Patent ID: 6254300
Filing Date: 2001-07-03
Classification: F16G,Y10T

Abstract:
A coupling assembly for connecting chain half-links, each half-link having aligned cylindrical passages of equal diameter, comprising:(a) a cylindrical hinge pin with two ends, said hinge pin having a barrel and having an annular notch in a center portion of said hinge pin;(b) a retention sleeve, said retention sleeve having(i) a major bore,(ii) a major outer surface, and(iii) an annular valley in a center portion of said retention sleevewherein said major outer surface is reduced at said annular valley and wherein an inner diameter of said annular valley is greater than a diameter of said annular notch;(c) said hinge pin adapted to be positioned through the aligned passages of the chain half-links, connecting the half-links together;(d) said retention sleeve major outer surface having a diameter larger than the diameters of the chain half-link passages; and(e) said retention sleeve disposed about said hinge pin with said annular valley positioned in said annular notch, to restrict lateral movement of said hinge pin.