Stock material or miscellaneous articles – Sheet facing and longitudinally noncoextensive with web or...
Patent
1992-11-03
1994-10-25
Thomas, Alexander S.
Stock material or miscellaneous articles
Sheet facing and longitudinally noncoextensive with web or...
428 99, 428130, 428137, 428192, 283 34, 402 4, B32B 306, B32B 310
Patent
active
053587618
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND
This invention relates to folded sheet material, regardless of whether it is in a folded or unfolded condition.
It is known from my earlier U.S. patent application Ser. No. 213,582 filed on Jun. 23, 1988 abandoned, which was filed as application Ser. No. 213,582, filed on Jun. 23, 1988 abandoned, and refiled as continuation application Ser. No. 721,910 filed on Jun. 20, 1991, now U.S. Pat. No. 5,156,898, PCT Patent Application WO 87/04284 to provide a sheet of material (hereby defined as the "sheet material" defined in my said earlier specification, which definition is hereby intended by the expression "as hereinbefore defined") having a first set of concertina folds (which term means that the folds are alternately towards and away from the front of the sheet) and, so as to be transverse to these when the sheet is folded with these folds, a second set of concertina folds, the sheet being provided with two diagonally opposite stiff portions at segments thereof, which segments are at or near diagonally opposite corners of the sheet and defined by fold/s and/or edge/s thereof. This was intended for use by one stiff portion being held in the hand and the opposite stiff portion then being moved away from it to unfold the sheet with a single movement.
THE INVENTION
The inventor has appreciated that a sheet of this general type could usefully be engaged in a looseleaf or similar binder to provide a relatively mall thickness at the spine or binding portion and yet open out to a considerable extent, far greater than with existing Z-shaped inserts for such binders, and in particular with a single movement aided by the stiff unfolding portion.
Accordingly, the present invention provides a sheet of material having a first set of concertina folds and, so as to be transverse to these when the sheet is folded with these folds, a second set of concertina folds, the sheet being provided with two diagonally opposite holding portions at segments thereof, which segments are at or near diagonally opposite corners of the sheet and defined by folds and/or edges thereof, one of the holding portions being stiff and the opposite holding portion having a part extending beyond the remainder of the sheet when folded so as to be suitable to be held in a binder. to a usual type of pre-bound book, as it will be readily seen that the single movement and large extent of opening would be a great advantage also with a bound printed book, for example.
Such a sheet can have any of the further features disclosed in the description of my said earlier specification.
Further, it should be noted that the beyond extending part runs substantially the whole length of an edge of the appertaining segment. The beyond extending part extends beyond an edge of the appertaining segment which edge is also part of an edge of the sheet. The beyond extending part is provided with punch-holes suitable for a ring binder, and the punch-holes are arranged in a line in groups of three. The beyond extending part is reinforced around the punch-holes. The diagonally opposite folding portions are stiff. The beyond extending part and at least a neighboring part of the appertaining portions are reinforced and stiff. The material apart from the stiff portion is of paper-like plastics material and is tear-resistant.
The invention is further concerned with a sheet of material having two diagonally opposite folding portions, one being stiff and the other extending beyond the remainder of the sheet when folded, and the sheet is more specifically defined as hereinbefore set forth.
The invention is also concerned with a binder or bound volume which comprises at least one sheet of the type hereinbefore defined.
BRIEF DESCRIPTION OF THE DRAWINGS
Reference will now be made by way of example to the accompanying drawings, in which:
FIG. 1 corresponds to FIG. 2 of my said earlier specification and shows a sheet embodying the present invention partly open; and
FIG. 2 corresponds to FIG. 4 of my said earlier specification and shows the sheet of an alternative embodiment
REFERENCES:
patent: 1574838 (1926-03-01), Moore
patent: 1687304 (1928-10-01), Morris
patent: 4595309 (1916-06-01), Chinchar
patent: 5156898 (1992-10-01), McDonald
LandOfFree
Folded sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Folded sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Folded sheet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-133954