US3728036A - Binding for perforated leaves made up of a singleplastic piece - Google Patents

Binding for perforated leaves made up of a singleplastic piece Download PDF

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Publication number
US3728036A
US3728036A US00090411A US3728036DA US3728036A US 3728036 A US3728036 A US 3728036A US 00090411 A US00090411 A US 00090411A US 3728036D A US3728036D A US 3728036DA US 3728036 A US3728036 A US 3728036A
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US
United States
Prior art keywords
binding
base
shutter
shutters
edge
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US00090411A
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English (en)
Inventor
G Cott
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RELIURE IND STD
Original Assignee
RELIURE IND STD
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Publication date
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Classifications

    • 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
    • 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
    • B42F13/26—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 and locked when so engaged, e.g. snap-action

Definitions

  • An object of the invention is to provide a binding system which eliminates these disadvantages.
  • a further object of the invention is to provide a binding system which eliminates these disadvantages, as well.
  • the invention seeks the elimination of these and disadvantages also.
  • the invention contemplates a binding with opening rings for perforated leaves, which is made of plastic and in a single piece, and which is achieved by moulding or by injection, and which comprises no other part or mechanism.
  • the binding according to the invention is made up of a single plastic part forming side by side, parallel with the length of the binding, a base and two shutters, each in the form of an elongated rectangle, the base being one, by means of a thinned down part forming the hinge, with a median shutter provided with a set of half-rings and itself integral, by means of another thinned down part forming the hinge with a lateral shutter provided with the other set of half-rings; in the closed position of the binding, the two shutters are side by side above the base and the half-rings are in contact with each other two by two, with, in this closed position of the binding, reciprocal locking between the lateral shutter and the base; the opening of the binding is obtained by a controlled release of the said lock.
  • this structure according to the invention provides two important advantages; in the open position of the binding, the two hinges allow the shutters to be opened wide between themselves and between them and the base, readily freeing these parts of the single piece from each other, which allows it to be obtained by moulding and injection and which allows the base to be fastened by rivet or eyelet to the spine of a cover.
  • the two thinned down parts forming the hinges only develop weak or insignificant elastic pull; so the user can choose, as he pleases the degree of opening of the rings according to his desires of the moment, and the binding remains open like this without the need to hold it in position.
  • the binding according to the invention is made up of a single plastic piece, comprising, according to the same cross-section respected throughout almost the whole length ofthe binding, a base provided, on one side and over at least a fraction of the said length, with a locking section with above an oblique facet wider at the bottom and provided, on the other side, with a projecting flange on the top of the base, this flange being limited, over the said length, by a longitudinal groove open towards the bottom and providing, over at least a fraction of the said length, a thin part, by means of which the flange is in one piece with a median shutter, returning back above the base in the closed position of the binding, bearing a set of half rings on its face opposite the base, limited, on the side opposite the said flange, by a longitudinal groove open towards the top and providing, over at least a fraction of the said length, a thin part by means of which the median shutter is integral with the lateral shutter, extending the median shutter above the base in the closed position of the binding, bearing
  • the binding according to the invention comprises two handling levers, that is to say one at each end of the binding, this although the action of a single one of these levers suffices to bring about the opening of the binding.
