IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0094670
(2002-03-11)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- 3M Innovative Properties Company
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
23 인용 특허 :
12 |
초록
▼
A package for dispensing sheet material from a stack includes a novel biasing device for urging the stack of sheet material toward an opening in one side of the package. The biasing device is comprised of a flat sheet of material sized and shaped to be located within the package beneath the stack of
A package for dispensing sheet material from a stack includes a novel biasing device for urging the stack of sheet material toward an opening in one side of the package. The biasing device is comprised of a flat sheet of material sized and shaped to be located within the package beneath the stack of sheet material. An elastomeric element having an unstressed length that is less than a diameter of the flat sheet of material is stressed and positioned between opposite edges of the flat sheet of material. As stress is relieved from the elastomeric element, the elastomeric element draws the opposite edges together and elevates a central portion of the sheet of material in the form of an arch to urge the stack toward the opening as the stack of sheet material is depleted.
대표청구항
▼
1. A dispenser package for sheet material comprising: a container having a bottom, side walls and a top, the top defining an opening extending between opposing side walls; a stack of sheet material positioned within the container, the stack comprised of a plurality of vertically aligned sheets
1. A dispenser package for sheet material comprising: a container having a bottom, side walls and a top, the top defining an opening extending between opposing side walls; a stack of sheet material positioned within the container, the stack comprised of a plurality of vertically aligned sheets of material which are releasably adhered to each other along opposite edges of successive sheets by a narrow band of pressure-sensitive adhesive, a first sheet of material capable of passing through the opening in the top of the container; a sheet of generally flat flexible material disposed between the bottom of the container and the stack of sheet material, having a top surface in contact with the stack of sheet material, a bottom surface, a first pair of opposing edges and a second pair of opposing edges; and an elastomeric element engaged with the sheet of flexible material so as to bias the flexible material into a curved state, the elastomeric element having an unstressed length that is less than a length of one edge of the first pair of opposing edges of the sheet of flexible material. 2. The dispenser package of claim 1 wherein the elastomeric element comprises first and second portions of an elastomeric material, the first and second portions having an unstressed length less than a length of one edge of the first pair of edges.3. The dispenser package of claim 1 wherein the sheet of flexible material further comprises: a pair of creases, the pair of creases spaced from and generally parallel to the first pair of opposing edges; and wherein the elastomeric element engages the sheet of flexible material to bend the sheet of flexible material along the pair of creases, urging the top of the flexible sheet towards the top of the container. 4. The dispenser package of claim 1 wherein the elastomeric element comprises first and second portions of an elastomeric material, the first and second portions having an unstressed length less than a length of one edge of the first pair of edges.5. The dispenser package of claim 1, wherein the elastomeric element is in form of an elastic band.6. The dispenser package of claim 5, wherein the elastic band has an unstressed circumference that is less than the circumference of the sheet of flexible material.7. In a dispenser package for sheet material comprising a container having a base, a cover and side walls which define an interior space, the interior space containing a stack of sheet material, the stack comprised of a plurality of vertically aligned sheets of material which are releasably adhered to each other along opposite edges of successive sheets by a narrow band of pressure-sensitive adhesive, an opening in the cover to permit removal of individual sheets from the stack, and means for biasing the stack of sheet material toward the cover, the improvement comprising: a flexible plate sized to fit in the interior space of the container between the stack of sheet material and the base of the container, the flexible plate having a top surface, a bottom surface, first and second opposing edges, third and fourth opposing edges, and a circumference; an elastomeric band having an unstressed circumference that is smaller than the circumference of the flexible plate, the elastomeric band being positioned over the top surface of the flexible plate such that first and second portions of the elastomeric band are near the first and second opposing edges of the flexible plate, and third and fourth portions of the elastomeric band are positioned below the bottom surface of the flexible plate near the third and fourth opposing edges, the third and fourth portions of the elastomeric band having an unstressed length less than a length of the third and fourth edges of the flexible plate. 8. A dispenser package for sheet material comprising: a container having a bottom, side walls and a top, the top defining an opening extending between opposing side walls; a stack of sheet material positioned within the container, the stack comprised of a plurality of vertically aligned sheets of material which are releasably adhered to each other along opposite edges of successive sheets by a narrow band of pressure-sensitive adhesive, a first sheet of material capable of passing through the opening in the top of the container; a flexible plate sized to fit within the dispensing package between the stack of sheet material and the bottom of the dispensing package, the plate having a top surface, a bottom surface, opposing first and second edges, opposing third and fourth edges, and a circumference; and an elastomeric band having first and second portions, the first and second portions positioned between the first and second edges of the plate and secured to opposite sections of the plate, each portion having an unstressed length that is less than a length of one of the third and fourth edges of the plate, the elastomeric member thereby drawing the first and second edges of the sheet toward one another. 9. The device of claim 8 wherein the plate comprises a first pair of spaced recesses associated with the third edge and a second pair of spaced recesses associated with the fourth edge, and wherein the band of elastomeric material is positioned in the first and second pair of recesses.10. The device of claim 8 wherein the plate is a polymer material.11. The device of claim 8 wherein the first and second edges of the plate generally are parallel to one another, and wherein the third and fourth edges are formed to define a radially tapered width of the plate.12. The device of claim 8 wherein the plate is formed to define one or more openings through the sheet, the openings generally being spaced from the first, second, third and fourth edges.13. The device of claim 8 wherein the plate is a card stock material.14. The device of claim 8 wherein the plate includes at least one crease, the at least one crease generally being parallel to and spaced from the first and second edges.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.