Patent ID: 6454483
Filing Date: 2002-09-24
Classification: F16B,Y10T

Abstract:
A pipe linkage between a larger diameter pipe and a smaller diameter pipe, comprising:the larger diameter pipe having a first tubular interior and a first terminal end region; the smaller diameter pipe having a second tubular interior and a second terminal end region, the second terminal end region extends inside the first tubular interior of the larger diameter pipe; the second terminal end region terminates in a second terminal edge; a linking holder connected to the larger and smaller diameter pipes for establishing the position of the smaller diameter pipe along the larger diameter pipe; a bush having a main body with an outer peripheral surface wherein the bush is installed into the second interior of the smaller diameter pipe; the bush having a smaller diameter than the second interior of the smaller diameter pipe the bush having a collar with a diameter larger than the diameter of the outer peripheral surface of the main body and larger than a diameter of the second tubular interior of the smaller diameter pipe, defining a step between the outer peripheral surface of the main body and the collar for engaging the second terminal edge of the smaller diameter pipe to position the bush at the second terminal end region of the smaller diameter pipe so that the outer peripheral surface of the main body extends into the second interior of the smaller diameter pipe, the bush being comprised of compressible elastic material; and cooperating compression elements disposed at the bush, the compression elements being operable for compressing the bush for causing the outer peripheral surface of the main body of the bush to be swollen into contact with the second interior of the smaller diameter pipe, and the collar of the bush is so sized that upon swinging of the smaller diameter pipe inside the larger diameter tube, the collar on the bush may contact the interior of the larger diameter pipe, instead of the second terminal end region of the smaller diameter pipe making such contact.