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:
Nov. 14, 2006
Filed:
Aug. 18, 2004
Wu Feng Qing, Chong Xing Town, CN;
Wu Feng Qing, Chong Xing Town, CN;
Betteli, Inc. Hong Kong, Hong Kong, HK;
Abstract
A door closer comprises a cylinder with an extensible and retractable rod. The cylinder has a first end adapted to be secured to a door frame, while the rod has an outer end adapted to be connected to the door. The rod has a series of grooves along the length. A pawl is mounted in a housing on one end of the cylinder and is adapted for movement between an engaged position engaging one of the grooves of the rod and a disengaged position. A button on the housing is adapted to be depressed to move the pawl to the engaged position, whereby the pawl holds the door open in a selected position. The pawl can be disengaged from the rod merely by opening the door slightly, after which the spring-biased rod automatically pulls the door to the closed position.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile