Dryer exhaust conduit and flow passage elbow with universal interconnection therebetween

A venting system for diverting exhaust gas from a clothes dryer to an outlet to atmosphere comprising an open ended rearwardly extending conduit connected at one end from a clothes dryer and having at an opposite end a first coupling along a flow path of exiting gas from said clothes dryer, an open ended elbow having a second coupling at one end connected to said conduit first coupling to divert existing exhaust gas therefrom, said first coupling disposed in a telescoped operative interconnection within said second coupling, and a fluid-tight seal at said interconnection consisting of a length portion of said first coupling bounding an exit opening in an inner operative position in said telescoped interconnection, a semicircular wall bounding a circular recess adjacent an end of said length portion of said second coupling bounding an inlet opening in an outer operative position in said telescoped interconnection, and a rubber sleeve having a wedge shape in cross section in increasing thickness in the direction of exhaust gas exiting flow and an end selectively sized radially extending semispherically shaped collar, said sleeve having an operative position interposed between said first and second couplings, said interposed operative position being said radially extending collar of a size selected to seat within said circular recess so as to constrain said sleeve against opposite directional longitudinal movement and to hold said first coupling length portion in an established contact against said second coupling length portion whereby during a telescoping of said first and second couplings said established contact occurs at a thickness of said sleeve which contributes to providing a fluid-tight seal and in opposite untelescoping movement said sleeve remains in place.