Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 3, 2010
Patent Application Number
11890339
Date Filed
August 6, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A rotatable mechanism includes a U-shaped holding seat having left and right arm, a spring unit having a limiting stem received in a reception space defined between the right arm and a protection sheath extending from the left arm toward the right arm, a control shaft extending from the left arm toward the right arm and a torsion spring sleeved the control shaft to provide a torque, and a U-shaped holding frame fastened securely to the control shaft simultaneous rotation of the holding frame together with the spring unit with respect to the holding seat.
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