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Class Information
Number: 402/31
Name: Binder device releasably engaging aperture or notch of sheet > Sheet retainer travels arcuate path > Travel in plane perpendicular to axis of rotation > Opposed sheet retainers (e.g., ring binders, etc.)
Description: Device wherein the device includes a pair of sheet retainers contralaterally disposed with their distal ends either in offset or aligned relation, which retainers pass through the thickness dimension of the sheet and cooperate to releasably secure the sheet.










Sub-classes under this class:

Class Number Class Name Patents
402/36 Hinged on spaced axes 78
402/33 Opening between retainers adjustable in predetermined increments 6
402/42 Rotatable on discrete hinge pin 19
402/32 Spacing of adjacent retainers adjustable 8
402/34 Stationary retainer with traveling opposed retainer 26


Patents under this class:
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Patent Number Title Of Patent Date Issued
8568052 Binder Oct. 29, 2013
8545122 Binding device Oct. 1, 2013
8545123 Ring binder Oct. 1, 2013
8517624 Binder apparatus Aug. 27, 2013
8480326 Ring binder mechanism Jul. 9, 2013
8414212 Ring binder mechanism Apr. 9, 2013
8277140 Loose-leaf binder Oct. 2, 2012
8186899 Ring binder mechanism May. 29, 2012
8128305 Device and method for aligning and securing a ring binder mechanism Mar. 6, 2012
8118514 Combination flipbook and pull-up focal header Feb. 21, 2012
8052343 Ring binder mechanism Nov. 8, 2011
8047737 Ring binder mechanism Nov. 1, 2011
8043018 Ring binder mechanism Oct. 25, 2011
7950866 Ring binder mechanism with polymeric housing May. 31, 2011
7878729 Intermediate connector for a ring binder mechanism Feb. 1, 2011
7758271 Ring mechanism biased to closed and locked position Jul. 20, 2010
7748922 Ring binder mechanism with dual pivot locking elements Jul. 6, 2010
7744300 Ready lock ring binder mechanism Jun. 29, 2010
7690855 Binding tool for documents or the like Apr. 6, 2010
7674062 Ring binder mechanism Mar. 9, 2010
7665925 Binder and binding device Feb. 23, 2010
7661900 Binder Feb. 16, 2010
7654764 Ring binder mechanism having blocking device Feb. 2, 2010
7648302 Ring binder mechanism Jan. 19, 2010
7491006 Easy open ring binder Feb. 17, 2009
7478963 Binding device Jan. 20, 2009
7331732 Loose-leaf binding tool Feb. 19, 2008
7270496 Ring mechanism for a ring binder Sep. 18, 2007
7241067 Ring mechanism having blunt ends Jul. 10, 2007
7223040 Binder May. 29, 2007
7021852 Article holder Apr. 4, 2006
6974273 Ring binder Dec. 13, 2005
6916134 Safety ring binder having sliding actuators Jul. 12, 2005
RE38731 Ring binder May. 3, 2005
6840695 Ring-binder mechanism Jan. 11, 2005
6761497 Loose-leaf binder Jul. 13, 2004
6746171 Modular ring binder assembly with removable rivets Jun. 8, 2004
6702501 Loose-leaf binder Mar. 9, 2004
6666609 Flip chart holder Dec. 23, 2003
6536980 Ring binder having actuating lever with cushion member Mar. 25, 2003
6533486 Ring binder having actuating lever with cushion member Mar. 18, 2003
6527465 Ring binder assembly Mar. 4, 2003
6511244 Binder Jan. 28, 2003
6474897 Ring binder having actuating lever with cushion member Nov. 5, 2002
6394686 Clinch fastener May. 28, 2002
6371678 Loose-leaf binder Apr. 16, 2002
6328497 Ring mechanism for a binder having a plastic top section Dec. 11, 2001
6293722 Binder Mechanism Sep. 25, 2001
6280114 Ring binder having actuating lever with cushion member Aug. 28, 2001
6270279 Ring binder mechanism Aug. 7, 2001

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