Patent ID: 6840194

Claim:
A round pen comprising a plurality of vertical round tubular steel posts provided with a plurality of horizontal top rails of tubular steel, the steel posts including a first end post, a second end post and a plurality of intermediate posts, each intermediate post having a series of “eyes” welded thereon through which cables may pass to connect the posts, the posts being spaced equal distance from one another in a circular or oval arrangement and having lower ends secured in the ground, a top horizontal tubular steel rail extending from the first end post to the next adjacent intermediate post and a top horizontal tubular steel rail extending between each pair of intermediate posts around the circumference of the pen until a top rail extends from the last intermediate post into the second end post, the top rails having ends abutting each other within each of the intermediate posts, the top rails being provided with retaining pins inserted within vertical holes located adjacent the ends of the rails within the intermediate posts to prevent the rails from slipping out of the intermediate rails, a plurality of cables extending through the eyes of all the intermediate posts and being connected at one end to the first end post and at another end to the second end post, and means for tensioning the cables to place the rails in compression and add rigidity to the round pen.