  • the binding may comprise a number other than two of handling levers, for example a single lever, placed for example at one end of the binding, or placed for example towards its centre or still for example to the right of the said lock.
  • the said lock is the closed position of the binding according to the invention may be made up of a counter section in the form of a lip, for example provided on the said flap of the lateral shutter engaging under the projection of a section, provided on he base for example, or by a groove and lug, or by oblique, rectilinear or curvilinear sides; these sections, as already stated, may exist along the whole length of the lateral shutter or along parts of this length, or yet again only over the length of the handling lever or levers.
  • these section and counter-sections exist at each end of the binding, over a length clearly greater than that of the handling lever, for example one-eighth to one-third of the total length of the binding; the base, over the intermediate length, instead of the said section, may form the release or guide or wedge according to questions of choice or expediency.
  • FIG. 1 is a general lateral view of a binding in the closed position (but without perforated leaves for the clarity of the drawing);
  • FIG. 2 is a side elevation, FIG. 3 and end view, and FIG. 4 a partial plan view, of the same binding in the closed position; 7
  • FIG. 5 is a section taken along line VV of FIG. 2;
  • FIG. 6 is a partial perspective, detailing both FIG. 1 and FIG. 5:
  • FIG. 7 similar to FIG. 6, shows the same binding during its opening movement
  • FIG. 8 similar to FIG. 6 shows the complete opening of the same binding, and FIG. 9 is respectively similar to FIG. 5;
  • FIG. 10 similar to FIG. 5, shows the binding in the wide open position, for example for its moulding or for riveting in its cover;
  • FIG. 1 1 is a detail on a larger scale of FIG. 5, showing the cooperation of the two oblique facets at the closing of the binding;
  • FIG. 12 is a sectional detail on a larger scale taken on line XII--XII of FIG. 2;
  • FIG. 13 similar to FIG. 6, shows a projection of reduced length
  • FIG. 14 similar to FIG. 11, shows another form of locking of the binding in the closed position
  • FIG. 15 similar to FIG. 11, shows an improvement involving a closing-stop for the binding
  • FIG. 16 similar to FIG. 5, shows an embodiment of reduced thickness
  • FIG. 17 similar to FIG. 12, shows another embodiment of the handling lever:
  • FIGS. 18 and 19, similar to FIG. 12 show, respectively in the closed position of the binding and during its opening, another embodiment of the handling lever of the locking of the binding in the closed position;
  • FIG. 20 is a plan view of one embodiment of the binding according to the invention.
  • FIG. 21 is a plan view of the base of the binding according to FIG. 20;
  • FIG. 22 is a section taken in FIG. 20 along line XXII-XXII, that is to say to the right of the handling lever;
  • FIG. 23 is similar to FIG. 22 but in the open position of the binding
  • FIG. 24 shows one phase of the opening movement of the binding according to FIG. 20
  • FIG. 25 shows one phase of the closing movement of the binding according to FIG. 20
  • FIG. 26 is a section taken in FIG. 20 along line XXVIXXVI, that is to say to the right of the outside ring;
  • FIG. 27 is similar to FIG. 26 but in the open position of the binding
  • FIG. 28 is a section taken in FIG. 20 along line XX- VIII-XXVIII, that is to say between two rings;
  • FIG. 29 is similar to FIG. 28 but in the open position of the binding
  • FIG. 30 is a section taken in FIG. 20 along line XXXXX, that is to say to the right of the inside ring:
  • FIG. 31 is similar to FIG. 30 but in the open position of the binding
  • FIG. 32 is a section taken in FIG. 20 along line XXXII-XXXII, that is to say between two inside rings;
  • FIG. 33 is similar to FIG. 32 but in the open position of the binding.
  • FIG. 1 With particular reference to FIG. 1 therein is shown a binding according to the invention executed as a single piece of plastic material whose cross-section (FIG. 5) is the same over almost the whole length of the binding (the different parts being described further on); this single piece comprises a base which is flat and rectangular and forms the back of the binding which is mounted in the spine of the cover (if there is a cover); the base 1 is provided, on one of its two long sides, 2 having a flange with a flat face facing downwards, and an oblique facet 3 which narrows upwardly (flange 2 and facet 3 are clearly seen on the detail according to FIG.
