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US 4,626,005 AGranted
Fluid-tight flexible connection between hollow sections
OwnerGustav Stifterinventor
Life of this patent
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OwnerGustav Stifterinventor
Estimating the term…
A fluid-tight flexible connection comprises couplings (27, 28) of soft elastic material, inserted in cavities (11) of hollow sections (12, 13), flexible parts (29) of soft elastic material arranged between the couplings, nipples (32) of hard material inserted in passages (33) of the couplings (27, 28) and in transverse passages (34) of the flexible parts (29), the nipples having barbs (40, 41) exerting an expanding action, and having an internal bore (39). The nipples (32) provide a fluid-tight connection between the several parts, namely the hollow sections (12, 13), the coupling parts (27, 28) and the flexible parts (29), which connection has a comparatively high tensile strength in the direction of the cavities (11) by virtue of the barbs. The adjoining hollow sections (12, 13) can hinge relative to each other owing to the elasticity of the flexible part (29), the maximum hinge angle being determined by the elasticity of the flexible part (29) and its length.
A fluid-tight flexible connection connecting matching cavities of adjoining hollow sections, said connection comprising at least two couplings each tightly inserted into a cavity of a different one of said hollow sections with at least one passage extending into the cavity in the respective hollow section, a flexible part extending between the couplings to permit a hinge action between said adjoining hollow sections upon bending of said flexible part, said flexible part having at least one transverse passage aligned with the respective passages of the couplings, each coupling being of a soft elastic material, with its external cross section being tightly fitted in the internal cross section of the cavity, the flexible part itself being of a soft elastic material, and tubular nipples of hard material and forced into the aligned matching passages of an associated coupling and the transverse passage of the flexible part.
Dependencies are inferred from the claim text.