Filing Information

Inventor(s)	Jean-Michel Devaud ·
Assignee(s)	Ciba-Geigy Corporation ·  View assignee updates
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 Code	A
International Classifications	26769;70;148;149 ·
Foreign Priority	CH587384 - 12/11/1984 ·

Patent Family

Abstract

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.