US Patent No. 10,189,327

SPRING MODULE WITH NEGATIVE AND POSITIVE STIFFNESS SPRINGS


Patent No. 10,189,327
Issue Date January 29, 2019
Title Spring Module With Negative And Positive Stiffness Springs
Inventorship Avshalom Suissa, Kiryat Ono (IL)
Vladimir Suplin, Modiin (IL)
Assignee GM Global Technology Operations LLC, Detroit, MI (US)

Claim of US Patent No. 10,189,327

1. A strut assembly for a suspension corner employed in a vehicle having a vehicle body and a road wheel, the strut assembly comprising:a damper; and
an elastic unit having at least one spring module acting in concert with the damper to suspend the vehicle body relative to the road wheel, wherein the at least one spring module has a positive stiffness spring arranged in parallel with a negative stiffness spring;
wherein the positive stiffness spring is a Belleville spring segment and the negative stiffness spring is a buckling beam segment.