Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Chien-Kai Huang0
Date of Patent
November 13, 2007
Patent Application Number
11206848
Date Filed
August 19, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A chair adjustable device includes a base with which a seat frame and a backrest frame are respectively and pivotably connected. A positioning mechanism is connected to the base and includes an operation handle which is able to shift a transmission frame and a positioning plate is movably connected to the transmission frame and biased by a spring, so that the positioning plate can be movably engaged with one of notches defined in a positioning member on the seat frame. The seat frame and the backrest frame are connected by a connection member so that the chair can be adjusted its tilt angle by operating the operation handle.
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