The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2009
Filed:
Jun. 13, 2006
Yongyou Zhang, Guangdong, CN;
Zhuoan Wu, Guangdong, CN;
Liangfu Xie, Guangdong, CN;
Xiya LI, Guangdong, CN;
Yongyou Zhang, Guangdong, CN;
Zhuoan Wu, Guangdong, CN;
Liangfu Xie, Guangdong, CN;
Xiya Li, Guangdong, CN;
CIMC Vehicles Group Co., Ltd., Guangdong, CN;
Abstract
A locking device of extendable and retractable container semi-trailers comprises four link bars, two lock pin assemblies, a crossmember, a falling tube and a pull assembly. Two ends of the pull assembly are connected with two link bars and one lock pin assembly respectively. Said pull assembly comprises an automatic locking and releasing device fixed rotatablely between a bottom plate and a top plate of said crossmember. The pull assembly is rotated round the automatic locking and releasing device to a locking place, and the automatic locking and releasing device locks said pull assembly. The falling tube acts on the automatic locking and releasing device, and the pull assembly is released.