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US4895351: Tension-compression stay with fiber-reinforced synthetic resin material strut


Filing Information

Inventor(s) Jean-Michel Devaud ·
Assignee(s) Ciba-Geigy Corporation ·
Attorney/Agent(s) Harry Falber ·
Primary Examiner Andres Kashnikow ·
Assistant Examiner Matthew C. Graham ·
Application Number US7803681
Filing date 12/02/1985
Issue date 01/23/1990
Predicted expiration date 01/23/2007
U.S. Classifications 267/69  · 267/70  ·
International Classifications F16F 100  ·
Kind CodeA
International Classifications 26769;70;148;149 ·
Foreign Priority CH587384 - 12/11/1984 ·
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.

Independent Claims | See all claims (20)

  1. 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.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US4050827 Messerschmitt-Bolkow-Blohm G.m.b.H. Jonda Sep 1977
US4097163 Tyee Aircraft, Inc. Dubuque Jun 1978
US4421497 Felten & Guilleaume Energietechnik GmbH Federmann et al. Dec 1983

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
EP59163Feb 1982
DE3007896DAIMLER BENZ AGSep 1981