US 4,392,638 AGranted

Vehicle suspension device

AssigneeTokico Ltd.

InventorsTetsuo Kato, Naoki Makita

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Abstract

A vehicle suspension device includes a hydraulic damper including a vertical cylinder and a piston rod slidably extending out of the cylinder through the upper end thereof, and an air spring unit including a flexible tubular wall portion member having an inner wall mounted on the cylinder, an outer wall portion mounted on a tubular support member secured to the extending end of the piston rod and a rolling wall portion. A cylindrical housing is rotatably and sealingly mounted on the upper end of the cylinder and extends along the outer circumference of the cylinder, and the free end of the inner wall portion of the flexible tubular wall is secured to the upper end of the housing.

Claims7

Dependent claims

A vehicle suspension device comprising:

a hydraulic damper including a cylinder and a piston rod extending outwardly of one end of said cylinder;
a cylindrical housing mounted on said one end of said cylinder and surrounding a part of the outer circumference of said cylinder;
a cylindrical support member having a closed end attached to the extending end of said piston rod;
a flexible tubular wall member having a first end connected to said support member and a second end connected to said housing, said wall member, said housing and said support member defining an air chamber;
and
means for enabling said housing to rotate relative to said cylinder about a longitudinal axis of said damper, and thereby for preventing twisting of said wall member, said means comprising a bearing supporting said housing on said cylinder.

3 more elements

Dependencies are inferred from the claim text.