Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ho Ping Cheng0
Date of Patent
February 23, 2010
0Patent Application Number
111576220
Date Filed
June 21, 2005
0Patent Primary Examiner
Patent abstract
A ring mechanism for retaining loose-leaf pages comprises a housing, hinge plates, and ring members. The housing supports the hinge plates for pivoting motion relative to the housing to open and close ring members mounted thereon. The mechanism comprises a thin, flat travel bar below the hinge plates arranged in a vertical orientation. The travel bar is supported by coil springs in a position where the travel bar is adjacent a bottom surface of the hinge plates. The travel bar moves relative to the hinge plates between a position blocking the hinge plates against pivoting when the ring members are closed and a position allowing the hinge plates to pivot when it is desired to open the ring members.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
