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Jie Hu
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Zhejiang Province, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Handrail automatically tensioning system and a method for adjusting...
Patent number
10,865,074
Issue date
Dec 15, 2020
Otis Elevator Company
QingXi Cai
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Direct drive system for passenger conveyer device and passenger con...
Patent number
10,118,801
Issue date
Nov 6, 2018
Otis Elevator Company
Jiangxing Huang
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Two directions escalator driven by a single machine
Patent number
7,784,598
Issue date
Aug 31, 2010
Otis Elevator Company
Yongqing Fang
B66 - HOISTING LIFTING HAULING
Patents Applications
last 30 patents
Information
Patent Application
HANDRAIL AUTOMATICALLY TENSIONING SYSTEM AND A METHOD FOR ADJUSTING...
Publication number
20200087116
Publication date
Mar 19, 2020
Otis Elevator Company
QingXi Cai
B66 - HOISTING LIFTING HAULING
Information
Patent Application
DIRECT DRIVE SYSTEM FOR PASSENGER CONVEYER DEVICE AND PASSENGER CON...
Publication number
20180118520
Publication date
May 3, 2018
Otis Elevator Company
Jiangxing Huang
B66 - HOISTING LIFTING HAULING
Information
Patent Application
OVERSPEED PROTECTION DEVICE FOR ESCALATOR OR MOVING WALKWAY
Publication number
20090294247
Publication date
Dec 3, 2009
Feng Xu
B66 - HOISTING LIFTING HAULING
Information
Patent Application
TWO DIRECTIONS ESCALATOR DRIVED BY SINGLE MACHINE
Publication number
20090173596
Publication date
Jul 9, 2009
Yongqing Fang
B66 - HOISTING LIFTING HAULING