Patent ID: 6021742
Filing Date: 2000-02-08
Classification: A01K

Abstract:
An adjustable width livestock working alley for handling various size animals comprising:a stationary support frame;a first arcuate-shaped stationary outer wall supported by said frame structure;a second arcuate-shaped moveable inner wall including multiple sections, pivotable joints at the ends of said sections connecting each section to the adjacent section so the effective radius of the overall inner wall can be changed;a series of connecting links, each link pivotally connected at one end to the stationary frame and at the opposite end to one of said pivotable joints, each connecting link starting with a first link having a first length, with the lengths of each additional link being proportional to the accumulated changes in circumferential length of the wall sections contained in the support frame as the effective radius of the inner wall is changed;power means connected to said multiple sections for movement of said sections radially and longitudinally to change the effective radius of said inner wall.