Claims
- 1. A protector adapted to accommodate a transparency so that it may be used with an overhead optical projector to cast an image carried by the transparency onto a viewing screen, the protector comprising an open-ended rectangular sleeve formed of transparent synthetic plastic film material of high strength whose dimensions are appropriate to those of the transparency, said sleeve having a front panel folded at a first fold line over a rear panel of the same length to form a folder to receive the transparency whose inner edge is then adjacent the first fold line, said rear panel having a greater width than the width of the front panel and having a second fold line which defines a flap extending beyond the front panel, said flap being folded over the rear panel, said flap having a section adjacent the second fold line that is bonded to the rear panel to define a margin in which holes are punched so that the protector can be stored in a ring binder or other file, and a parallel section defining a locking pocket which receives the outer edge of the transparency and the corresponding edge of the front panel whereby the transparency is locked in the sleeve.
- 2. A protector as set forth in claim 1, in which the sleeve is formed of polypropylene film.
- 3. A protector as set forth in claim 2, in which the film has a thickness in the range of about 2 to 3 mils.
- 4. A protector as set forth in claim 1, in which the sleeve is formed of polyester.
- 5. A protector as set forth in claim 1, for a transparency that is inserted therein in a moist state, the protector acting to dry out the transparency and to maintain it in a dust-free and dry condition, said protector further including a sheet of transparent hygroscopic material that is interposed in the sleeve between the front panel and the moist transparency and acts to absorb mosture therefrom.
- 6. A protector as set forth in claim 5, in which the sleeve is formed of acetate film.
- 7. A protector as set forth in claim 1, wherein the image on the transparency is a test pattern to facilitate focusing and centering the optical projector.
- 8. A protector as set forth in claim 1, in which the sleeve is formed from a single blank of film material that is scored to define the first and second fold lines.
RELATED APPLICATION
This applications is a continuation-in-part of my copending application Ser. No. 08/025,619, filed Mar. 3, 1993, entitled "Transparency Protector", the entire disclosure of which is incorporated herein by reference.
US Referenced Citations (4)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
25619 |
Mar 1993 |
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