  • the base 1 is provided, on the other ofits long sides, with a raised edge 4, projecting from the base, limited by a longitudinal groove 5 opening from the base side and leaving on the opposite side, and over at least a part of its length, a thin part 6 (FIGS. 5 and 6); this thin part 6, common to the base 1 and a median shutter 7, forms a hinge between these two parts of the single piece (its role will be described further on in connection with FIGS.
  • the median shutter 7 bears, on the side opposite to the base 1, a set of half-rings, each half-ring terminating in a wedge 9 engageable in the opposite half-ring, and it is limited by another longitudinal groove 11 opening from the side opposite to the base and leaving on the base side, and over at least a part of its length, another thin part 12 (FIGS.
  • this thin part 12 forms a hinge as well between the median shutter 7 and a lateral shutter 13, which bears, on the side opposite to the base, the other set of half-rings 14;
  • the lateral shutter 13 is provided, on its long free side, with a flap 15, turned downwards, and forming a lip 16 turned towards the base 1, with an oblique facet 17 at the bottom, narrower at the bottom (clearly seen on the detail of FIG. 11).
  • the median shutter 7 and the lip 15 of the lateral shutter 13 are a little shorter than the base 1: above each of the two ends of base 1, the lateral shutter 13 is extended by a transverse handling lever 18 (detail according to FIG. 12); the upper face of the lever 18 is preferably scored or milled at its end 19 so as to facilitate, and even to suggest, its movement by the user (as described further on) and the lower face 21 of the lever 18 is machined (FIG. 12) in order to form a cam supported on the base 1 during the opening movement (described further on).
  • the elastic stress is supplied in so far as concerns the shutters 7 and 13 on one hand by the elasticity of the half-rings 8 and 14, and on the other, to a lesser degree, by the elasticity of the flange 4 of base 1 and of the flap of the lateral shutter 13. More precisely, the half-rings 8 exert a force F1 (FIG.
  • the binding (FIGS. 8 and 9) opened for adding or removing perforated leaves may be opened still further, for example as shown in FIG. 10, where the base 1 is easily accessible: on the one hand this facilitates the making of the binding by moulding or injection and on the other hand facilitates its mounting by a rivet or eyelet 22 in a cover when such a mounting is required. This wide-open position is also maintained by itself or without demanding an effort by the user to maintain the position.
  • the oblique facet 17 of the flap 15 is presented on the oblique facet 3 of base 1, then slides over it (FIG. 11), thus guiding the lip 16, which hooks elastically under the flange 2 of base 1.
  • the lip 16 and/or the flange 2 may exist over almost the whole length of base 1 or only over a part of this length (FIG. 13), or be subdivided into several parts.
  • the locking of the binding in the closed position may be formed, as described above, by the cooperation of the lip 16 of flap 15 of the lateral shutter 13 with the flange 2 of base 1, or by any other equivalent system; for example as shown in FIG. 13 this locking may be formed by the cooperation of a lug 24 of flap 15 with a groove 25 of base 1 (or yet again ofa groove of the flap with a lug ofthe base).
  • the binding according to the invention may be limited in its opening movement in a very simple way, by a stop 27 shown in FIG. 15, which prevents the binding from being closed more than recessary beyond the hooking of the lock.
  • the same result is obtained, by reducing, even by almost eliminating altogether, the free height between the top of base 1 and the bottom of shutters 7 and 13.
  • the binding may comprise a different number of them, for example a single lever 18, placed at one end or towards the center, or to the right of the lock or locks.
  • the handling lever 18 may be positioned in an appreciably different manner; for example, as shown in FIG. 17, it may be provided with a right-angled return piece bearing on side 32 of base 1 and its scored part 19 may with advantage be made noticeably oblique: thus the user is guided to exert an oblique force F6, which facilitates the release of the lock along arrow S.
