Patent ID: 6692052
Filing Date: 2004-02-17
Classification: B62D

Abstract:
A wheeled land vehicle comprising a chassis frame and a cab body mounted on the chassis frame by a mounting that comprises a frame-side bracket attached to a chassis frame member and a body-side bracket attached to a cab body member, a fastener that attaches one of the brackets to the corresponding member and that experiences shearing stress as one of the chassis frame and the cab body accelerates relative to the other with a component of motion along a fore-aft dimension of the vehicle, and a structure that includes an elastomer through which the two brackets are associated in an assembly relationship that allows limited motion between the brackets in multiple dimensions accompanied by deformation of the elastomer, one of the multiple dimensions being the fore-aft dimension of the vehicle, wherein the other bracket comprises a formation that, when the elastomer is not being deformed by acceleration forces, is spaced a predetermined distance apart along the fore-aft dimension of the vehicle from the member to which the one bracket is attached by the fastener and is disposed for abutment by the member to which the one bracket is attached by the fastener for arresting motion of the cab body relative to the chassis frame when a component of acceleration force along the fore-aft dimension of the vehicle displaces the cab body relative to the chassis frame sufficiently to reduce to zero the spacing between the formation and the member to which the one bracket is attached by the fastener, and the arrest occurs before shearing stress in the fastener exceeds the maximum allowable shearing stress for the fastener.