| 摘要 |
A vehicle suspension unit of the shock-absorber-type with combined self-pumping, load-leveling capability. Includes a piston within a cylinder but separated by an air spring in a chamber therebetween, the piston in turn being supported by a second spring, the cylinder and second spring being confined between an axle and the vehicle chassis. In the event of a severe load, liquid from an accumulator is transmitted to the chamber between the cylinder and piston, restoring the cylinder and chassis to the normal level. Liquid is thus transmitted through the bore of a hollow rod which is connected to the cylinder, there being porting between the accumulator and rod allowing this only under severe load conditions; and preferably the rod has a piston, operating in a pump chamber of unusual form, for keeping the accumulator chamber charged with liquid.
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