This invention relates to notebooks or binders of the “wrap-around” type.
Conventional ring binder notebooks have a ring assembly secured to the binding or to one of the two covers of the notebook near the binding. The ring mechanism normally has three rings mounted so that there are two stable positions for the rings, with the rings being either open to facilitate insertion or removal of sheets of paper, or closed to hold the sheets in place. To obtain these two stable positions for the rings, an assembly is provided using two long stiff rectangular plates, known in the binder field as “frames”.
These two frames are pivotally coupled together along an inner longitudinal edge of each frame. A springy overlying metal strip known in the binder field as a “shield”, engages the outer edges of the two strips and biases them inward to provide two bistable states for the frames, with the frames making an oblique angle relative to one another, with the central hinge line shifting in one direction for one of the stable positions, and in the opposite direction for the other stable position.
The shield and frames assembly is normally riveted flat against the spine of the notebook or into one of the covers of the notebook, with the shield exposed and the frames concealed by proximity to the spine or one cover of the notebook. The rings extend through clearance openings in the shield and are secured to the frames, with all six partial rings being secured to the sides of the frames facing the shield. The exposed shield is normally plated with nickel or chromium, while the concealed frames are normally formed of flat steel strips, and are not coated, and have exposed rivet protrusions where the half rings are secured to the frames.
In contrast to conventional notebooks, reference is made to C. K. Young U.S. Pat. No. 6,168,338 entitled “Wrap Around Notebook”, granted Jan. 2, 2001. The Young patent has advantages for certain applications as compared with conventional binders, in that it can more readily lie flat with the covers open, and with the covers and all of the sheets overlying one another so that it takes up very little space on a podium, or a small desk or table, for examples.
In the construction of the Young wrap-around notebook, it may be noted that three of the half rings are secured (normally riveted) to one side of one of the frame members facing the shield, and that the mating set of three half rings are secured to the other side of the other frame member facing away from the shield. In addition, the frame and shield assembly is not secured flat against the spine, but the shield is pivotally mounted to a hinge plate, which is riveted to one of the covers of the Young notebook adjacent the spine.
The notebook disclosed in the Young patent has certain shortcomings. Thus, for example, it can be difficult to secure the hinge plate to the spine or to a cover of the assembly with the hinge plate being in a different plane from the upper surface of the shield. In addition, the flat unfinished frames with protruding ring rivets are rough and unsightly, so that in some cases a second shield was considered desirable to improve the appearance of the notebook. Further, the length of the frame and shield assembly is longer than necessary in view of the fact that “boosters” to assist in opening the rings are not needed.
In accordance with the present invention a wrap-around notebook or binder includes improved features including one or more of the following:
1. The shield has laterally extending strips along its length, on the side of the shield where the half rings are secured to the top of the frame toward the shield, and the strips are curled to form a hinge mating with a similar curl on a hinge plate, and with the plane of the hinge plate aligned with the maximum extent of the shield/frame assembly, either the shield side or the frame side thereof. The hinge is preferably formed by the alternate curls on the hinge plate and on the strips extending from the shield, with a pivot wire extending through the curls.
2. The frames may be convexly curved, with recessed areas to receive ring rivets, to present a smooth exposed frame side configuration, both for mechanical and aesthetic considerations.
3. The frame/shield assemblies are shortened with respect to the height of the notebook to reduce costs, and the ends are curved to avoid sharp corners, and to improve the aesthetic appearance of the shield/frame assembly.
4. The single hinge plate extending the majority of the length of the frame/shield assembly may be replaced by two small hinge plates located to include the the rivet openings for securing the shield/frame assembly to the binder, as a cost reduction step.
5. The exposed frame members are plated with a silver colored plating, such as nickel, zinc or chromium, to preclude rusting and to provide a more aesthetically pleasing appearance.
6. The shield/frame/hinge plate assembly may be mounted in the notebook with the hinge pivot axis near a corner between the spine and one cover of the notebook with the shield side facing the front cover of the notebook.
7. The ring assembly with features as outlined above may be employed without the hinge plate for use in a “spiral notebook” type configuration.
8. The hinge line between the shield and the hinge plate may be spaced away from the shield by a clearance distance so that the binder will lay flat with either cover folded under the notebook assembly.
Advantages of the present design include an improved aesthetic configuration, a reduction in costs resulting from eliminating the need for a second shield, reduction in the length of the ring assembly, and optionally using two small hinge plates instead of one long hinge plate.
Other objects, features and advantages of the invention will become apparent from a consideration of the following detailed description and the accompanying drawings.
While the specification describes particular embodiments of the present invention, those of ordinary skill can devise variations of the present invention without departing from the inventive concept.
Referring more particularly to the drawings,
The rivet holes 36 receive rivets to secure the hinge plate and ring assembly to the notebook.
In operation, the two convexly curved frames 42 and 44 are pivotally coupled along line 46 in a conventional manner. The shield 26 is formed of springy, chrome-plated material, and exerts an inwardly directed biasing force on the outer edges of frames 42 and 44. The set of half rings 22″ extend through clearance holes in the shield, and are secured to the upper side of frame 44 facing the shield. The other set of half rings 22′ are secured to the bottom of frame 42, the side facing away from shield 26.
When the rings are opened, the pivot line 46 shifts upward, toward the shield 26, to the second bistable position.
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Concerning dimensions, for holding 8½×11-inch sheets, the dimensions of the covers of the binders would normally be approximately 9½ by 11½ inches. It is also noted that in the United States for 8½×11 inch size paper, the rings in three ring binders are normally spaced 4¼ inches apart, or with the outer rings about 8½ inches apart. For notebooks of this size, in one specific illustrative embodiment, the length of the ring assembly including the shields was slightly less than 9½ inches, and the rivet holes on the hinge plate or plates were spaced apart by about 7½ inches (7.562 inches). Thus, the length of the ring assembly including the curved shields may be substantially less than the 11½ inch height of the notebook, and may be ½ inch or 1 inch or more, less at each end of the ring assembly, relative to the notebook in which it is mounted. The foregoing dimensions are given by way of example and not of limitation. For A-4 paper and other size sheets the dimensions would be modified to implement the principles and constructions as discussed more generally in this specification.
In conclusion, in the foregoing detailed description and in the accompanying drawings, illustrative embodiments of the invention have been disclosed. It is to be understood however, that various changes and modifications may be made without departing from the sprit and scope of the invention. Thus, by way of example and not of limitation, different size notebooks and binders may be employed, with corresponding different dimensions for the ring assemblies. Binders with only two, or with many rings may be employed. The shield and frames assembly as disclosed may be used without the hinge plate(s), and front and rear covers employed without a spine panel, and with the covers apertured to fit on the rings. Accordingly, the invention is not limited to the precise embodiments shown in the drawings and described in detail hereinabove.