Optics: image projectors – Picture carrier
Reexamination Certificate
2001-03-22
2003-07-01
Adams, Russell (Department: 2851)
Optics: image projectors
Picture carrier
C353SDIG005
Reexamination Certificate
active
06585381
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims the priority of the filing in Switzerland, Swiss application number: 2000 0592/00, of Mar. 28, 2000.
STATEMENT REGARDING FEDERALLY SPONSORED R&D
Not applicable.
REFERENCE TO A MICROFICHE APPENDIX
Not applicable.
BACKGROUND OF THE INVENTION
1. Technical Field
The invention is in the field of filing documents in files and in particular in that of envelopes used to file and to present transparencies for overhead projectors.
2. Description of Prior Art
In order to present transparencies by means of an overhead projector it is necessary to take the transparencies, or the storage pockets with the transparencies, out of their filing system, in general in taking them out of their ring binder, and to put each transparency back there after projection. To gain time, the shown transparencies are often piled up on the table, to be put back in the file once the projection session has finished. If some of the transparencies need to be projected again during the same session they must be taken out of this heap of transparencies already projected and the disorder that installs makes it more and more complicated to find back a specific transparency.
The usual storage and protection pockets like U.S. Pat. No. 5,486,883A allow storage in a binder whereas others like U.S. Pat. No. 5,622,420 add to that the feature of masking the left and right of the projected image, but they all need to be taken out of the binder for projection. A number of people have investigated the problem of how to present the transparencies with a good border and at the same time well filed and this has resulted in the development of different special binders that can be placed on the glass of the overhead projector such that the transparencies can be projected in a well defined position on the glass still staying attached to the binder or moving between two binders. For instance the U.S. Pat. No. 4,203,659, U.S. Pat. No. 3,709,590, U.S. Pat. No. 3,544,211 and U.S. Pat. No. 3,537,792 use a single binder placed on the glass of the overhead projector whereas the U.S. Pat. No. 5,676,443 and U.S. Pat. No. 5,321,451 use a double binder placed on the projector glass transferring the transparencies from one binder to the other. Another solution published in U.S. Pat. No. 4,707,092 consists of attaching the transparencies one to another in the form of an “accordion”, at the start placed on the table at one side of the projector, and to transfer the transparencies from one side of the projector to the other in passing them on the glass of the projector.
One of the drawbacks of these more sophisticated systems is the need for additional supports, suckers or considerable counter weights to stabilize the heavy binder on the glass of the overhead projector or to guide the transparencies. The mayor drawback however seems to me the fact that all these binders are special and different from the classical binder types one finds in all the bookshops and which are practical for the filing of any documents be it papers or transparencies.
SUMMARY OF THE INVENTION
The main object of this invention is to be able to keep the transparencies attached to their file during the projection, in order to keep always the filing order and therefore the facility to find a particular transparency back, but this in such a way as to avoid the problems linked to the existing techniques mentioned above.
Another object is to reach this objective without the need for a special filing system like a special type of binder such that one can apply it to any type of book or binder.
In particular in the case of standard ring binders, the object is that transparencies can be filed like any other document and if desired between any other document, implying also an entire freedom to move the transparencies from one binder to another or to change their order in the actual binder.
Another object is to keep the book or binder independent from the type of overhead projector used and to be able to project the transparencies while the binder has simply been placed on the table next to the overhead projector, including a certain flexibility for what concerns the position of the overhead projector and in particular the height of the glass of the overhead projector as compared to the place of the binder.
In order to reach these objectives the inventive effort has neither been put in the conception of the book or binder, nor in the conception of the overhead projector but uniquely in the conception of the document holder (Folder) that fixes the transparency in the binder. This holder, usually made as a pocket of transparent plastic, has here been made of a succession of pockets or foils, of paper or plastic or a combination of the two materials, assembled in the form of a folder with at least 3 consecutive leaves. The first of these leaves has the perforations or other means necessary to file the support in a classical binder or book. The third, or even later, leaf consists of a transparent pocket that contains the transparency or it consists of the bare transparency itself. The leaf or leaves in between allow unfolding the transparency to a position outside the binder. Folded in the binder, the transparencies can be consulted and seen like any other usual document in a binder.
There are two ways of folding the holder. One is the folding as an “accordion”. In this case the folded holder places the transparency on top of the intermediate leaves and the transparency can be read on the background of the other pages and, in particular if the for-last leaf is non-transparent, the transparency will be easily readable thanks to that background.
The second possibility is to fold the holder as an “envelope” such that the transparency, the third leaf for instance, folds inside the two leaves before, in this example the second and first leaves, that will form together a protection for the transparency. In this second case the transparency is situated under the for-last leaf (i.e. the second leaf) but is still perfectly readable if this second leaf, which protects the transparency, is now transparent and not non-transparent as in the first case. (In the Description further on the “accordion” type of folding has been taken for the example).
In order to project the transparencies on the overhead projector, the binder, in general a standard binder, which contains the transparencies each inserted in its folder, is placed on a table next to the overhead projector and is opened selecting the desired transparency. This transparency is then brought outside the binder by unfolding the folder and is placed on the glass of the overhead projector without a need of detaching the folder from the binder nor a need of taking the transparency out of the folder. This thanks to the intermediate leaves of the folder that allow a certain freedom to place the transparency, in its pocket, on the projector glass, which can be considerably higher than the surface of the table, and to align the transparency with the orientation of the glass. Equipping the leaf (pocket) that contains the transparency with a re-usable sticker allows sticking the leaf temporarily on the glass stabilizing in this way the position of the transparency. After its projection the folder containing the transparency is folded back into the binder and any other transparency can be selected and projected.
The unfolding and folding can be done over the longer side or over the shorter side of the sheet format used. The first direction of folding is most natural for the projection of transparencies that have a “portrait” orientation whereas the second is more indicated for transparencies with “landscape” orientation.
While the transparency is exposed on the projector glass the insides of the first and second leaves become visible. This can be used to show the text that accompanies the projected transparency, or any other useful information, by making these leaves in the form of transparent envelopes in which these texts can be filed. If the first leaf is transparent and not used for filing
Adams Russell
Gene Scott-Patent Law & Venture Group
Sever Andrew
LandOfFree
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