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:
Jan. 14, 2020
Filed:
Oct. 30, 2017
Citic Dicastal Co., Ltd., Qinhuangdao, Hebei, CN;
Ruixiao Zhou, Qinhuangdao, CN;
Fengbao Luo, Qinhuangdao, CN;
Xiao Liu, Qinhuangdao, CN;
Dengyao Li, Qinhuangdao, CN;
Weidong Liu, Qinhuangdao, CN;
Minghua Liu, Qinhuangdao, CN;
CITIC Dicastal CO., LTD., Qinhuangdao, Hebei, CN;
Abstract
Disclosed is a manual adjustable tensioning device. Slope guide slots are formed in the periphery of a lead screw nut, and contacts are provided with slopes having the same angles and placed in the guide slots of the lead screw nut; two ends of a lead screw are respectively supported in threaded holes of a shell and an end cover; screws are connected to the lead screw nut via threaded holes, the tail end of each screw is in contact with one end of a lever, the other end of the lever is in contact with the slope of the lead screw nut, a roller is mounted at the tail end of the lever, and an extension spring is mounted at the end of the slope of the lead screw nut.