초록 ▼

A binder for papers, photographs, or other sheet-like materials is provided with a cover having one or more window openings defined therein. A flat, transparent protective sheet is located in contact with the inside surface of the binder cover and a backing sheet overlies the protective sheet. The b

A binder for papers, photographs, or other sheet-like materials is provided with a cover having one or more window openings defined therein. A flat, transparent protective sheet is located in contact with the inside surface of the binder cover and a backing sheet overlies the protective sheet. The backing sheet is secured to the peripheral margin of the protective sheet, and elsewhere as required, to delineate at least one, and preferably a plurality of pockets. The pockets are formed between the backing sheet and the protective sheet. An elongated slit in defined through the backing sheet behind each pocket created. The peripheral edges of the backing sheet are permanently secured to the inside surface of the binder cover. Photographs or other flat display materials may be inserted into the pockets formed between the backing sheet and the protective sheet through the elongated slits. The pockets are delineated so that they are aligned with the window opening in the cover. The photographs or other display materials may thereby be viewed through the window openings from the outside through the transparent protective sheet. Selected display materials may be inserted and withdrawn from the pockets through the elongated slits in the backing cover.

대표청구항 ▼

1. In combination, a binder cover formed of a stiff plastic material having an inside hidden surface and an outside exposed surface and at least one window opening with an enclosed perimeter defined therewithin, a flat, transparent plastic, protective sheet residing in direct contact with said insid

1. In combination, a binder cover formed of a stiff plastic material having an inside hidden surface and an outside exposed surface and at least one window opening with an enclosed perimeter defined therewithin, a flat, transparent plastic, protective sheet residing in direct contact with said inside surface of said cover and having a peripheral margin that extends about said perimeter of said window opening, and a flat, plastic backing sheet having a peripheral margin about its perimeter and wherein at least one access slit is defined in said backing sheet at said window opening, and said backing sheet resides in direct contact with and is fused to said protective sheet by interior lines of heat sealing that at least partially surround said enclosed perimeter of said window opening and said peripheral margin of said backing sheet and said peripheral margin of said protective sheet are fused directly to each other and to said inside surface of said cover at peripheral lines of heat sealing so that said protective sheet is located between said cover and said backing sheet, whereby said access slit permits insertion and withdrawal of flat display objects between said protective sheet and said backing sheet.2. A combination of according to claim 1 wherein a plurality of window openings as aforesaid, each with an enclosed perimeter, are defined within said binder cover, and said transparent protective sheet extends beyond all of said perimeters of all of said window openings.3. A combination according to claim 1 wherein said backing sheet is provided with a finger opening therethrough behind said at least one window opening.4. A combination according to claim 1 wherein said protective sheet is formed of a stiff, plastic material.5. A combination according to claim 1 wherein said backing sheet is formed of a stiff, plastic material.6. A combination according to claim 1 wherein said protective sheet is heat sealed about its periphery to said backing sheet.7. A combination according to claim 1 wherein said backing sheet is secured about its entire peripheral margin to said protective sheet by said lines of heat sealing.8. A combination of according to claim 2 further comprising an access slit defined in said backing sheet as aforesaid at each of said plurality of window openings.9. A combination according to claim 8 further characterized in that said backing sheet is fused by interior lines of heat sealing to said protective sheet between each of said window openings.10. A combination according to claim 9 further characterized in that said inside surface of said cover has peripheral edges and said backing sheet is secured by said peripheral lines of heat sealing to said inside surface of said cover adjacent said peripheral edges thereof.11. A binder having a cover formed of a stiff plastic material with at least one display window, wherein said cover is formed with inside and outside surfaces and with at least one window opening defined within its perimeter, further comprising a flat, transparent, plastic protective sheet and disposed in direct contact with said inside surface of said cover, wherein said protective sheet has a peripheral margin that extends beyond said at least one window opening, and a flat plastic backing sheet disposed in direct contact with said protective sheet and having a peripheral margin that extends beyond and surrounds said at least one window opening, and said backing sheet resides in direct contact with and is fused to said protective sheet by interior lines of heat sealing that at least partially surround said window opening and said peripheral margin of said backing sheet and said peripheral margin of said protective sheet are fused directly to each other and to said inside surface of said cover with said protective sheet located between said cover and said backing sheet, and at least one access slit is defined through said backing sheet to permit insertion and removal of flat objects in between said protective sheet and said backing sheet for viewing through said at least one display window.12. A binder according to claim 11 wherein a plurality of window openings as aforesaid are defined in said cover and are separated from each other by frames formed from said cover and delineated therebetween.13. A binder according to claim 11 wherein said cover, said protective sheet and said backing sheet are all formed of stiff plastic.14. A binder according to claim 12 wherein said backing sheet is secured to said protective sheet adjacent said frames of said cover that are delineated between said plurality of window openings.15. A binder according to claim 14 further characterized in that said peripheral margin of said backing sheet is secured throughout to said protective sheet.16. A binder having a cover with at least one window opening defined therethrough wherein said window opening has an inner peripheral boundary and said cover is formed of a stiff plastic material with inside and outside surfaces and further comprising: a flexible, transparent, plastic protective sheet disposed in direct contact with said inside surface of said cover and having a peripheral margin extending beyond and surrounding said peripheral boundary of said window opening through said cover, and a plastic backing sheet disposed in contact with said protective sheet and having a peripheral margin that extends beyond and surrounds said peripheral boundary of said window opening, and said backing sheet resides in direct contact with and is fused to said protective sheet by interior lines of heat sealing that at least partially surround said enclosed perimeter of said window opening and wherein an elongated slit is defined through said backing sheet at each of said window openings to permit insertion and removal of flat display sheets in between said backing sheet and said protective sheet, and said peripheral margin of said backing sheet and said peripheral margin of said protective sheet are fused directly to each other and to said inside surface of said cover with said protective sheet located between and residing in direct contact with both said backing sheet and said inside surface of said cover.17. A binder according to claim 16 further comprising a plurality of window openings as aforesaid defined through said cover thereby delineating separating interior window frame members on said cover between said window openings, and said backing sheet is secured to said protective sheet adjacent said interior window frame members, thereby defining a pocket between said backing sheet and said protective sheet at each of said plurality of window openings in said cover, and a corresponding plurality of elongated slits as aforesaid are defined through said backing sheet, one of said elongated slits being formed at each of said pockets.18. A binder according to claim in 17 wherein said peripheral lines of heat sealing seal said peripheral margin of said backing sheet throughout to said peripheral margin of said binder cover.