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:
Dec. 21, 1993
Filed:
Nov. 19, 1992
Fritz Glaser, Zweibruecken, DE;
Roman Munz, Mannheim, DE;
Deere & Company, Moline, IL (US);
Abstract
A wheel suspension for a vehicle, in particular for utility and agricultural vehicles, has a hydro-pneumatic spring system arranged between a vehicle body and a wheel support that includes at least one hydraulic cylinder, a hydraulic accumulator arrangement and an intervening valve arrangement. The hydro-pneumatic spring system contains at least two hydraulic accumulators. The hydraulic accumulators can be connected individually or in groups of more than one with the one or more hydraulic cylinders selectively by means of the valve arrangement. Preferably at least two of the hydraulic accumulators are provided with differing pre-loads. In addition load-sensitive damping, a blocking valve and a level control valve that can be controlled by a level control linkage with switches are provided.