  • the invention provides for the said locking of the binding in the closed position .by the lever itself: lip 16, with the oblique facet 17, is then placed on the inside face of the right-angled return piece 31 of lever 18, and flange 2, with the oblique facet 3, is then placed on side 32 of base 1; here also they may be replaced by a lock with lug and groove (as shown in FIG. 14).
  • the invention provides for still another arrangement; as FIG.
  • the right-angled return piece 31 of lever 18 is provided on the inner side with an oblique face 33 below which is an oblique facet 34 and base 1 is provided on its side with an oblique facet 35 below which is an oblique face 36; the two oblique faces 33 and 36 may be rectilinear or curvilinear.
  • the closed position they ensure by their cooperation the locking of the binding; for opening (FIG. 19), the said oblique force F6 of the user makes them slide one over the other with the pivoting of lever 18 (arrow S); for closing, the two oblique facets 34 and 35 slide one over the other guiding the relative movement of the lateral shutter in relation to the base.
  • this binding is composed as a single piece of plastic material whose cross-section (FIGS. 22 and following) is appreciably the same over the whole length of the binding; this single piece comprises a flat rectangular base 1 serving as a support for the handling lever 18; base 1 forms the back of the binding, and it is fixed to the back of the cover, for example by using pierced holes 42 (FIG.
  • the base 1 is provided over about one-sixth from the end of one of its long sides, with a flange 2 having a flat face facing downwards, and with an oblique facet 3 which narrows upwardly (FIGS. 22 and 26); after an empty space (FIG. 28), the same edge of base 1 is provided, in the central part, with a guiding projection 43 (FIGS. 21 and 30-32); base 1 is provided, on the other of its two long sides with an edge 4 projecting from the base 1, limited by a longitudinal groove 5 opening from the base side, complete between and far from he rings (FIGS. 28 and 32), incomplete and leaving a thin part 6 here and there to the right of the rings (FIGS.
  • the handling lever 18, integral with flap l and the lateral shutter 13 bears a nipple 44 on part 21 of the base 1 (FIG. 22); thus, in the opening movement, from he closed position (FIG. 22) to the open position (FIG.
  • a binding for perforated leaves comprising a body constituted as a single piece of plastic material including elongated base having opposite longitudinal edges, a first shutter hingeably connected to the base at one of the edges thereof, a second shutter hingeably connected to the first shutter, the hingeable connections between the base and first shutter and between the first and second shutters being provided by reduction of material thickness to form hinges there along, rings for perforated leaves constituted as individual half-rings on each of said shutters facing one another, said second shutter having a free edge proximate the other of said edges of the base, locking means on said free edge of the shutter and on said other edge of the base for locking the same together in a closed position of the binding, said half rings being positioned on the shutters for engageably closing in the closed position of the binding, and actuator means coupled to said second shutter in extending cantilever fashion for pivotably moving the second shutter with respect to the first shutter about the hinge connection therebetween to selectively release the locking means and then enable the first shutter to pivotably move with respect to he base about the hinge connection there
  • a binding as claimed in claim 1 wherein said locking means comprises a projection on said free edge of the second shutter for engaging at least a portion of the other edge of the base in locked position.
  • a binding as claimed in claim 3 comprising means on said other edge of the base for engaging the locking means on the second shutter to guide the latter when it is bein brought to lockin position.
  • a tnding as claime in claim 3 comprising means on said means facing said base to engage the same and permit the means to unlock the locking means.
  • said base includes at said one edge thereof an upright projection to which said first shutter is connected, said upright projection having an upper inner edge at which a longitudinal groove is provided to form the reduction of material and the hinge connection between the base and first shutter.
  • a binding as claimed in claim 8 wherein a longitudinal groove is provided between the first and second shutters in the upper surface thereof to form the reduction material and the hinge connection between the shutters.

