US1398034A - Loose-leaf binder - Google Patents

Loose-leaf binder Download PDF

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Publication number
US1398034A
US1398034A US453815A US45381521A US1398034A US 1398034 A US1398034 A US 1398034A US 453815 A US453815 A US 453815A US 45381521 A US45381521 A US 45381521A US 1398034 A US1398034 A US 1398034A
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ring sections
cylindrical
binder
plates
loose
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US453815A
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Frank K Mero
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
    • B42F13/00—Filing appliances with means for engaging perforations or slots
    • B42F13/16—Filing appliances with means for engaging perforations or slots with claws or rings
    • B42F13/20—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges
    • B42F13/22—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges in two sections engaging each other when closed

Definitions

  • T 0 aZZ whomz't may concern Be it known that I, FRANK K. Mano, a citizen of the United States, residing at Malden, county of Middlesei: State of Massachusetts, have invented an Improvement in Loose-Leaf Binders, of which the following description, in connection with the accompanying drawing, is a specificat on, l ke characters on the drawing representing llke parts.
  • This invention relates to improvements in temporary binders which are some times designated as loose-leaf binders and the object of the invention is to provide a novel construction which can be economically produced and which will be more effective in operation than those heretofore constructed.
  • a further object of the invent1on 1s to provide a temporary binder comprising a plurality of pairs of cooperating segmental ring sections which may be opened to release the leaves rotating one of said sections about an axis substantially coincident with the axes of the ring sections, thereby avoiding the disengagement of the leaves which frequently occurs in opening usual types of binders in which the abutting ends of the rings are both moved away from each other in arcs which are not concentric with the axes of the ring sections.
  • a further object of the invention is to provide a temporary binder of the character specified with actuating means for openrng and closing the ring sections which is easily accessible to the operator and which will unfailingly separate and close all of the ring sections in unison.
  • a further object of the invention is to provide a temporary binder which will not require the use of springs thereby producing a more durable construction.
  • Figure 1 is a perspective view of a looseleaf binder having my invention embodied therein, a portion of the cover being broken away;
  • Fig. 2 is a central vertical longitudinal Specification of Letters Patent.
  • Fig. 3 is a vertical sectional view on line 33 Fig. 2, showing the interlocking members of the nesting plates of the binder in locked position;
  • Fig. & is a vertical sectional view on line %-4t Fig. 2 showing the position of the parts when the ends of the rings are in abutting position;
  • Fig. 5 is a vertical sectional view on line 3-3 Fig. 2, showing the interlocking members of the nesting plates of the binder in the unlocked position which is assumed when the ends of the ring sections are sepa 'ated;
  • Fig. 6 is a vertical sectional view on line similar to Fig. 4:, but showing the position of the parts when the ends of the ring sections are separated;
  • Fig. 7 is a vertical central sectional view upon a different plane than that illustrated in F 2 showing the manner in which the actuator is connected to the inner cylindrical member of the binder and also serves as a guide for the outer cylindrical member.
  • a preferred embodiment of the invention is illustrated in the accompanying drawing as applied to a loose-leaf binder having a cover 1 provided with an insert 2 at the central portion thereof to which the binder is attached.
  • the binder comprises a narrow lower or outer plate 3 in the form of a section of a cylinder and provided with preferably complete cylindrical ends 4 and This outer plate is provided with a constitus of parallel segmental ring sections 6 spaced apart considerable distances and adapted to pass through perforations in the loose sheets which are to be bound together.
  • the outer plate 3 has stamped from it, adjaccnt its ends. downwardly offset tongues 7 which pass through the insert 2 and also through suitable apertures in an anchoring plate 8 which lies bet-weenthe insert 2 and the cover 1. Thus the outer plate 3 is firmly fastened to the cover.
  • the inner or upper plate 9 likewise is cylindrical in form and curved to nest with the cylindrical plate 3. Like the cylindrical plate 3 it is provided with complete cylindrical ends 10 which are concentric with and it within the cylindrical ends of the outer plate and form bearings by means of which the inner plate may be rotated relatively to the outer plate. Segmental ring sections 11 extend from the opposite side of the inner plate 9 in the same transverse planes as the rings 6 and are adapted to abut at their ends against the ends of the ring sections 6. Preferably the abutting ends are made in the form of interlocking V-shaped tongues and grooves so that when assembled the rings will be continuous, the interlocking endsalso serving to prevent relative displacement.
  • the .inner plate 9 desirably is provided adjacent one end with a downwardly bent member 12 which engages a recess 13 from which the tongue 7 is stamped and when interlocked therewith retains the ends of the ring sections 6 and 11 in engagement.
  • the member 12 is so constructed as to present inclined outer surfaces so that when the inner plate isrotated the member 12 will ride up over the recess 13 into the position illustrated in Fig. 5 and aid inretaining the ends of the rings in separated position while the leaves are being placed upon the rings or removed therefrom. When the leaves are assembled rotation of the inner plate in the opposite direction will close the ends of the ring sections together and the member 12, dropping again into the recess 13, will retain them in closed position.
  • the inner plate is moved by an actuator which preferably is in the form of a stamped cylindrical handle member 14 having a milled periphery 15 which can be readily engaged by the fingers of the operator.
  • the actuator has an extension 16 of smaller diameter which preferably fits snugly within one of the cylindrical members10 of the inner plate. This construction provides a shoulder 1'? against which the outer edge of the cylindrical portion 5 of the outer plate rests and is guided.
  • Tabs 18, stamped from the central portion 19 of the extension 16 are bent outwardly therefrom and. engage and fit tightly in suitable recesses in the edge of the inner cylindrical member 10 and also extend into slots 20 in the outer cylindrical member 5.
  • the actuator is locked firmly to the inner cylindrical member 10 and the ends of the tabs 18, which project beyond and engage slots in the outer concentric cylindrical member 5, serve to retain the cylindrical members at one end of the binder in assembled position and also form a guide which cooperates with the shoulder 17 for the hearing which is formed between the inner cylindrical member 10 and the outer cylindrical member 5.
  • the actuator 14 serves as a means for rotating the inner cylindrical member 10 and with it the plate 9 and ring sections 11 and also serves to retain the plates, which carry the ring sections, in assembled position.
  • the plates may be made of flat sheet metal with extensions cut from the sheet to form the ring sections 6 and 11 respectively, and also extensions which, when welded together at their ends, form the cylindrical portions 4;, 5, 10 respectively, or if desired the end sections may be drawn from a suitable sheet instead of being made in the manner above described.
  • the plates When the plates are thus formed they may be assembled by slipping one of the ends 10 through the cylindrical sections 4 and 5 of the outer plate.
  • the reduced portion 16 of the actuator may then be introduced into the inner cylindrical member 10 at one end and the tabs bent outwardly to engage the recesses in the concentric cylindrical members 10' and'5 respectively.
  • the ends 21 and 22 of the slots 20 serve to limit the rotative movement of the inner member by engaging the edges of the tabs 18, thereby preventing the ring sections from being moved beyond a predetermined position, so that a desired number of leaves may be retained upon the ring sections of the binder.
  • a temporary'binder comprising a pair of nesting cylindrically curved plates having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and means for causing relative rotation between said plates about an axis substantially concentric with the axis of their curvature.
  • a temporary binder comprising a pair of nesting cylindrically curved plates provided with concentric cylindrical end members forming bearings and having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and means for rotating one of said plates about an axis concentric with the axis of its curvature.
  • a temporary binder comprising a pair of nesting cylindrically curved plates provided with concentric cylindrical'end members forming bearings and having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges, means for rotating one of said plates about an axis concentric with the axis of its curvature and an actuator secured to one of said cylindrical members.
  • a temporary binder comprising a pair of nesting cylindrically curved plates provided with releasable interlocking means and having a plurality of pairs of segmental abutting ring sections extending from their opposite edges and means for causing relative movement between said plates about an axis substantially concentric with their axes of curvature.
  • a temporary binder comprising a pair of nesting cylindrically curved plates, the outer plate having means for securing the same to a cover, said plates having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and at their ends concentric cylindrical members forming bearings, a cylindrical actuator fitting and secured to the inner cylindrical member provided with a milled extension and operable to rotate the inner plate and thereby cause separation of the abutting ends of said segmental ring sections.
  • a temporary binder comprising a pair of nesting cylindrically curved plates, the outer plate having means for securing the same to a cover, said plates having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and at their ends concentric cylindrical members forming bearings, a cylindrical actuator fitting within the inner cylindrical member provided with means engaging said inner cylindrical member and having guiding means for retaining said inner and outer cylindrical members in assembled position.
  • a temporary binder comprising a pair of nesting cylindrically' curved plates, the outer plate having means for securing the same to a cover, said plates having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and at their ends concentric cylindrical members forming bearings, a cylindrical actuator having a cylindrical extension of reduced diameter fitting said inner cylindrical member and also presenting a shoulder engaging the end of the outer cylindrical member and tabs formed from said actuator engaging recesses in said inner cylindrical member and extending into engagement with the opposite edge of said outer cylindrical member whereby the parts of the binder are retained in assembled position.

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Description

F. K. MERO.
LOOSE LEAF BINDER.
APPLlCATlON men MAR. 19, 1921.
Patented Nov. 22, 1921.
Inventor. Frank K Mero byMM/zm Atrys.
UNITED STATES FRANK K. MERO, OF MALDEN, MASSACHUSETTS.
LOOSE-LEAF BINDER.
Application filed March 19, 1921.
T 0 aZZ whomz't may concern Be it known that I, FRANK K. Mano, a citizen of the United States, residing at Malden, county of Middlesei: State of Massachusetts, have invented an Improvement in Loose-Leaf Binders, of which the following description, in connection with the accompanying drawing, is a specificat on, l ke characters on the drawing representing llke parts.
This invention relates to improvements in temporary binders which are some times designated as loose-leaf binders and the object of the invention is to provide a novel construction which can be economically produced and which will be more effective in operation than those heretofore constructed.
A further object of the invent1on 1s to provide a temporary binder comprising a plurality of pairs of cooperating segmental ring sections which may be opened to release the leaves rotating one of said sections about an axis substantially coincident with the axes of the ring sections, thereby avoiding the disengagement of the leaves which frequently occurs in opening usual types of binders in which the abutting ends of the rings are both moved away from each other in arcs which are not concentric with the axes of the ring sections.
A further object of the invention is to provide a temporary binder of the character specified with actuating means for openrng and closing the ring sections which is easily accessible to the operator and which will unfailingly separate and close all of the ring sections in unison.
A further object of the invention is to provide a temporary binder which will not require the use of springs thereby producing a more durable construction.
Other objects and features of the invention will more fully appear from the following description and the annexed draw ings and will be particularly pointed out in the accompanying claims.
A preferred embodiment of the inven tion is illustrated in the accompanying drawings as applied to a usual form of loose-leaf binder.
In the drawings:
Figure 1 is a perspective view of a looseleaf binder having my invention embodied therein, a portion of the cover being broken away;
Fig. 2 is a central vertical longitudinal Specification of Letters Patent.
Patented Nov. 22, 1921.
Serial No. 453,815.
section through the temporary binder and the cover to which it is afiixed;
Fig. 3 is a vertical sectional view on line 33 Fig. 2, showing the interlocking members of the nesting plates of the binder in locked position;
Fig. & is a vertical sectional view on line %-4t Fig. 2 showing the position of the parts when the ends of the rings are in abutting position; i
Fig. 5 is a vertical sectional view on line 3-3 Fig. 2, showing the interlocking members of the nesting plates of the binder in the unlocked position which is assumed when the ends of the ring sections are sepa 'ated;
Fig. 6 is a vertical sectional view on line similar to Fig. 4:, but showing the position of the parts when the ends of the ring sections are separated; and,
Fig. 7 is a vertical central sectional view upon a different plane than that illustrated in F 2 showing the manner in which the actuator is connected to the inner cylindrical member of the binder and also serves as a guide for the outer cylindrical member.
A preferred embodiment of the invention is illustrated in the accompanying drawing as applied to a loose-leaf binder having a cover 1 provided with an insert 2 at the central portion thereof to which the binder is attached. The binder comprises a narrow lower or outer plate 3 in the form of a section of a cylinder and provided with preferably complete cylindrical ends 4 and This outer plate is provided with a scries of parallel segmental ring sections 6 spaced apart considerable distances and adapted to pass through perforations in the loose sheets which are to be bound together. The outer plate 3 has stamped from it, adjaccnt its ends. downwardly offset tongues 7 which pass through the insert 2 and also through suitable apertures in an anchoring plate 8 which lies bet-weenthe insert 2 and the cover 1. Thus the outer plate 3 is firmly fastened to the cover.
The inner or upper plate 9 likewise is cylindrical in form and curved to nest with the cylindrical plate 3. Like the cylindrical plate 3 it is provided with complete cylindrical ends 10 which are concentric with and it within the cylindrical ends of the outer plate and form bearings by means of which the inner plate may be rotated relatively to the outer plate. Segmental ring sections 11 extend from the opposite side of the inner plate 9 in the same transverse planes as the rings 6 and are adapted to abut at their ends against the ends of the ring sections 6. Preferably the abutting ends are made in the form of interlocking V-shaped tongues and grooves so that when assembled the rings will be continuous, the interlocking endsalso serving to prevent relative displacement.
The .inner plate 9 desirably is provided adjacent one end with a downwardly bent member 12 which engages a recess 13 from which the tongue 7 is stamped and when interlocked therewith retains the ends of the ring sections 6 and 11 in engagement. The member 12 is so constructed as to present inclined outer surfaces so that when the inner plate isrotated the member 12 will ride up over the recess 13 into the position illustrated in Fig. 5 and aid inretaining the ends of the rings in separated position while the leaves are being placed upon the rings or removed therefrom. When the leaves are assembled rotation of the inner plate in the opposite direction will close the ends of the ring sections together and the member 12, dropping again into the recess 13, will retain them in closed position.
It will be noted that in the present construction when the ends of the ring sections are separated and caused to approach each other the plates are rotated relatively to each other in such a manner that the rings move about an axis which is substantially coincident with the axes of the ring sections, or in other words which is co-axial with the axes of the concentric ring sections 4, 5, 10 which form a part. of the respective plates.
Any suitable means may be provided for thus rotatingthe plates relatively to each other. In the preferred embodiment of the invention illustrated herein the inner plate is moved by an actuator which preferably is in the form of a stamped cylindrical handle member 14 having a milled periphery 15 which can be readily engaged by the fingers of the operator. The actuator has an extension 16 of smaller diameter which preferably fits snugly within one of the cylindrical members10 of the inner plate. This construction provides a shoulder 1'? against which the outer edge of the cylindrical portion 5 of the outer plate rests and is guided. Tabs 18, stamped from the central portion 19 of the extension 16, are bent outwardly therefrom and. engage and fit tightly in suitable recesses in the edge of the inner cylindrical member 10 and also extend into slots 20 in the outer cylindrical member 5.
By reason of this construction the actuator is locked firmly to the inner cylindrical member 10 and the ends of the tabs 18, which project beyond and engage slots in the outer concentric cylindrical member 5, serve to retain the cylindrical members at one end of the binder in assembled position and also form a guide which cooperates with the shoulder 17 for the hearing which is formed between the inner cylindrical member 10 and the outer cylindrical member 5. Thus the actuator 14 serves as a means for rotating the inner cylindrical member 10 and with it the plate 9 and ring sections 11 and also serves to retain the plates, which carry the ring sections, in assembled position.
In the construction of the device the plates may be made of flat sheet metal with extensions cut from the sheet to form the ring sections 6 and 11 respectively, and also extensions which, when welded together at their ends, form the cylindrical portions 4;, 5, 10 respectively, or if desired the end sections may be drawn from a suitable sheet instead of being made in the manner above described.
When the plates are thus formed they may be assembled by slipping one of the ends 10 through the cylindrical sections 4 and 5 of the outer plate. The reduced portion 16 of the actuator may then be introduced into the inner cylindrical member 10 at one end and the tabs bent outwardly to engage the recesses in the concentric cylindrical members 10' and'5 respectively.
Preferably the ends 21 and 22 of the slots 20 serve to limit the rotative movement of the inner member by engaging the edges of the tabs 18, thereby preventing the ring sections from being moved beyond a predetermined position, so that a desired number of leaves may be retained upon the ring sections of the binder.
It will be understood that the embodiment of the invention disclosed herein is illustrative and not restrictive and that various modifications in form, arrangement and construction of parts be made within the spirit and scope of my invention.
Having thus described my inventiomwhat I claim as new, and desire. to secure by Letters Patent, is:
1. A temporary'binder comprising a pair of nesting cylindrically curved plates having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and means for causing relative rotation between said plates about an axis substantially concentric with the axis of their curvature.
2. A temporary binder comprising a pair of nesting cylindrically curved plates provided with concentric cylindrical end members forming bearings and having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and means for rotating one of said plates about an axis concentric with the axis of its curvature.
A temporary binder comprising a pair of nesting cylindrically curved plates provided with concentric cylindrical'end members forming bearings and having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges, means for rotating one of said plates about an axis concentric with the axis of its curvature and an actuator secured to one of said cylindrical members.
4. A temporary binder comprising a pair of nesting cylindrically curved plates provided with releasable interlocking means and having a plurality of pairs of segmental abutting ring sections extending from their opposite edges and means for causing relative movement between said plates about an axis substantially concentric with their axes of curvature.
5. A temporary binder comprising a pair of nesting cylindrically curved plates, the outer plate having means for securing the same to a cover, said plates having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and at their ends concentric cylindrical members forming bearings, a cylindrical actuator fitting and secured to the inner cylindrical member provided with a milled extension and operable to rotate the inner plate and thereby cause separation of the abutting ends of said segmental ring sections.
6. A temporary binder comprising a pair of nesting cylindrically curved plates, the outer plate having means for securing the same to a cover, said plates having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and at their ends concentric cylindrical members forming bearings, a cylindrical actuator fitting within the inner cylindrical member provided with means engaging said inner cylindrical member and having guiding means for retaining said inner and outer cylindrical members in assembled position.
7. A temporary binder comprising a pair of nesting cylindrically' curved plates, the outer plate having means for securing the same to a cover, said plates having a plurality of pairs of cooperating segmental abutting ring sections extending from their opposite edges and at their ends concentric cylindrical members forming bearings, a cylindrical actuator having a cylindrical extension of reduced diameter fitting said inner cylindrical member and also presenting a shoulder engaging the end of the outer cylindrical member and tabs formed from said actuator engaging recesses in said inner cylindrical member and extending into engagement with the opposite edge of said outer cylindrical member whereby the parts of the binder are retained in assembled position.
In testimony whereof, I have signed my name to this specification.
FRANK K. MERO.
US453815A 1921-03-19 1921-03-19 Loose-leaf binder Expired - Lifetime US1398034A (en)

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450785A (en) * 1944-06-16 1948-10-05 Gen Binding Corp Binding
US20030103798A1 (en) * 2001-11-30 2003-06-05 World Wide Stationery Manufacturing Company, Ltd. Ring binder mechanism
US20050013654A1 (en) * 2002-12-18 2005-01-20 World Wide Stationery Mfg. Co., Ltd. Ready lock ring binder mechanism
US20050201819A1 (en) * 2004-03-15 2005-09-15 Cheng Hung Y. Positive lock ring binder mechanism
US20050201818A1 (en) * 2004-03-15 2005-09-15 Cheng Hung Y. Soft close ring binder mechanism
US20050201817A1 (en) * 2004-03-15 2005-09-15 World Wide Stationery Manufacturing Company, Limited. Ring binder mechanism with dual pivot locking elements
US20050214064A1 (en) * 2004-03-15 2005-09-29 World Wide Stationery Manufacturing Company, Limited Soft close ring binder mechanism with reinforced travel bar
US20060147254A1 (en) * 2004-12-30 2006-07-06 World Wide Stationery Mfg. Co., Ltd. Lever for a ring mechanism
US20060147253A1 (en) * 2004-12-30 2006-07-06 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism spring biased to a locked position when ring members close
US20060153629A1 (en) * 2005-01-12 2006-07-13 World Wide Stationery Manufacturing Company, Limited Ring mechanism biased to closed and locked position
US20060251467A1 (en) * 2005-05-06 2006-11-09 Cheng Hung Y Travel bar for use with a ring mechanism
US20070086836A1 (en) * 2005-09-19 2007-04-19 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism with operating lever and travel bar
US20070160415A1 (en) * 2005-03-22 2007-07-12 World Wide Stationery Mfg. Co., Ltd. Ring Binder Mechanism
US20080075526A1 (en) * 2006-09-27 2008-03-27 World Wide Stationery Mfg. Co., Ltd. Ring Binder Mechanism
US20080075527A1 (en) * 2006-09-27 2008-03-27 World Wide Stationery Mfg. Co., Ltd. Ring Binder Mechanism
US20080124166A1 (en) * 2006-09-27 2008-05-29 World Wide Stationery Mfg. Co., Ltd. Ring Binder Mechanism
US7524128B2 (en) 2004-12-30 2009-04-28 World Wide Stationery Manufacturing Company Limited Ring binder mechanism spring biased to a locked position
US20090110469A1 (en) * 2007-10-31 2009-04-30 Chun Yuen To Ring binder mechanism
US20090110470A1 (en) * 2007-10-31 2009-04-30 World Wide Stationery, Mfg. Co., Ltd. Ring binder mechanism with polymeric housing and actuator
US7600939B2 (en) 2006-09-28 2009-10-13 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism with sliding hinge plate
US7661899B2 (en) 2005-03-22 2010-02-16 World Wide Stationery Mfg. Co., Ltd. Lever for a ring binder mechanism
US20110170942A1 (en) * 2010-01-14 2011-07-14 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism having dual time buffer actuator
US8162556B2 (en) 2008-12-30 2012-04-24 World Wide Stationery Mfg. Co., Ltd. Actuator for a ring binder mechanism
US8480327B2 (en) 2009-01-16 2013-07-09 Hans Johann Horn Binder apparatus
US8573876B2 (en) 2004-03-15 2013-11-05 World Wide Stationery Manufacturing Company, Limited Soft close ring binder mechanism with mating ring tips
US8851783B2 (en) 2010-06-09 2014-10-07 World Wide Stationary Mfg. Co. Ltd. Ring binder mechanism having snap-in ring members
US8899866B2 (en) 2012-04-28 2014-12-02 World Wide Stationary Mfg. Co. Ltd. Ring binder mechanism with self-locking actuator
US9511617B2 (en) 2013-10-31 2016-12-06 World Wide Stationary Mfg. Co., Ltd. Ring binder mechanism
US9522561B2 (en) 2013-08-27 2016-12-20 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism
US9895922B2 (en) 2015-02-05 2018-02-20 World Wide Stationery Mfg. Co., Ltd. Ring binder with interlocking ring members

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US2450785A (en) * 1944-06-16 1948-10-05 Gen Binding Corp Binding
US8414212B2 (en) 2001-11-30 2013-04-09 Hung Yuen Cheng Ring binder mechanism
US20030103798A1 (en) * 2001-11-30 2003-06-05 World Wide Stationery Manufacturing Company, Ltd. Ring binder mechanism
US20080050171A1 (en) * 2001-11-30 2008-02-28 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism
US7296946B2 (en) 2001-11-30 2007-11-20 Microsoft Corporation Ring binder mechanism
US7878729B2 (en) 2001-11-30 2011-02-01 World Wide Stationery Manufacturing Company, Ltd. Intermediate connector for a ring binder mechanism
US7744300B2 (en) 2002-12-18 2010-06-29 World Wide Stationery Mfg. Co., Ltd. Ready lock ring binder mechanism
US20080089736A1 (en) * 2002-12-18 2008-04-17 Cheng Hung Y Ready lock ring binder mechanism
US20090041532A1 (en) * 2002-12-18 2009-02-12 World Wide Stationery Mfg. Co., Ltd Ready lock ring binder mechanism
US8038361B2 (en) 2002-12-18 2011-10-18 World Wide Stationery Mfg. Co., Ltd. Ready lock ring binder mechanism
US20050013654A1 (en) * 2002-12-18 2005-01-20 World Wide Stationery Mfg. Co., Ltd. Ready lock ring binder mechanism
US20110110703A1 (en) * 2002-12-18 2011-05-12 World Wide Stationery Mfg. Co., Ltd. Ready lock ring binder mechanism
US7891901B2 (en) * 2002-12-18 2011-02-22 World Wide Stationery Mfg. Co., Ltd. Ready lock ring binder mechanism
US7549817B2 (en) 2002-12-18 2009-06-23 World Wide Stationery Mfg. Co., Ltd. Ready lock ring binder mechanism
US7275886B2 (en) 2004-03-15 2007-10-02 World Wide Stationary Mfg. Co., Ltd. Positive lock ring binder mechanism
US20050201818A1 (en) * 2004-03-15 2005-09-15 Cheng Hung Y. Soft close ring binder mechanism
US20050201819A1 (en) * 2004-03-15 2005-09-15 Cheng Hung Y. Positive lock ring binder mechanism
US7748922B2 (en) 2004-03-15 2010-07-06 World Wide Stationery Manufacturing Company, Limited Ring binder mechanism with dual pivot locking elements
US20050201817A1 (en) * 2004-03-15 2005-09-15 World Wide Stationery Manufacturing Company, Limited. Ring binder mechanism with dual pivot locking elements
US8573876B2 (en) 2004-03-15 2013-11-05 World Wide Stationery Manufacturing Company, Limited Soft close ring binder mechanism with mating ring tips
US7661898B2 (en) 2004-03-15 2010-02-16 World Wide Stationery Manufacturing Company, Limited Soft close ring binder mechanism with reinforced travel bar
US8002488B2 (en) 2004-03-15 2011-08-23 World Wide Stationery Mfg. Co., Ltd. Soft close ring binder mechanism
US7597498B2 (en) 2004-03-15 2009-10-06 World Wide Stationery Mfg. Co., Ltd. Positive lock ring binder mechanism
US20050214064A1 (en) * 2004-03-15 2005-09-29 World Wide Stationery Manufacturing Company, Limited Soft close ring binder mechanism with reinforced travel bar
US7404685B2 (en) 2004-12-30 2008-07-29 World Wide Stationery Manufacturing Company, Limited Ring binder mechanism spring biased to a locked position when ring members close
US20060147253A1 (en) * 2004-12-30 2006-07-06 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism spring biased to a locked position when ring members close
US20100278583A1 (en) * 2004-12-30 2010-11-04 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism
US7524128B2 (en) 2004-12-30 2009-04-28 World Wide Stationery Manufacturing Company Limited Ring binder mechanism spring biased to a locked position
US20080267691A1 (en) * 2004-12-30 2008-10-30 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism
US7762734B2 (en) 2004-12-30 2010-07-27 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism
US20060147254A1 (en) * 2004-12-30 2006-07-06 World Wide Stationery Mfg. Co., Ltd. Lever for a ring mechanism
US8043018B2 (en) 2004-12-30 2011-10-25 World Wide Stationery Manufacturing Co., Ltd. Ring binder mechanism
US7534064B2 (en) 2005-01-12 2009-05-19 World Wide Stationery Mfg. Co., Ltd. Ring mechanism biased to closed and locked position
US20090169287A1 (en) * 2005-01-12 2009-07-02 World Wide Stationery Mfg. Co., Ltd. Ring mechanism biased to closed and locked position
US7758271B2 (en) 2005-01-12 2010-07-20 World Wide Stationery Mfg. Co., Ltd. Ring mechanism biased to closed and locked position
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