Ring mechanism with spring biased travel bar

Details Ring mechanism with spring biased travel bar Ring mechanism with spring biased travel bar

2005-06-21

2010-02-23

Ross, Dana (Department: 3725)

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

Travel in plane perpendicular to axis of rotation

C402S035000, C402S036000, C402S037000

Reexamination Certificate

active

07665926

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.

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Kokuyo Lock Ring Mechanism with description, two instruction sheets, and nine photographs, undated but admitted as prior art, 12 pgs.
Office Action dated Apr. 20, 2007 from related U.S. Appl. No. 10/323,052 now issued as U.S. Patent No. 7,296,946, 12 pages—(see p. 4).
Office action issued Mar. 26, 2009 from related U.S. Appl. No. 11/208,951, 12 pgs.

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