Kai Chen

Person

Qingdao, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Locking device and opening and closing mechanism having the same
- Patent number 10,655,381
- Issue date May 19, 2020
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Hui Liu
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Coupler uncoupling control mechanism
- Patent number 10,435,046
- Issue date Oct 8, 2019
- QINGDAO SRI TECHNOLOGY CO., LTD.
- Quan Liu
- B61 - RAILWAYS
Information Patent Grant
Front suspension system having overload protection
- Patent number 9,919,721
- Issue date Mar 20, 2018
- Qingdao Sifang Rolling Stock Research Institute Co., Ltd.
- Kai Chen
- B61 - RAILWAYS
Information Patent Grant
Vertical spring support device for coupler
- Patent number 9,902,408
- Issue date Feb 27, 2018
- QINGDAO SRI TECHNOLOGY CO., LTD.
- Kai Chen
- B61 - RAILWAYS
Information Patent Grant
Telescopic mechanism in telescopic hitch buffer device for use in h...
- Patent number 9,616,904
- Issue date Apr 11, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Xiaozhong Lv
- B61 - RAILWAYS
Information Patent Grant
Compact buffer having overload protection
- Patent number 9,440,664
- Issue date Sep 13, 2016
- QINGDAI SRI TECHNOLOGY CO., LTD.
- Hui Liu
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
COUPLER UNCOUPLING CONTROL MECHANISM
- Publication number 20190248388
- Publication date Aug 15, 2019
- Quan LIU
- B61 - RAILWAYS
Information Patent Application
LOCKING DEVICE AND OPENING AND CLOSING MECHANISM HAVING THE SAME
- Publication number 20180094473
- Publication date Apr 5, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Hui Liu
- B61 - RAILWAYS
Information Patent Application
VERTICAL SPRING SUPPORT DEVICE FOR COUPLER
- Publication number 20170334468
- Publication date Nov 23, 2017
- QINGDAO SRI TECHNOLOGY CO., LTD.
- KAI CHEN
- B61 - RAILWAYS
Information Patent Application
OPENING/CLOSING MECHANISM EQUIPPED WITH A SELF-LOCK DEVICE
- Publication number 20160115727
- Publication date Apr 28, 2016
- QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- HUI LIU
- B61 - RAILWAYS
Information Patent Application
FRONT INSTALLED SUSPENSION SYSTEM HAVING OVERLOAD PROTECTION FIELD...
- Publication number 20150114921
- Publication date Apr 30, 2015
- Qingdao Sifang Rolling Stoock Reseach Institute Co., Ltd.
- Kai Chen
- B61 - RAILWAYS
Information Patent Application
COMPACT BUFFER HAVING OVERLOAD PROTECTION
- Publication number 20150008208
- Publication date Jan 8, 2015
- QINGDAO SRI TECHNOLOGY CO., LTD.
- HUI LIU
- B61 - RAILWAYS
Information Patent Application
TELESCOPIC MECHANISM IN TELESCOPIC HITCH BUFFER DEVICE FOR USE IN H...
- Publication number 20140360962
- Publication date Dec 11, 2014
- XIAOZHONG LV
- B61 - RAILWAYS

Person

Patents Grantslast 30 patents

Locking device and opening and closing mechanism having the same

Coupler uncoupling control mechanism

Front suspension system having overload protection

Vertical spring support device for coupler

Telescopic mechanism in telescopic hitch buffer device for use in h...

Compact buffer having overload protection

Patents Applicationslast 30 patents

COUPLER UNCOUPLING CONTROL MECHANISM

LOCKING DEVICE AND OPENING AND CLOSING MECHANISM HAVING THE SAME

VERTICAL SPRING SUPPORT DEVICE FOR COUPLER

OPENING/CLOSING MECHANISM EQUIPPED WITH A SELF-LOCK DEVICE

FRONT INSTALLED SUSPENSION SYSTEM HAVING OVERLOAD PROTECTION FIELD...

COMPACT BUFFER HAVING OVERLOAD PROTECTION

TELESCOPIC MECHANISM IN TELESCOPIC HITCH BUFFER DEVICE FOR USE IN H...