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. 18, 2001
Filed:
Sep. 30, 1999
Günter Eis, Harsewinkel, DE;
Heinrich Isfort, Dülmen, DE;
Claas Selbstfahrende Erntemaschinen GmbH, Harsewinkel, DE;
Abstract
A control unit for an agricultural harvesting machine is arranged so that the width of a passage or opening between two machine elements can be precisely adjusted as simply as possible. Adjustable stops are in the form of plungers are displaceably guided in cylinders. Each cylinder is connected to a multi-chamber pump which contains a displaceable stepped piston. Individual chambers of the multi-chamber pump and the steps of the piston are mutually matched so that the same quantity of hydraulic fluid is squeezed out from the two chambers of the multi-chamber pump and the plungers move in and out in synchronism. The control unit is particularly suitable for use in foragers, combines other agricultural harvesting machines.