Patent ID: 7975813
Filing Date: 2011-07-12
Classification: B60N,F16F

Abstract:
1. A suspension system for a seat assembly of a machine, comprising: an upper support member; a lower support member; a pair of scissors linkages interconnecting the upper and lower support members, wherein each of the scissors linkages includes a first arm and a second arm pivotably attached at central portions thereof; a pair of electromagnetic devices positioned at first ends of the first arms, wherein each of the electromagnetic devices includes a movable magnet and first and second stationary magnets positioned along a guide rod, wherein the movable magnet is movable along the guide rod between the first and second stationary magnets, wherein each electromagnetic devices further includes a first spring positioned between the first stationary magnet and the movable magnet and a second spring positioned between the second stationary magnet and the movable magnet and; an electronic controller in communication with the electromagnetic devices, wherein the electronic controller is configured to energize the electromagnetic devices in response to a sensor output.