Anti-Slip Pillowcase

Abstract

An anti-slip pillowcase that includes an outer case that comprises an aperture positioned along an edge of the outer case to permit insertion of a pillow into the outer case. The pillowcase further includes a closing mechanism to open and close the aperture and at least one anti-slip structure that is disposed on an interior surface of the outer case. The anti-slip structure is designed to minimize or prevent relative movement between the outer case and a pillow disposed within the outer case.

I claim: 
     
         1 . An anti-slip pillowcase comprising:
 an outer case having a rectangular shape;   said outer case comprising an aperture disposed along an edge of said outer case and configured to permit insertion of a pillow into said outer case;   a closing mechanism being openable and closable to open and close said aperture; and   at least one anti-slip structure being disposed on an interior surface of said outer case and configured to minimize or prevent relative movement between said outer case and a pillow disposed within said outer case.   
     
     
         2 . The anti-slip pillowcase according to  claim 1 , wherein:
 said outer case comprises a first rectangular portion and a second rectangular portion disposed opposite and facing said first rectangular portion and connected together at the edges thereof;   said at least one anti-slip structure comprises at least two anti-slip structures;   said at least two anti-slip structures comprise a first anti-slip structure and a second anti-slip structure; and   said first anti-slip structure is disposed on an interior surface of said first rectangular portion and said second anti-slip structure is disposed on an interior surface of said second rectangular portion.   
     
     
         3 . The anti-slip pillowcase according to  claim 2 , wherein each of said at least two anti-slip structures comprises an elongated strip. 
     
     
         4 . The anti-slip pillowcase according to  claim 3 , wherein each of said elongated strips being oriented transverse or essentially perpendicular to said aperture to facilitate sliding insertion of a pillow. 
     
     
         5 . The anti-slip pillowcase according to  claim 4 , wherein:
 said at least two anti-slip structures comprises a third anti-slip structure and a fourth anti-slip structure; and   said third anti-slip structure is disposed on the interior surface of said first rectangular portion and said fourth anti-slip structure is disposed on the interior surface of said second rectangular portion.   
     
     
         6 . The anti-slip pillowcase according to  claim 5 , wherein:
 said first anti-slip structure is spaced apart from and essentially parallel to said third anti-slip structure; and   said second anti-slip structure is spaced apart from and essentially parallel to said fourth anti-slip structure.   
     
     
         7 . The anti-slip pillowcase according to  claim 6 , wherein:
 said first anti-slip structure is disposed parallel and facing opposite said second anti-slip structure; and   said third anti-slip structure is disposed parallel and facing opposite said fourth anti-slip structure.   
     
     
         8 . The anti-slip pillowcase according to  claim 7 , wherein:
 said aperture is disposed on a longer edge of said outer case; and   said at least two anti-slip structures are disposed essentially perpendicular to said aperture and essentially parallel to the shorter sides of said outer case.   
     
     
         9 . The anti-slip pillowcase according to  claim 8 , wherein each of said anti-slip structures comprises an anti-slip material configured to provide sufficient friction to minimize or prevent relative movement between said outer case and a pillow disposed within said outer case. 
     
     
         10 . The anti-slip pillowcase according to  claim 9 , further wherein said closing mechanism comprises a zipper configured and disposed to open and close said aperture. 
     
     
         11 . The anti-slip pillowcase according to  claim 10 , further comprising two covering portions disposed along the edges of said aperture and configured to overlap and conceal said zipper upon said zipper being closed. 
     
     
         12 . The anti-slip pillowcase according to  claim 11 , wherein said outer case comprises a breathable and anti-bacterial material. 
     
     
         13 . The anti-slip pillowcase according to  claim 2 , wherein:
 said at least two anti-slip structures comprises a third anti-slip structure and a fourth anti-slip structure; and   said third anti-slip structure is disposed on the interior surface of said first rectangular portion and said fourth anti-slip structure is disposed on the interior surface of said second rectangular portion.   
     
     
         14 . The anti-slip pillowcase according to  claim 13 , wherein:
 said first anti-slip structure is spaced apart from said third anti-slip structure; and   said second anti-slip structure is spaced apart from said fourth anti-slip structure.   
     
     
         15 . The anti-slip pillowcase according to  claim 14 , wherein:
 said first anti-slip structure is disposed facing opposite said second anti-slip structure; and   said third anti-slip structure is disposed facing opposite said fourth anti-slip structure.   
     
     
         16 . The anti-slip pillowcase according to  claim 3 , wherein:
 said aperture is disposed on a longer edge of said outer case; and   said at least two anti-slip structures are disposed essentially perpendicular to said aperture and essentially parallel to the shorter sides of said outer case.   
     
     
         17 . The anti-slip pillowcase according to  claim 2 , wherein each of said at least two anti-slip structures comprises an anti-slip material configured to provide sufficient friction to minimize or prevent relative movement between said outer case and a pillow disposed within said outer case. 
     
     
         18 . The anti-slip pillowcase according to  claim 1 , further wherein said closing mechanism comprises a zipper configured and disposed to open and close said aperture. 
     
     
         19 . The anti-slip pillowcase according to  claim 1 , further comprising two covering portions disposed along the edges of said aperture and configured to overlap and conceal said closing mechanism upon said closing mechanism being closed. 
     
     
         20 . The anti-slip pillowcase according to  claim 1 , wherein said outer case comprises a breathable and anti-bacterial material.