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Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Chia-Han Lin0
Date of Patent
November 22, 2011
0Patent Application Number
122489360
Date Filed
October 10, 2008
0Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention discloses a hinge structure with changeable frictional faces, comprising a spindle socketingly disposed with a first enclosing part and a second enclosing part with the openings of the first and second enclosing parts pointing to the same direction to change the frictional face for torsion from the second enclosing face to the first enclosing part and thus to extend the service life and further to form a frictional face with four steps of different torsions to meet the demands of customers.
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