Patent ID: 8524350

Claim:
A mat for selectively covering a threshold of an opening and part of a floor near said threshold, said opening partly defined by a substantially vertical first side jamb and a substantially opposing second side jamb, each of said first and second side jambs having a substantially planar face, wherein said mat comprises: a substantially planar, substantially rectangular mat body with upper and lower surfaces, said mat body having a first edge sized and shaped to at least partially engage said first side jamb and a second edge sized and shaped to at least partially engage said second side jamb; at least one substantially rigid lateral protrusion extending outwardly from said first edge, wherein said at least one substantially rigid lateral protrusion extending outwardly from said first edge at least partially engages said first side jamb when said mat is positioned adjacent said threshold; and at least one substantially rigid lateral protrusion extending outwardly from said second edge, wherein said at least one substantially rigid lateral protrusion extending outwardly from said second edge at least partially engages said second side jamb when said mat is positioned adjacent said threshold.