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Publication numberUS3837680 A
Publication typeGrant
Publication dateSep 24, 1974
Filing dateAug 25, 1972
Priority dateAug 25, 1972
Publication numberUS 3837680 A, US 3837680A, US-A-3837680, US3837680 A, US3837680A
InventorsCimini P
Original AssigneeCimini P
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Ring binder
US 3837680 A
Abstract
A book structure that has two loose-leaf binders with outwardly folding end covers. Inwardly directed covers for the two loose-leaf binders are joined together and overlap in a mutually sliding relation. Sleeves that engage the edges of the overlapping covers, as well as a stop on one of the covers, enables the central portion of the book structure to form a stable, rigid and generally flat surface when fully extended.
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Description  (OCR text may contain errors)

United States Patent Cimini Sept. 24, 1974 [54] RING BINDER FOREIGN PATENTS OR APPLICATIONS Inventor; Pete! Cimini, 120 Northwood 551,591 10 1956 Belgium 281 16 Newington, Cenn- 06111 783,401 4/1968 Canada 694,777 8/1940 German [22] 1972 320,349 5/1957 Switzerliind 281/16 21 Appl. No.2 283,935

Primary Examiner-Jerome Schnall 52 US. Cl. 281/16, 281/3 R, 281/29, Ammey Age, Sim),

402/80 R [51] Int. Cl B42d 3/00 ABSTRACT Field of Search 281/16, 3 R 17; 402/80 R A book structure that has two loose-leaf binders with outwardly folding end covers. Inwardly directed cov- References Clted ers for the two loose-leaf binders are joined together UNITED STATES PATENTS and overlap in a mutually sliding relation Sleeves that 415,798 11 1889 Skinner 281 16 engage the edges of the Overlapping Covers, as as 464,417 12/1891 Bevin 281/16 x a p o one o the o a e the central P 1,12l,l97 12/1914 McMillan.... 281/16 X tion of the book structure to form a stable, rigid and 1,167,618 l/l916 Beard 1 281/16 generally flat surface when fully extended. 2,333,523 11/1943 Lohun 281/16 2,716,985 9/1955 Wolf 281 16 2 Claims, 4 Drawing Figures RING BINDER BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to structures for books and, more particularly, to a pair of loose-leaf binders that have overlapping covers for sliding movement to form an extended, rigid surface, and the like.

2. Prior Art Books that have several folded covers which can be opened into an extended surface have been developed for a number of purposes. Frequently, these books comprise an array of relatively stiff surfaces. Laces, or the like, at edges that are common to adjacent pairs of these stiff surfaces join the entire structure together. This construction, however, fails to satisfy the need for a rigid, relatively uncollapsible structure that can be borne on the knees of the user and sustain normal pencil pressures without folding up.

For example, scouting sporting events, and the like, requires a book structure that can be conveniently carried in a compact unit. The book structure, however, should open into a relatively rigid surface that displays an array of one or more readily identified pages which will enable game plays and the like to be recorded swiftly. The book structure also should remain open and sustain forces imposed by the normal movement and jostling that usually is encountered in a stadium or in crowded areas. Clearly, the flexibly joined, multiplecover book structures that characterize the prior art fail to provide this necessary rigidity. Accordingly, there is a need to provide a relatively rigid, albeit selectively collapsible book structure.

SUMMARY These and other problems that have characterized the prior art are, to a large extent, overcome through the principles of the invention. For example, a typical book structure that embodies principles of the invention has a pair of loose-leaf binders that are parallel to and spaced from each other. Inwardly directed covers extend from respective binders to which they are joined, toward the opposite loose-leaf binder. These inwardly directed covers, moreover, overlap in sliding relation. The mutually sliding edges of these covers are engaged in sleeves. These sleeves act as guides for the selectively sliding covers and also serve to hold the covers in the overlapping relation.

A movable stop has a flat base portion and a stop portion that protrudes perpendicularly from the base. The base portion is buried in the plies of the uppermost of the overlapping covers and the stop portion protrudes through a slot that is cut into the surface of that cover in a direction perpendicular to the parallel ring binders. The stop can be moved back-and-forth in the slot with the application to the protruding stop portion of a moderate amount of finger-pressure. An edge of the stop portion engages the edge of the lowermost of the two inwardly directed covers and thus braces these two covers against each other when the book structure is fully extended.

A further feature of the invention provides for a dummy cover that is attached to the ring binder which is joined to the lowermost cover. This dummy cover matches the thickness of the uppermost of the two inwardly directed covers. Thus, the dummy cover establishes a relatively smooth, flat writing surface across the expanse of both of the inwardly directed covers when the book structure is fully extended.

A clip is also secured to one or both of the sleeves in order to engage the papers on the extended writing surface that is provided by the book structure. These clips present an additional means for establishing a stable writing surface, retaining an extra piece of paper or the like on the extended surface, and for preventing the pages on that surface from being readily torn away from the binder rings because of movement in a crowd, wind or other environment-related conditions.

