Patent ID: 8991538
Filing Date: 2015-03-31
Classification: B62D

Abstract:
1. A cab suspension and repositioning system for a truck having a cab and a chassis, the system comprising: a control arm structure comprising (i) a first control arm having a distal end configured to be pivotably attached to the chassis and a proximal end configured to be pivotably attached to the cab, (ii) a second control arm having a distal end configured to be pivotably attached the chassis and a proximal end configured to be pivotably attached to the cab, and (iii) a torsion member fixedly connecting the first control arm to the second control arm, wherein the control arm structure is configured to control cab sway during operation of the truck; a third control arm having a distal end configured to be pivotably attached to the chassis and a proximal end configured to be pivotably attached to the cab; a first hydraulic cylinder having a distal end configured to be pivotably attached to the chassis and a proximal end pivotably attached to the first control arm, and a second hydraulic cylinder having a distal end configured to be pivotably attached to the chassis and a proximal end pivotably attached to the second control arm; and a hydraulic pump operably connected to the first and second hydraulic cylinders, and operable to selectively extend the first and second hydraulic cylinders; wherein extending the first and second hydraulic cylinders moves the control arm structure from a first position wherein the cab is adjacent the chassis to a second position wherein the cab is disposed away from the chassis, without pivoting the cab; and further wherein the first, second, and third control arms are parallel and remain parallel when the first and second hydraulic cylinders move the control arm structure from the first position to the second position.