E.i. Dupont De Nemours and Company

Michelin Recherche Et Technique S.a.

Dupont Polymers, Inc.

Peter Laszlo Szekely

Damien Van Der Zyppe

Sébastien Rigo

Loïc Albert

Adam J Van Der Lelij

Bryan Martin Morris

Guy Cagneaux

Sebastien Thomasson

Fabien Mondini

Xavier Brouwers

Bryan Morris

The invention provides a vehicle suspension system, comprising a jounce bumper made of elastomeric thermoplastic material, having improved design to maximize energy absorption.

Thermoplastic jounce bumpers

Provided herein is a jounce bumper () for mounting in a vehicle suspension system () comprising a shock absorber (), the jounce bumper () having a central bore () extending in an axial direction (A). The jounce bumper () comprises an elastically compressible bumper portion () comprising a plurality of convolutes stacked in an axial direction (A) of the jounce bumper (), each convolute comprising a crest () and a root (). A cross-section of the compressible portion () perpendicular to the axial direction (A) is non-circular, the non-circular shape being configured to provide a variable compression resistance in relation to an axial compression displacement (Cd) of the jounce bumper ().

Jounce bumper

The invention provides vehicle suspension systems, and more particularly jounce bumpers made of elastomeric thermoplastic material, having improved design to maximize energy absorption.

Disclosed herein is a process for heat treating a foamed copolyester thermoplastic sheet structure in order to achieve a sheet structure having a compression set resistance (as determined according to ISO 1856, 22 hours, 70&#xb0; C., 30% compression) of less than 11%. Heat treating involves annealing followed by at least two cycles of pre-compression at approximately the annealing temperature.

Process for enhancing compression set resistance of foamed copolyester compositions

A load-bearing structure for a bearing support intended to be mounted on a rim inside a tire fitted on a vehicle to support the tread of the tire in the event of a loss of inflation pressure is provided. The load-bearing structure includes a base, a crown, and an annular body connecting the base and the crown. The body includes a plurality of partitions distributed regularly circumferentially, extending axially substantially from one side to the other of the body and radially from the base to the crown with a mean orientation relative to the radial direction of between 10 and 50 degrees, in that two circumferentially adjacent partitions exhibit contrary orientations relative to the radial direction and in that two adjacent partitions define with the base and/or the crown cavities in the form of triangles or trapezoids.

Optimized load-bearing structure for bearing support and optimized bearing support

The present invention relates to a scratch resistant polymer composition having a polymer that includes a copolyetherester elastomer, said polymer having a hardness of from 25D to 82D, and a fluorosurfactant having a nonionic organic head and a tail of the formula CF.sub.3 --(CF.sub.2).sub.x --CH.sub.2 CH.sub.2, where x is an integer from 3 to 15.

Growing community of inventors

Pringy, France

Peter Laszlo Szekely