B2
Brake disc releasing device, turning device, elevator rescue kit and method
FengKun Zhu, Tianjin (CN); Hongliang Wu, Tianjin (CN); and James L. Hubbard, Kensington, CT (US)
Assigned to OTIS ELEVATOR COMPANY, Farmington, CT (US)
Filed by Otis Elevator Company, Farmington, CT (US)
Filed on Apr. 7, 2023, as Appl. No. 18/297,278.
Application 18/297,278 is a division of application No. 16/401,605, filed on May 2, 2019, granted, now 11,667,495.
Claims priority of application No. 201810413675.7 (CN), filed on May 3, 2018.
Prior Publication US 2023/0242377 A1, Aug. 3, 2023
Int. Cl. B66B 5/02 (2006.01); F16D 65/18 (2006.01); F16H 19/00 (2006.01); F16D 121/16 (2012.01); F16D 125/24 (2012.01); F16D 125/60 (2012.01); F16D 125/64 (2012.01)
CPC B66B 5/027 (2013.01) [F16D 65/18 (2013.01); F16H 19/001 (2013.01); F16D 2121/16 (2013.01); F16D 2125/24 (2013.01); F16D 2125/60 (2013.01); F16D 2125/64 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A turning device, comprising:
a hand disc coupled to an input shaft;
a reduction gear set accommodated in a housing and connected to the input shaft and an output shaft; and
a shaft connector for connecting the output shaft and a motor spindle;
wherein the reduction gear set comprises a first gear coupled to the input shaft and a second gear coupled to the output shaft;
wherein the gear ratio of the second gear to the first gear is greater than 4:1.