Patent ID: 6502281
Filing Date: 2003-01-07
Classification: E05D,E05Y,Y10T

Abstract:
A plug for use in a counterbalancing mechanism of a cable-operated door, said plug being mounted about an overhead shaft and used for operatively connecting said overhead shaft to a torsion spring coaxially mounted thereon, said plug comprising:a cylindrical collar having opposite first and second portions, said collar being provided with a hooking slot for hooking a free end of the torsion spring therein and said torsion spring having a segment coaxially mounted about the first portion of the collar, the collar being eccentrically mounted about the overhead shaft; and a cylindrical flange rigidly affixed to the second portion of the collar, said flange being used for transferring a torque between the torsion spring and the overhead shaft when the flange is securely fixed about the overhead shaft; wherein the plug further comprises a shouldering floor of a given length faced against the hooking slot and extending inside the collar, from the second portion towards the first portion thereof, between said collar and the overhead shaft.