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:
Mar. 20, 2018
Filed:
Oct. 26, 2016
Applicant:
Cmech (Guangzhou) Ltd., Guangdong, CN;
Inventor:
Shuiwang Fan, Guangzhou, CN;
Assignee:
Cmech (Guangzhou) Ltd., Guangdong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F 1/10 (2006.01); E05F 3/00 (2006.01); E05F 3/02 (2006.01); E05F 3/10 (2006.01); E05F 5/08 (2006.01); E05F 3/22 (2006.01);
U.S. Cl.
CPC ...
E05F 3/02 (2013.01); E05F 1/105 (2013.01); E05F 3/10 (2013.01); E05F 3/104 (2013.01); E05F 5/08 (2013.01); E05F 2003/228 (2013.01); E05Y 2201/686 (2013.01); E05Y 2900/132 (2013.01);
Abstract
A door closer capable of adjusting door closing speed, includes a pneumatic cylinder on the door frame, a hydraulic cylinder on the door, and a lever. One end of the lever is movably connected to the pneumatic cylinder, and the other end is connected to the hydraulic cylinder. The pneumatic cylinder includes a sliding rail, and a sliding member cooperated with the sliding rail. A hermetic chamber is formed by the sliding member and the sliding rail. An adjusting valve, for adjusting the air exhaust of the hermetic chamber, is provided on a wall of the hermetic chamber.