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US 12,214,994 B2Granted
Brake disc releasing device, turning device, elevator rescue kit and method
AssigneeOtis Elevator Company
InventorsFengKun Zhu, Hongliang Wu, James L. Hubbard
Life of this patent
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Abstract
A turning device includes 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.
Claims5
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.
3 more elements
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 housing is connected to a housing of the motor spindle mechanism via a plurality of long bolts.
2 more elements
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 a first end of the shaft connector is connected to the motor spindle via bolts, and the shape of a second end of the shaft connector matches a notch on a corresponding end of the output shaft and can transfer torque.
2 more elements
Dependencies are inferred from the claim text.