Patent ID: 8602430
Filing Date: 2013-12-10
Classification: B60G

Abstract:
1. A trailing arm air suspension system supporting a vehicle frame, comprising on either sides of the vehicle a trailing arm ( 09 , 10 ) pivoted at its first end ( 41 , 42 ) at top of hanger brackets ( 05 , 06 ), which trailing arms extend in longitudinal direction to axle ( 150 ) which axle is connected on its both sides to mid-portion ( 43 , 44 ) of trailing arms ( 09 , 10 ) by spherical joints with centers ( 49 , 50 ), which hanger brackets ( 05 , 06 ) are attached to a pair of oppositely spaced frame rails ( 03 , 04 ) connected by at least one cross member ( 51 ), which hanger brackets ( 05 , 06 ) extend vertically below axle axis plane ( 52 ), to which hanger bracket is pivotally connected link rods ( 13 , 14 ) at first end of the link rods to bottom end of hanger brackets more towards lower side of axle axis plane ( 52 ), link rods extending in the longitudinal direction to axle, second end of link rods pivotally connected to axle below axle axis plane, air springs ( 23 , 24 ) and shock absorbers ( 25 , 26 ) functionally disposed between a second end ( 45 , 46 ) of trailing arms and frame rails ( 03 , 04 ) wherein the axle ( wherein the trailing arm is a rolled and formed spring steel with a formed pivot hole (