Thus there is provided in accordance with the invention an improved book structure. For a more detailed understanding of the invention, attention is invited to the accompanying drawing and the following description. It will be apparent that the invention is subject to many modifications. Consequently, the representative embodiments illustrated herein are not be held to limit the appended claims.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a front elevation of a typical book structure in the fully extended condition that embodies principles of the invention;

FIG. 2 is a rear elevation of the book structure that is shown in FIG. 1;

FIG. 3 is a plan view of the top edge of the book structure that is shown in FIGS. 1 and 2; and

FIG. 4 is a plan view of the top edge of the book structure in the retracted condition to further illustrate principles of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS For a more complete appreciation of the invention, FIG. 1 shows a typical book structure in accordance with the principles of the invention. Thus a pair of parallel disposed ring binders 10 and 11 are spaced from each other by inwardly disposed covers 12 and 13.

Preferably, the covers 12 and 13 are formed of stiff, multiple-ply carboard which is encased in vinyl or some other suitable material. The covers 12 and 13 are of about equal width and are arranged in an overlapping relation, the cover 12 being uppermost and the cover 13 being lowermost, as viewed in FIG. 1.

The covers 12 and 13 each terminate in respective edges 14 and 15 that are parallel to the longitudinal dimensions of the ring binders 10 and 11. These edges overlap slightly when the book structure is fully extended as shown in FIGS. 2 and 3.

Sleeves l6 and 17 of spring steel, or some other suitable material, engage the overlapping edges of the covers 12 and 13 that are perpendicular to the longitudinal dimension of the ring binders l0 and 11. These sleeves 16 and 17 press the edges of the two overlapping covers 12 and 13 together in order to prevent the covers from separating. Further, the sleeves 16 and 17 apply enough pressure to the covers to generate friction forces of sufficient magnitude to prevent these covers from sliding relative to each other. These friction forces, however, will not prevent manual pressures applied to the ring binders 10 and 11 from selectively extending or collapsing the book structure at will.

A spring clip 20 is secured to the sleeve 16 in order to engage extra papers (not shown) against uppermost surface 21 of the cover 12.

In accordance with a further feature of the invention, a dummy cover 22 is mounted on ring binder 11 and bears against the lowermost inwardly directed cover 13. The dummy cover 22 has a thickness that is about equal to the thickness of the cover 12. Accordingly, uppermost surface 23 of the dummy cover 22 is essentially in the same plane as the surface 21, thereby establishing a generally continuous writing surface that is almost two cover widths in breadth.

Turning now to FIG. 2, a stop 24 formed of metal or hard plastic, for example, slides in a slot 25 that is cut into lowermost surface 26 of cover 12. The stop 24 has a protruding stop member 27 (FIGS. 3 and 4) that abuts the edge of the cover 13 in order to further impede the movement of the cover 13 toward the ring binder when the book structure is in either full or partly extended position. As shown in broken lines in FIG. 2, the stop 24 has a base portion 30 that is received in a track or path 31 formed within the plies of the cover 12. The base portions 30, moreover, is disposed perpendicularly to the stop member 27. The stop 24 is so received within the plies of the cover 12, moreover, that it moves, or slides along the length of the slot 25 in response to a moderate amount of thumbpressure. If a force is applied to move the cover 13 toward the ring binder 10 that is less than the sum of the frictional forces applied to the covers 12 and 13 through the sleeves l6 and 17 and a force that is equal in magnitude ,to the thumb-pressure force that is required to move the stop 24, the covers 12 and 13 will not move relative to each other.

The illustrative book structure is completed with two outwardly disposed covers 32 and 33 that are flexibly connected to the respective ring binders 10 and 11, which also may be selectively braced. A fastener 34 is attached to the edges of the covers 32 and 33 in order to lock the entire book structure into a closed, compact unit when it is being carried or not otherwise in use.

In operation, the stop 24 is pressed against the edge of the cover 13 in order to retain the book structure in an extended position. When fully extended, the dummy cover 22 is placed against the cover 13 in the recess that is formed by the overlapping engagement of the uppermost cover 12 and the lowermost cover 13. Papers (not shown) are rest on the flat area established by the uppermost surfaces 21 and 23 with the aid of the ring binders 10 and 11 and the spring clip 20.

When the book structure is to be collapsed, the papers (not shown) on the flat area are removed, enclosed within the book, or folded, and the like. The stop 24 is pressed away from the edge 15 of the cover 13 and is moved toward the ring binder 10. The book covers 12 and 13 then are pressed into a fully overlapping relation as shown in FIG. 4. During this relative movement of the covers 12 and 13, the dummy cover 22 either rides up and over the uppermost surface 21 of the cover 12 or is flipped into engagement with the outwardly directed cover 33.

The covers 32 and 33 are folded in against the covers 12 and 13 and the fastener 34 is snapped together to lock the book structure into a compact unit.

