Spring element consisting of an elastic material, especially...

F - Mech Eng,Light,Heat,Weapons – 16 – F

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F16F 1/373 (2006.01) F16F 1/377 (2006.01) F16F 1/42 (2006.01)

Patent

CA 2432140

A spring element consisting of an elastic material, especially plastic (e.g., polyurethane),for absorbing kinetic energy, is made up of a tube section (1) and a base plate (2) which is solidly connected thereto. The wall thickness of the tube section (2) corresponds to an outer diameter (Da) to inner diameter (Di) ratio of <2 and the construction height (He) of said tube section (2) is 0.7 to 1.3 times the outer diameter (Do). An inversion of the surface on which the force is exerted occurs at the open end of the tube section (1) for a spring engagement in the order of 35 % of the original construction height.

Elément de ressort en un matériau élastique, en particulier en matière plastique (par exemple, polyuréthanne), destiné à absorber l'énergie cinétique, formé à partir d'une pièce tubulaire (1) et d'une plaque de base (2) solidaire de celle-ci. La pièce tubulaire (2) présente une épaisseur de paroi correspondant à un rapport diamètre extérieur (Da)/diamètre intérieur (Di) < 2 et une hauteur (He) de l'ordre de 0,7 à 1,3 fois le diamètre extérieur (Da). Une inversion de la surface sollicitée par la force se produit à l'extrémité ouverte de la pièce tubulaire (1) pour un engagement du ressort de l'ordre de 35 % de la hauteur initiale.

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