Patent ID: 9204715
Filing Date: 2015-12-08
Classification: A47B

Abstract:
1. An adjustable leg for supporting a support top of a table, said leg defining an extension axis, a first end of the leg, and a second end of the leg, opposite the first end, comprising: a plurality of leg members mutually slidably engaged along the extension axis; wherein at least one leg member of said plurality is defined by an outer surface extending about the extension axis and at least another leg member contiguous to the one leg member is defined by an inner surface configured to slidably receive said outer surface of the at least one leg member along the extension axis; wherein said inner surface of said at least another member contiguous faces and is complementary to said outer surface of said at least one member; wherein said inner surface and said outer surface is an extruded surface with an elliptical section, having a major axis and a minor axis; contrast members interposed between the outer surface of said at least one leg member and the complementary inner surface of said at least another contiguous leg member, by elastic contrast between said outer surface and said inner surface, said contrast members comprising a first pair of contrast members and a second pair of contrast members arranged in the vicinity of the ends of the leg members along the major axis of the ellipse, in a symmetrical manner with respect to the minor axis, leaving central portions of the transversal cross-section of the leg members unloaded; wherein the elasticity of said contrast members and the elasticity of said leg members are designed to form a forced frictional coupling between said at least one leg member and said at least another contiguous leg member in a direction parallel to the extension axis of the leg so that said static friction force opposes a force applied to the second leg end towards the first leg end along the extension axis and locks in rest the leg members to one another so to prevent relative movement between the first leg end and second leg end in the direction parallel to the extension axis of the leg.