Patent ID: 7472516

Claim:
An adjustable threshold assembly comprising; a base extending along an axis presenting an upper surface with a channel extending into said upper surface and longitudinally along said axis, a rail disposed longitudinally along said base above said channel and defining a hole, and a threaded fastener retained in said hole and extending downwardly into said channel, wherein said channel has a neck at said upper surface and a pair of opposing sides angling outwardly from said neck into said base and a nut having a bore engaging said threaded fastener and presenting opposing contact surfaces complementary to said pair of opposing sides for slideably engaging said pair of opposing sides, wherein said opposing contact surfaces of said nut are further defined as being planar and parallel to said opposing sides of said channel, wherein said nut includes a central pillar and a plurality of flanges extending radially from said central pillar to present said contact surfaces, said bore extending into said central pillar, wherein said opposing sides of said channel include a first side and a second side opposing said first side and said flanges on said nut include a first flange and a second flange presenting said contact surfaces parallel to said first side and a third flange and a fourth flange presenting said contact surfaces parallel to said second side, wherein said first flange extends at a side angle relative to said second flange and said third flange extends at said side angle relative to said fourth flange, wherein said first flange extends at an end angle relative to said fourth flange and said second flange extends at said end angle relative to said third flange, and wherein said side angle is greater than said end angle with said side angle and said end angle being supplementary.