Inventor
WANG LONGWEN
CN9 patents
Patents
9 patentsUS10479653B2Nov 19, 2019
Monitoring system of a passenger conveyor, a passenger conveyor, and a monitoring method thereof
OTIS ELEVATOR CO4 citations72
US10214391B2Feb 26, 2019
System and method for monitoring handrail entrance of passenger conveyor
OTIS ELEVATOR CO4 citations72
US10071884B2Sep 11, 2018
Detection of state of engagement between step and comb plate of passenger conveyor
OTIS ELEVATOR CO4 citations72
US10183843B2Jan 22, 2019
Monitoring of step rollers and maintenance mechanics of passenger conveyors
OTIS ELEVATOR CO2 citations71
US10059569B2Aug 28, 2018
Monitoring system of a passenger conveyor, a passenger conveyor, and a monitoring method thereof
OTIS ELEVATOR CO5 citations71
US10294081B2May 21, 2019
Escalator braking system and escalator braking control method
OTIS ELEVATOR CO3 citations70
US10772226B2Sep 8, 2020
Waterproof cover
OTIS ELEVATOR CO3 citations64
US10282847B2May 7, 2019
Monitoring system of a passenger conveyor and monitoring method thereof
OTIS ELEVATOR CO0 citations41
US10399824B2Sep 3, 2019
Passenger conveyor system and starting/stopping control method thereof
OTIS ELEVATOR CO0 citations30