Floor mat

Abstract

The floor mat contains a main piece with a number of first interlocking elements configured along a circumference of the main piece at intervals. Each first interlocking element contains a protrusion and a gap. The main piece also has a number of corner elements, each configured at a corner of the circumference. A hollow frame member is for the embedment of the main piece and has a number second interlocking elements matching the first interlocking elements along an inner circumference of the frame member. Each corner of the frame member has two perpendicular cuts end-to-end connected together and a slant cut running through a joint of the perpendicular cuts. As such, the floor mat can be pieced together in all directions, regardless of which side is up. The frame members can have their corners adjusted and fit on the main pieces to conceal their exposed interlocking elements.

I claim: 
     
         1 . An integrally formed floor mat comprising:
 a main piece;   a plurality of interlocking elements configured along a circumference of the main piece at intervals, each comprising a protrusion and a gap; and   a plurality of corner elements, each configured at a corner of the circumference;   wherein each gap connects a neighboring interlocking element's protrusion or connecting a neighboring corner element.   
     
     
         2 . The floor mat according to  claim 1 , wherein each protrusion is extended laterally from the circumference for a first distance. 
     
     
         3 . The floor mat according to  claim 2 , wherein each corner element is extended from the circumference of the main piece for a second distance; and the second distance is one half of the first distance. 
     
     
         4 . The floor mat according to  claim 1 , wherein the interlocking elements along two opposing edges of the main piece are staggered so that one interlocking element's protrusion and gap on one edge are aligned with another interlocking element's gap and protrusion on an opposing edge, respectively. 
     
     
         5 . An integrally formed floor mat comprising:
 a main piece;   a plurality of first interlocking elements configured along a circumference of the main piece at intervals, each comprising a protrusion and a gap;   a plurality of corner elements, each configured at a corner of the circumference; and   a hollow frame member for the embedment of the main piece having a plurality second interlocking elements matching the first interlocking elements along an inner circumference of the frame member;   wherein each gap connects a neighboring first interlocking element's protrusion or connecting a neighboring corner element; and each corner of the frame member has two perpendicular cuts end-to-end connected together and a slant cut running through a joint of the perpendicular cuts.   
     
     
         6 . The floor mat according to  claim 5 , wherein the perpendicular cuts at a corner of the frame member form an included right angle. 
     
     
         7 . The floor mat according to  claim 6 , wherein, at a corner of the frame member, the slant cut forms an included acute angle against each of the perpendicular cuts. 
     
     
         8 . The floor mat according to  claim 5 , wherein each protrusion is extended laterally from the circumference for a first distance. 
     
     
         9 . The floor mat according to  claim 8 , wherein each corner element is extended from the circumference of the main piece for a second distance; and the second distance is one half of the first distance. 
     
     
         10 . The floor mat according to  claim 5 , wherein the first interlocking elements along two opposing edges of the main piece are staggered so that one first interlocking element's protrusion and gap on one edge are aligned with another first interlocking element's gap and protrusion on an opposing edge, respectively.