I claim:

1. A book structure for writing sheets in loose form, said structure comprising first and second generally rectangular rigid covers in horizontally spaced parallel, sliding and overlapping surface relation, said covers each having respective parallel edges, first and second horizontally spaced and parallel ring binders each hinged on one side of the sides thereof to oppositely disposed parallel edges of said first and second covers respectively, said hinged edges being spaced from overlapping portions of said first and second covers, third and fourth rigid covers in spaced relation to each other, each hinged to a respective other one of the sides of said parallel ring binders, a pair of horizontally spaced parallel sleeves disposed transversely relative to said first and second ring binders and in clamping engagement with overlapping edges of said first and second rigid covers to press together said overlapping edges in order to prevent said first and second covers from separating, and to generate friction forces between said overlapping covers that tend to resist sliding movement, one of said first and second rigid covers having a slot formed therein in order to establish a track within said one cover, said slot and track being generally transverse to said first and second ring binders and extending to the adjacent overlapping edge of the other of said first and second covers, a selectively slidable stop having a portion that is received in said track and in frictional engagement therewith and a protruding stop member extending from said slidable portion through said slot to selectively bear against said adjacent overlapping edge of the other of said first and second covers in order to selectively retain first and second covers in a predetermined degree of overlapping relation, and a dummy cover having a thickness that is about equal to the thickness of one of said first and second covers, said dummy cover being mounted on rings of the ring binder which is hinged to the other of said first and second covers and being selectively placed against the other of said first and second cover in order to form an essentially flat surface of almost two covers in breadth.

2. A book structure according to claim 1 further comprising at least one clip secured to one of said sleeves to bear against at least one of said first and second covers.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US415798 *Jun 12, 1888Nov 26, 1889 Albert b
US464417 *Jul 30, 1891Dec 1, 1891 Index for letter or account books
US1121197 *Dec 15, 1914 Loose-leaf book.
US1167618 *Jan 11, 1915Jan 11, 1916Robert N BeardPortable display-book.
US2333523 *Mar 21, 1942Nov 2, 1943Homer H CohunLoose-leaf binder and brief case
US2716985 *Feb 24, 1955Sep 6, 1955Major Leather Goods Mfg CoCombination loose leaf notebook and portable desk
BE551591A * Title not available
CA783401A *Apr 23, 1968Ropchan GeorgeBinders for writing materials in loose sheet form
CH320349A * Title not available
DE694777C *Jan 12, 1939Aug 8, 1940Rudolf LisselPlatte zur Aufnahme von Notizen oder eines Notizblockes
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5174674 *Dec 26, 1991Dec 29, 1992Economy Color Card, Inc.Sample book
US5213370 *Mar 23, 1992May 25, 1993Hood Judy MExpandable loose-leaf volume
US5911441 *Feb 21, 1997Jun 15, 1999Avery Dennison CorporationZippered three-ring binder carrying case with additional external zippered cover for notepad
US5975576 *Jul 19, 1996Nov 2, 1999Vogel; JurgenFile with a modular construction
US6161979 *Sep 13, 1999Dec 19, 2000Avery Dennison CorporationDual binder with ring binder compartment and storage compartment
US6213668Sep 21, 1998Apr 10, 2001Acco Brands, Inc.Folder having covers with support portions
US6364559Mar 2, 2001Apr 2, 2002Acco Brands, Inc.Folder having covers with support portions
US6379070 *Oct 6, 2000Apr 30, 2002Eugene T. ButchmaBinder apparatus
US6644882Mar 22, 2002Nov 11, 2003Acco Brands, Inc.Folder
US6695519May 7, 2002Feb 24, 2004Meadwestvaco CorporationDouble portfolio
US6773195May 7, 2002Aug 10, 2004Meadwestvaco CorporationNotebook with portfolio cover
US7399136Jan 6, 2006Jul 15, 2008Staples The Office Superstore LlcMolded binder
US7524127Dec 12, 2005Apr 28, 2009Staples The Office Superstore, LlcRing binder mechanism
US7527449Dec 12, 2005May 5, 2009Staples The Office Superstore, LlcRing binder mechanism
US7661900 *Mar 31, 2004Feb 16, 2010Adam MerzonBinder
US7674062Apr 11, 2006Mar 9, 2010Hans Johann HornRing binder mechanism
US7699553 *Jun 1, 2004Apr 20, 2010Adam MerzonBinder and multi-function binder hold down page
US7823926Aug 1, 2005Nov 2, 2010Meadwestvaco CorporationDual notebook
US20030210948 *May 7, 2002Nov 13, 2003James Bobby G.Notebook with supplemental bound component
US20050226681 *Mar 31, 2004Oct 13, 2005Adam MerzonBinder
US20060228164 *Apr 11, 2006Oct 12, 2006Horn Hans JRing binder mechanism
US20070024047 *Aug 1, 2005Feb 1, 2007Richied Kenneth PDual notebook
Classifications
U.S. Classification281/16, 281/3.1, 281/29, 402/80.00R
International ClassificationB42F13/00
Cooperative ClassificationB42F13/0033
European ClassificationB42F13/00B8