Patent ID: 6637732
Filing Date: 2003-10-28
Classification: F16F

Abstract:
A pneumatic suspension system comprising the following structural components:a pneumatic suspension bellows made of an elastomeric material and enclosing an air chamber with a variable volume, wherein said pneumatic suspension bellows is provided with an embedded reinforcement; a pressure reservoir having a first fastening area with an outside diameter (D1); on which a first end of said pneumatic suspension bellows is secured via a first clamping ring, and wherein said outside diameter (D1) includes said first clamping ring; and a pneumatic suspension piston having a second fastening area with an outside diameter (D2), on which a second end of said pneumatic suspension bellows is secured by means of a second clamping ring, wherein said outside diameter (D2) includes said second clamping ring and a roll-off piston with an outside diameter (D3), on whose outer wall said pneumatic suspension bellows is capable of rolling off while forming a first rolling fold; wherein said pressure reservoir is disposed outside of said first fastening area with a contoured roll-off surface comprising a beginning and an end for a second rolling fold and increasing its outside diameter, said second rolling fold constantly resting against said roll-off surface and being capable of rolling off only to a limited extent as compared to said first rolling fold; wherein said outside diameter of said first fastening area is less than said outside diameter of said roll-off piston; wherein said outside diameter of said second fastening area is less than an increased outside diameter (D4) of said pressure reservoir at said end of said roll-off surface; and wherein said outside diameter of said roll-off piston is less than the increased diameter (D4) of said pressure reservoir and said end of said roll-off.