Abstract: A combined subframe and fuel tank for use in automobiles, includes a subframe having a seat disposed therein for tightly receiving an extension extending from a fuel tank, whereby the combined subframe and fuel tank form a composite product so as to occupy a small space in the automobile body.

Abstract: An anti-roll system using a caster control for use in vehicles and more particularly, a steering system having an anti-roll system which includes a plurality of links for easily converting the caster and adding an anti-roll function generated by turning the front wheels so as to realize a secure posture and improve the turning function of the vehicles.

Abstract: An insulator device for a strut type suspension system of an automobile includes a rubber member disposed between a bearing case and an insulator housing and having an asymmetrical configuration so as to become a larger outside portion thereof than an inside portion thereof and a smaller spring constant of the inside portion thereof than an outside portion thereof so that the moving centrode of the car wheels relative to the car body can be controlled by the displacements of the bearing case since a camber is increased in the negative direction upon encountering a bumping of the car, thereby increasing the tread.