The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 1993
Filed:
Oct. 25, 1990
Walter Runkel, Wuppertal, DE;
Abstract
A hydropneumatic suspension system for motor vehicles. The system contains at least one piston cylinder unit (202) including a cylinder (212) and a piston (214) cooperating with a spring storage system (204, 206) containing a compressible medium, where a hydraulic pressure (p.sub.3, p.sub.4) of the piston cylinder unit (202) acts against a pneumatic pressure (p.sub.1, p.sub.2) of the spring storage system. The pneumatic pressures are smaller than the respective hydraulic pressures. In a preferred embodiment, the piston (214) of the piston cylinder unit divides two pressure spaces (228, 230) whose volumes are varied in opposite directions, where the two pressure spaces are hydraulically separated from each other and are each connected to a separate spring storage system (204, 206).