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  • Sheet Holders (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US00090411A 1969-11-18 1970-11-17 Binding for perforated leaves made up of a singleplastic piece Expired - Lifetime US3728036A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6939668A FR2067835A5 (enrdf_load_stackoverflow) 1969-11-18 1969-11-18

Publications (1)

Publication Number Publication Date
US3728036A true US3728036A (en) 1973-04-17

Family

ID=9043253

Family Applications (1)

Application Number Title Priority Date Filing Date
US00090411A Expired - Lifetime US3728036A (en) 1969-11-18 1970-11-17 Binding for perforated leaves made up of a singleplastic piece

Country Status (14)

Country Link
US (1) US3728036A (enrdf_load_stackoverflow)
AU (1) AU2240870A (enrdf_load_stackoverflow)
BE (1) BE759031A (enrdf_load_stackoverflow)
CA (1) CA920013A (enrdf_load_stackoverflow)
CH (1) CH528984A (enrdf_load_stackoverflow)
CS (1) CS152383B2 (enrdf_load_stackoverflow)
DE (1) DE2057700A1 (enrdf_load_stackoverflow)
ES (1) ES192876Y (enrdf_load_stackoverflow)
FR (1) FR2067835A5 (enrdf_load_stackoverflow)
GB (1) GB1326393A (enrdf_load_stackoverflow)
IL (1) IL35648A (enrdf_load_stackoverflow)
NL (1) NL7016914A (enrdf_load_stackoverflow)
OA (1) OA03526A (enrdf_load_stackoverflow)
ZA (1) ZA707756B (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607970A (en) * 1985-02-05 1986-08-26 Ted Scudder Binder for perforated sheets
USD389182S (en) 1996-01-24 1998-01-13 Leco Stationery Manufacturing Company Limited Ring binder
US20040013463A1 (en) * 2002-07-19 2004-01-22 To Chun Yuen Ring binder mechanism
US20050207826A1 (en) * 2004-03-15 2005-09-22 World Wide Stationery Manufacturing Company, Limited Soft close ring binder mechanism with mating ring tips
US20050260029A1 (en) * 2004-05-20 2005-11-24 Hong Kong Stationery Manufacturing Co., Ltd. Lever arch binder mechanism with complementary ring tips
US20050260030A1 (en) * 2004-05-20 2005-11-24 Hong Kong Stationery Manufacturing Co., Ltd. D-ring binder mechanism with complementary ring tips
US20050271459A1 (en) * 2004-06-03 2005-12-08 World Wide Stationery Mfg. Co., Ltd. Interlocking ring tip formations for paired ring members of a ring binder mechanism
USD533588S1 (en) 2004-06-03 2006-12-12 World Wide Stationary Manufacturing Company, Limited Ring for a ring binder mechanism
US20080080925A1 (en) * 2006-09-28 2008-04-03 World Wide Stationery Mfg. Co., Ltd. Ring Binder Mechanism with a Sliding Hinge Plate
US20080080926A1 (en) * 2006-09-28 2008-04-03 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism with sliding hinge plate
US20090110470A1 (en) * 2007-10-31 2009-04-30 World Wide Stationery, Mfg. Co., Ltd. Ring binder mechanism with polymeric housing and actuator
USD598494S1 (en) * 2007-07-03 2009-08-18 World Wide Stationery Manufacturing Company Limited Binding ring
US20100284729A1 (en) * 2007-10-31 2010-11-11 World Wide Stationery Mfg. Co., Ltd. Ring Binder Mechanism
US20110311300A1 (en) * 2010-06-09 2011-12-22 World Wide Stationery Manufacturing Co., Ltd. Ring binder mechanism having unitary structure
US8480327B2 (en) 2009-01-16 2013-07-09 Hans Johann Horn Binder apparatus
US9895922B2 (en) 2015-02-05 2018-02-20 World Wide Stationery Mfg. Co., Ltd. Ring binder with interlocking ring members

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2265858A (en) * 1992-04-08 1993-10-13 Gerald John Knee Plastics ring binder for looseleaf binding of papers
CN101037069A (zh) * 2006-03-15 2007-09-19 国际文具制造厂有限公司 环形夹机构
US7950866B2 (en) * 2007-08-31 2011-05-31 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism with polymeric housing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183913A (en) * 1961-06-19 1965-05-18 Frodermann Hermann Loose-leaf binder mechanism
FR1576584A (enrdf_load_stackoverflow) * 1968-06-10 1969-08-01
US3612709A (en) * 1968-09-26 1971-10-12 King Jim Co Ltd Looseleaf binder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183913A (en) * 1961-06-19 1965-05-18 Frodermann Hermann Loose-leaf binder mechanism
FR1576584A (enrdf_load_stackoverflow) * 1968-06-10 1969-08-01
US3612709A (en) * 1968-09-26 1971-10-12 King Jim Co Ltd Looseleaf binder

