Anti-Roll Office Chair Mat

Abstract

A chair mat for use with a rolling wheeled chair. The chair mat having a top surface and a floor surface. The chair surface having a series of features configured to restrain rolling movement of the chair when a person is seated in the chair. In particular, the mat serves to restrain unintentional rolling movement of the chair by providing a feature that sufficient force must be applied to overcome. The features utilize a series of depressions with a ridge provided between adjacent depressions. The depressions are configured with a shape to retain a wheel of a wheeled chair, such as those common in an office environment, in the depression. The depressions are defined by one or more ridges separating each ridge from neighboring depressions. The depressions can be arranged in parallel valleys with a ridge separating neighboring valleys. Alternatively the depressions can be arranged in series of bowls, with a ridge forming a lip of each bowl. The bowls are preferably arranged in rows, with alternating rows being preferable.

What is claimed is: 
     
         1 . A chair mat comprising:
 a mat, said mat having a top surface and a floor surface, wherein said floor surface is configured for placement on a floor;   a plurality of anti-rolling features, wherein each of said anti-rolling features comprises a ridge and a depression, wherein said depression is configured for placement therein of a rolling wheel of a wheeled chair; and   wherein each of said ridges is configured to restrain unintentional rolling removal of the rolling wheel of a wheeled chair from said each of said depressions when a person is seated in the chair.   
     
     
         2 . The chair mat of  claim 1 , wherein said chair mat comprising a length and a width, wherein said ridges extend in a parallel orientation along said width of said mat, wherein said plurality of depressions each extends between two ridges and is arranged in a series of valleys and ridges. 
     
     
         3 . The chair mat of  claim 2 , wherein said series of valleys and ridges extends an entire width of said mat. 
     
     
         4 . The chair mat of  claim 1 , wherein said plurality of anti-rolling features comprises a plurality of bowls, wherein each bowl of said plurality of bowls is defined by said depression comprising a bottom of said bowl, and wherein said ridge defines a lip of said bowl. 
     
     
         5 . The chair mat of  claim 4 , wherein said plurality of bowls are arranged in a series of alternating rows on said mat. 
     
     
         6 . The chair mat of  claim 5  wherein each of said series of alternating rows on said mat extend from a first edge of said mat to a second edge of said mat. 
     
     
         7 . The chair mat of  claim 1  wherein said floor surface comprises a series of projections configured for providing friction between said floor surface of said mat and the floor. 
     
     
         8 . The chair mat of  claim 7  wherein said projections are configured for providing friction with a carpet floor surface. 
     
     
         9 . The chair mat of  claim 7  wherein said projections are configured for providing friction with a hard floor surface. 
     
     
         10 . The chair mat of  claim 2  wherein each of said valleys comprises a floor having a contour configured to match a circumference of a wheel of said wheeled rolling chair. 
     
     
         11 . The chair mat of  claim 4  wherein each of said bowls comprises a bowl floor having a contour configured to match a circumference of a wheel of said wheeled rolling chair.