Joints and connections – Interfitted members – Clamped members
Patent
1997-08-28
1999-08-03
Kim, Harry C.
Joints and connections
Interfitted members
Clamped members
403235, 403297, F16B 214
Patent
active
059315997
ABSTRACT:
A connecting device, in particular, for connecting two rod elements, has an expansion wedge construction that can be clamped in a tube-shaped end of the first rod element by expansion and that can be connected with the second rod element via a connecting piece. The expansion wedge construction includes an expansion mandrel and an expansion casing that can be engaged on the expansion mandrel. Expansion mandrel and expansion casing have an oval axial cross-section in such a manner that the wedge surfaces, which are formed in the area of the strong curvature between expansion casing and expansion mandrel, essentially are no smaller than the corresponding force locking surfaces that are made on an outside wall in the area of a strong curvature. Wedge-shaped wall thickenings of the casing are made in mirror-symmetry fashion on the inside of the surface area are molded-on in the mutually dialectically opposite areas with strong curvature. Predisposed (intentional formed) rupture points are provided in mirror-symmetry fashion with respect to each other on the flat areas of the surface area that are unstressed in the radial direction.
REFERENCES:
patent: H906 (1991-04-01), Baggett et al.
patent: 3787131 (1974-01-01), Reachek
patent: 4365907 (1982-12-01), Berry
patent: 4555199 (1985-11-01), Maier et al.
patent: 4643609 (1987-02-01), Biass
patent: 5464299 (1995-11-01), Scharer et al.
Kim Harry C.
Usm U. Scharer Sohne AG
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