Patent ID: 8356785
Filing Date: 2013-01-22
Classification: F16M,Y10T

Abstract:
1. An adjustable extension arm comprising: a first channel member having a first end, a second end opposite the first end, a pair of sidewalls extending from the first end to the second end, and a reinforcement structure extending between the pair of sidewalls, the reinforcement structure tapering in height between the first end and the second end of the first channel member; a second channel member having a first end, a second end opposite the first end, and a pair of sidewalls extending from the first end to the second end; a first endcap having first and second ends, the first end being coupled to the first ends of the first and second channel members; and a second endcap having first and second ends, the first end being coupled to the second ends of the first and second channel members, wherein the reinforcement structure comprises at least two distinct, non-continuous steps between the first end and the second end of the first channel member, the at least two distinct, non-continuous steps having different heights.