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:
Feb. 12, 2002
Filed:
Oct. 12, 1999
Michel Wolff, Waltenheim-sur-Zorn, FR;
Kuhn S.A., Saverne, FR;
Abstract
An agricultural machine including a chassis, a working unit connected to the chassis by a suspension device so that the working unit can move relative to the chassis during work, at least one operating ram for raising the working unit into a transport position or lowering it into a work position relative to the chassis, and at least one lightening ram for transferring part of the weight of the working unit onto the chassis. The operating ram and the lightening ram each include a corresponding chamber formed in a same mobile cylinder, each chamber being connected to a source of fluid and the cylinder being associated with a corresponding locking mechanism for preventing the cylinder from rotating about its longitudinal axis.