Patent ID: 7097666

Claim:
In combination: A. a pylon having a first end and a longitudinal axis; B. a pyramidal adapter; and C. an angularly adjustable coupling assembly comprising: i. a first end with: a. a collared clamp for being removeably connected to said first end of said pylon; b. a first end base comprising a concave surface; and c. a first end hole through said first end; ii. a second end with: a. a receiver for being removeably connected to said pyramidal adapter; b. a second end base comprising a convex surface adapted to be in mating engagement with said concave surface of said first end and being angularly adjustably connected to said first end base about a fixed axis of rotation; and c. a second end hole through said second end and a slot through said second end that is generally perpendicular to said second end hole; iii. a pin having a side hole and for being received within said second end hole; and iv. a fastener for being inserted through said first end hole and said slot, and into said pin side hole to hold said first end and said second end in a selected angular alignment with respect to each other.