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607970A (en) * 1985-02-05 1986-08-26 Ted Scudder Binder for perforated sheets
USD389182S (en) 1996-01-24 1998-01-13 Leco Stationery Manufacturing Company Limited Ring binder
US7360962B2 (en) * 2002-07-19 2008-04-22 World Wide Stationery Manufacturing Company Limited Ring binder mechanism
US20040013463A1 (en) * 2002-07-19 2004-01-22 To Chun Yuen Ring binder mechanism
US20050207826A1 (en) * 2004-03-15 2005-09-22 World Wide Stationery Manufacturing Company, Limited Soft close ring binder mechanism with mating ring tips
US8573876B2 (en) 2004-03-15 2013-11-05 World Wide Stationery Manufacturing Company, Limited Soft close ring binder mechanism with mating ring tips
US20050260029A1 (en) * 2004-05-20 2005-11-24 Hong Kong Stationery Manufacturing Co., Ltd. Lever arch binder mechanism with complementary ring tips
US20050260030A1 (en) * 2004-05-20 2005-11-24 Hong Kong Stationery Manufacturing Co., Ltd. D-ring binder mechanism with complementary ring tips
US7293932B2 (en) 2004-05-20 2007-11-13 Hong Kong Stationery Manufacturing Co., Ltd. Lever arch binder mechanism with complementary ring tips
US20050271459A1 (en) * 2004-06-03 2005-12-08 World Wide Stationery Mfg. Co., Ltd. Interlocking ring tip formations for paired ring members of a ring binder mechanism
USD533588S1 (en) 2004-06-03 2006-12-12 World Wide Stationary Manufacturing Company, Limited Ring for a ring binder mechanism
US20080080926A1 (en) * 2006-09-28 2008-04-03 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism with sliding hinge plate
US20080080925A1 (en) * 2006-09-28 2008-04-03 World Wide Stationery Mfg. Co., Ltd. Ring Binder Mechanism with a Sliding Hinge Plate
US7600939B2 (en) 2006-09-28 2009-10-13 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism with sliding hinge plate
USD598494S1 (en) * 2007-07-03 2009-08-18 World Wide Stationery Manufacturing Company Limited Binding ring
US20090110470A1 (en) * 2007-10-31 2009-04-30 World Wide Stationery, Mfg. Co., Ltd. Ring binder mechanism with polymeric housing and actuator
US8147160B2 (en) 2007-10-31 2012-04-03 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism with polymeric housing and actuator
US20100284729A1 (en) * 2007-10-31 2010-11-11 World Wide Stationery Mfg. Co., Ltd. Ring Binder Mechanism
US9688091B2 (en) 2007-10-31 2017-06-27 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism
US8480327B2 (en) 2009-01-16 2013-07-09 Hans Johann Horn Binder apparatus
US20110311300A1 (en) * 2010-06-09 2011-12-22 World Wide Stationery Manufacturing Co., Ltd. Ring binder mechanism having unitary structure
US8851783B2 (en) 2010-06-09 2014-10-07 World Wide Stationary Mfg. Co. Ltd. Ring binder mechanism having snap-in ring members
US8899865B2 (en) 2010-06-09 2014-12-02 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism having retaining system on ring members
US8899864B2 (en) * 2010-06-09 2014-12-02 World Wide Stationery Mfg., Co., Ltd. Ring binder mechanism having unitary structure
US9067457B2 (en) 2010-06-09 2015-06-30 Cooper Technologies Company Ring binder mechanism having unitary structure
US9656507B2 (en) 2010-06-09 2017-05-23 World Wide Stationery Mfg. Co., Ltd. Ring binder mechanism having snap-in ring members
US9895922B2 (en) 2015-02-05 2018-02-20 World Wide Stationery Mfg. Co., Ltd. Ring binder with interlocking ring members

Also Published As

Publication number Publication date
NL7016914A (enrdf_load_stackoverflow) 1971-05-21
IL35648A0 (en) 1971-01-28
ES192876U (es) 1974-11-01
CA920013A (en) 1973-01-30
ZA707756B (en) 1971-08-25
ES192876Y (es) 1975-03-01
OA03526A (fr) 1971-03-30
AU2240870A (en) 1972-05-25
CS152383B2 (enrdf_load_stackoverflow) 1973-12-19
FR2067835A5 (enrdf_load_stackoverflow) 1971-08-20
IL35648A (en) 1973-05-31
BE759031A (fr) 1971-04-30
CH528984A (fr) 1972-10-15
DE2057700A1 (de) 1971-05-27
GB1326393A (en) 1973-08-08

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