Stefano Lepre

US Patent:

20060201227, Sep 14, 2006

Filed:

Oct 3, 2005

Appl. No.:

11/242797

Inventors:

Stefano Lepre - Canton MI, US
Mamad Jahani - Bremen, DE
Colin Newport - Ayr, CA
Wayne Bland - Kitchener, CA
Livio Versolatto - Dorchester, CA

International Classification:

B21D 26/02
B21C 37/30

US Classification:

072370140

Abstract:

The invention provides rear suspension structures and engine cradles involving tubular components. The tubular components have variable wall thickness along the length for reducing materials required. The tubular components also have mechanical properties varying along the length of the tubular components, to meet the requirements on strength and dynamic and static loads. The weight of the tubular components can be further reduced by appropriately varying the wall thickness and mechanical properties along the length of the tubular components.

US Patent:

20180229566, Aug 16, 2018

Filed:

Mar 19, 2018

Appl. No.:

15/925156

Inventors:

- Hamilton, CA
Stefano Lepre - Canton MI, US

International Classification:

B60G 9/00
B60G 21/05
B21C 1/24
B21D 53/88
B21K 1/12

Abstract:

The invention relates to a twist-axle that includes a cross-beam member and two trailing arms, each trailing arm rigidly secured to the cross-beam member in one of two connection regions of the cross-beam member or formed integrally with and extending from one of the two connection regions. The cross-beam member is formed from a tubular blank and has a torsionally elastic central portion and two torsionally stiff connection regions. The cross-beam member has a wall thickness that varies longitudinally along the length of the cross-beam member from the torsionally elastic central portion to each of the torsionally stiff connection regions.