Yi Cao

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Changshu, CN

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Patents Grantslast 30 patents

Information Patent Grant
Traction sheave safety device and elevator car emergency stop metho...
- Patent number 11,325,810
- Issue date May 10, 2022
- Suzhou Torin Drive Equipment Co., Ltd.
- Jianwen Cao
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
TRACTION SHEAVE SAFETY DEVICE AND ELEVATOR CAR EMERGENCY STOP METHO...
- Publication number 20190047820
- Publication date Feb 14, 2019
- SUZHOU TORIN DRIVE EQUIPMENT CO., LTD.
- Jianwen Cao
- B66 - HOISTING LIFTING HAULING