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:
Aug. 07, 2018
Filed:
Aug. 12, 2014
Otis Elevator Company, Farmington, CT (US);
Xiaobo Zhang, Hangzhou, CN;
Qingxi Cai, Hangzhou, CN;
Xiaoxiao Dong, Hangzhou, CN;
Minchao Chen, Hangzhou, CN;
Senyuan Qiao, Hangzhou, CN;
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
An asynchronous door knife comprises a track rack and a base plate; a dynamic blade and an unlocking blade which are connected on the front of the base plate in a swinging manner; a knife lifting ball which is arranged on the dynamic blade; a lock hook which is arranged on the back of the base plate and correspondingly buckled with a latch, wherein the unlocking blade is connected on the base plate through a lifting plate; the lifting plate is hinged on the base plate and comprises a first swing arm and a second swing arm; the first swing arm is hinged with the unlocking blade; the second swing arm is connected with an unlocking connecting rod; a lifting hole is additionally formed on the base plate; the middle of the lock hook is hinged with the unlocking connecting rod through the lifting hole.