Gm Global Technolgoy Operations, Inc.

Softwheel Ltd.

Dvir Brand

Ahishay Sardes

Ronny Winshtein

Avshalom Suissa

Amichay Haim Gross

Alon Capua

A negative stiffness apparatus includes a fluid filled bellows interposed between a first surface and a second surface wherein the bellows and the first and second surfaces have an orientation of substantial equilibrium between the first and second surfaces. The bellows and the first and second surfaces include other orientations wherein the first and second surfaces are displaced from the orientation of substantial equilibrium and the bellows exerts a displacement force to urge the first and second surfaces further away from the orientation of substantial equilibrium.

Negative stiffness apparatus

A wheel with a suspension system being connectable to a vehicle, like a wheel chair, comprises a hub () and a rim () rotatable about the axle () of the hub (). Between the hub () and the rim (), a number of support members () is located. The support members () are adapted to retain the distance when stressed up to a threshold value and recoverly alter the distanced when stressed over this threshold value. According to the invention, the support members () are comprising spring elements (), damping strokes by compression if the support member () is compressed or elongated. The spring elements () are preferably preloaded.

Wheel with suspension system and centralizing unit with suspension system

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Hod-Hasharon, Israel

Dvir Brand