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US4895351: Tension-compression stay with fiber-reinforced synthetic resin material strut
20 Claims, No Drawings
Metallic force-introducing elements are fastened to the two ends of a fiber-reinforced synthetic resin material tube. These elements consist each of an inner and an outer part which are screw-connected with one another. The inner part comprises a bushing-shaped thread-bearing shaft having an external threading and being screwed into the respective tube end. The outer part comprises a supporting sleeve which surrounds the tube end and absorbs radial forces generated by the thread-bearing shaft. This type of connection of a synthetic resin tube with force-introducing elements is not critical with respect to temperature changes and is particularly simple to assemble in the manufacture of a novel tension-compression stay.
- 1. A tension-compression stay comprising a synthetic resin tubular strut, having two opposing ends and inner and outer walls, reinforced by fibers of high rigidity, and, at each of the two opposite ends of said strut, a force-introducing element of metal fastened to the respective end and comprising a metallic thread-bearing shaft having an external threading, said force-introducing elements being screwed directly into the ends of said synthetic resin tube by means of the threading of said shaft cutting into the inner wall of the tube ends.
U.S. Patent Documents
Foreign Patent Documents
|Document Number||Assignees||Inventors||Issue/Pub Date|
|DE3007896||DAIMLER BENZ AG||Sep 1981|
|FR2496836||MASCHF AUGSBURG NUERNBERG AG||Jun 1982|