[특허]Disposable fold-up sifting animal litter filtering pan

Pioneer Pet Products, LLC

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Disposable fold-up sifting animal litter filtering pan

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A01K-001/035
미국특허분류(USC)	119/166; 119/168
출원번호	US-0563083 (2009-09-18)
등록번호	US-8235006 (2012-08-07)
발명자 / 주소	Lipscomb, John M. Suring, Stanley L.
출원인 / 주소	Pioneer Pet Products, LLC
대리인 / 주소	Boyle Fredrickson, S.C.
인용정보	피인용 횟수 : 6 인용 특허 : 31

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A disposable litter pan that is made of a flexible material, preferably biodegradable non-plastic material, such as thermally pressed cardboard or other paper fiber material treated with an aqueous coating that inhibits degradation of the pan in the presence of fluids. The pan is a generally self-supporting pan structure having two end walls, two sidewalls, and a floor; wherein the floor having several perforations, openings, or orifices sized to allow unused cat litter to be sifted into a retaining pan underneath that can be of the same or imperforate construction. The litter pan folds, allowing the sidewalls to engage in a manner that does not allow litter or excrement to escape. The pan can be retained in the folded condition by an integral latching arrangement that also can serve as a handle.

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1. A disposable litter pan arrangement comprising a litter pan formed of a litter-holding bottom wall with a fold region formed therein and a perforate litter sifting region disposed along the fold region; and a peel away film attached to an underside of the bottom wall covering the perforate litter sifting region preventing litter in the pan from passing through the litter sifting region and allowing unused litter to pass through the perforate litter sifting region when removed. 2. The disposable litter pan arrangement of claim 1 wherein the bottom wall has a pair of sides and a pair of ends, wherein the fold region is disposed intermediate the bottom wall ends dividing the pan into a plurality of folding pan sections, wherein the bottom wall is imperforate between the perforate litter sifting region and each bottom wall end, and wherein the perforate litter sifting region comprises a plurality of pairs of perforations covered by the peel away film attached to the underside of the bottom wall. 3. The disposable litter pan arrangement of claim 1 wherein the fold region comprises at least one fold line generally bisecting the bottom wall dividing the pan into a pair of folding pan halves that fold about the fold line. 4. The disposable litter pan arrangement of claim 3 wherein the fold region comprises a plurality of spaced apart generally parallel fold lines having a plurality of the perforations of the perforate litter sifting region disposed between the fold lines. 5. The disposable litter pan arrangement of claim 1 comprising a pre-packaged pan stack having a plurality of litter pans each formed of a litter-holding bottom wall with a fold region formed therein and a perforate litter sifting region comprised of a plurality of pairs of perforations disposed along the fold region, a peel away film attached to an underside of the bottom wall covering the perforations of the perforate litter sifting region allowing litter to pass through the perforations in sifting unused litter from fecal matter in the pan when removed, a charge of unused litter disposed in each one of the plurality of pans, and wherein one of the plurality of pans is nested in the other one of the plurality of pans. 6. A disposable litter pan arrangement comprising: a pre-packaged pan stack having a plurality of litter pans each formed of a litter-holding bottom wall with a fold region formed therein and a perforate litter sifting region comprised of a plurality of pairs of perforations disposed along the fold region, a peel away film attached to an underside of the bottom wall covering the perforations of the perforate litter sifting region preventing litter in the pan from passing through the litter sifting region and allowing litter to pass through the perforations in sifting unused litter from fecal matter in the pan when removed, a charge of unused litter disposed in each one of the plurality of pans;wherein one of the plurality of pans is nested in the other one of the plurality of pans; andwherein the amount of the charge of the unused litter in an upper one of the plurality of nested pans is greater than the amount of the charge of unused litter in a lower one of the plurality of nested pans underlying the upper one of the plurality of nested pans. 7. The disposable litter pan arrangement of claim 6 wherein a bottommost one of the pans of the pre-packaged pan stack has an imperforate bottom wall. 8. The disposable litter pan arrangement of claim 6 wherein each charge of unused litter comprises a clumping litter that includes one of a clay and cellulose. 