Patent ID: 6644632
Filing Date: 2003-11-11
Classification: B60G,F16F

Abstract:
A method for adjusting the elevation of a vehicle chassis of a substantially stationary transport vehicle, said vehicle chassis mounted on an air spring including a bellows having a first interior portion and a rigid piston having a second interior portion pneumatically connected to said bellows, said first interior portion of said bellows being isolated from said second interior portion of said piston by a valve arranged therebetween, said method comprising supplying pressurized air to said air spring, pressurizing and depressurizing said first interior portion of said bellows in order to adjust said elevation of said vehicle chassis while said vehicle is substantially stationary, and closing said valv to pneumatically isolate said piston from said bellows, whereby the time for adjusting said elevation of said vehicle chassis is minimized by effecting said adjusting by pressurizing and depressurizing said bellows when said valve is in a closed position.