Patent ID: 6449824
Filing Date: 2002-09-17
Classification: B25B,F16L,Y10T

Abstract:
At a gasoline service station that has an underground storage tank and a pipe connected to said storage tank such that it extends up to the ground level, said pipe has an aluminum tube inside of it that is a very close fit which allows fuel to be poured down through it into said tank and at the same time the air in said tank is allowed to vent out of said tank through the space between said pipe line and said tube, whereby said tube gets stuck in said pipe and must be removed, a tube pulling device for insertion into said tube to grip it sufficiently to remove it from its stuck position and which consists of:a) body that has one end that has a thicker dimension than its opposite end giving it a tapered wedge shape, b) a wedge that has one end that has a thicker dimension than its opposite end giving it a tapered wedge shape, c) a line that extends from above ground level down into said tube and which carries said body down into said tube so that said body is installed into said tube with its thickest end going into said tube first and its thinnest dimension in last so that it presents its flat tapered surface looking up and then said wedge is installed on top if it with it's thinnest end going into said tube first and it's thickest end last so that its flat tapered surface is facing downwardly thereby allowing the said flat tapered surface of said body and the said flat tapered surface of said wedge to contact each other and work against each other forcing each other outwardly against said tube wall thereby gripping it so that when a human operator pulls on said line the pulling forces generated by said operator are transferred to said tube to cause it to be released.