9. The disposable litter pan arrangement of claim 6 wherein the fold region comprises at least one fold line generally bisecting the bottom wall dividing the pan into a pair of folding pan halves that fold about the fold line. 10. The disposable litter pan arrangement of claim 6 wherein the plurality of nested pans has a combined stack height so a cat sees the charge of unused litter in an uppermost one of the plurality of nested pans. 11. The disposable litter pan arrangement of claim 10 wherein the combined stack height of the pre-packaged pan stack has a height of about ten to twelve inches. 12. A disposable litter pan arrangement comprising a pre-packaged pan stack having a plurality of pans with each one of the plurality of pans including a litter-holding bottom wall having a litter sifting region comprised of a plurality of perforations and a fold region formed therein, a peel away film adhesively attached to an underside of the bottom wall covering the perforations preventing litter in the pan from passing through the perforations and allowing unused litter to pass through the perforations in sifting unused litter from clumped litter and fecal matter in the pan when manually removed, and a charge of unused litter disposed therein, and wherein one of the plurality of pans is nested in the other one of the plurality of pans. 13. The disposable litter pan arrangement of claim 12 wherein the amount of the charge of the unused litter in an upper one of the plurality of nested pans is greater than the amount of the charge of unused litter in a lower one of the plurality of nested pans underlying the upper one of the plurality of nested pans. 14. The disposable litter pan arrangement of claim 13 wherein each charge of unused litter comprises a clumping litter that includes one of a clay and cellulose. 15. The disposable litter pan arrangement of claim 12 wherein, for each one of a plurality of the pans, (a) the bottom wall has a pair of sides and a pair of ends, (b) the fold region is disposed intermediate the bottom wall ends dividing the pan into a plurality of folding pan sections, and (c) the bottom wall is imperforate between the litter sifting region and each bottom wall end. 16. The disposable litter pan arrangement of claim 12 wherein, for each one of a plurality of the pans, (a) the fold region comprises at least one fold line generally bisecting the bottom wall into a pair of folding pan halves that fold about the at least one fold line, and (b) the perforations of the litter sifting region extend along the at least one fold line. 17. The disposable litter pan arrangement of claim 12 wherein the fold region is defined by a pair of spaced apart and elongate fold lines formed in the bottom wall that generally bisect the bottom wall into a pair of halves that fold about the fold region toward one another and wherein the litter sifting region extends along the fold region. 18. A disposable litter pan arrangement comprising a pre-packaged pan stack having a plurality of pans with each one of the plurality of pans comprising (a) a litter-holding bottom wall having a fold region formed therein and a litter sifting region comprised of a plurality of pairs of perforations covered by a peel away film adhesively attached to an underside of the bottom wall covering the perforations of the litter sifting region and (b) a charge of unused litter disposed therein, wherein one of the plurality of pans is nested in the other one of the plurality of pans, wherein the amount of the charge of the unused litter in one of the plurality of nested pans is greater than the amount of the charge of unused litter in another one of the plurality of nested pans underlying the upper one of the plurality of nested pans, and wherein the peel away film allows unused litter to pass through perforations of the litter sifting region when peeled away. 19. The disposable litter pan arrangement of claim 18 wherein the amount of the charge of the unused litter in an upper one of the plurality of pans is greater than the amount of the charge of unused litter in a lower one of the plurality of pans underlying the upper one of the plurality of nested pans. 20. The disposable litter pan arrangement of claim 18 wherein, for each one of a plurality of the pans, (a) the bottom wall has a pair of sides and a pair of ends, (b) the fold region is disposed intermediate the bottom wall ends dividing the pan into a plurality of folding pan sections, and (c) the bottom wall is imperforate between the litter sifting region and each bottom wall end. 21. The disposable litter pan arrangement of claim 20 wherein, for each one of a plurality of the pans, (a) the fold region comprises at least one fold line generally bisecting the bottom wall into a pair of folding pan halves that fold about the fold line, (b) the perforations of the litter sifting region extend along the at least one fold line from adjacent one side of the bottom wall to adjacent the other side of the bottom wall, and (c) the bottom wall is imperforate from each bottom wall end to adjacent the fold region.

이 특허에 인용된 특허 (31)

이 특허를 인용한 특허 피인용횟수: 6

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Disposable fold-up sifting animal litter filtering pan

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Disposable fold-up sifting animal litter filtering pan

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