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:
Mar. 20, 2001
Filed:
Oct. 05, 1999
GKN Walterscheid GmbH, Lohmar, DE;
Abstract
A device for stabilizing the two lower steering arms (,) of a tractor, with the lower steering arms (,) actuated by a hydraulically operated power lever (,). The arms are each associated with a side strut (,) with a first single-acting hydraulic cylinder (,) for stabilizing and fixing purposes. A line connection between the first single-acting hydraulic cylinders (,) and the power lever (,) can be effected by a control valve (,). In order to center the lower steering arms (,) and set the arm to a pre-determined dimension of spread, even when no implement is attached, the line (,) which leads to the second single-acting hydraulic cylinder (,) of the power lever (,) contains a pressure-controlled first return valve. A bypass line (,) with a second return valve (,) is provided to lock in the direction opposite to that of the first return valve.