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:
Jul. 16, 2002
Filed:
Jan. 23, 2001
GKN Walterscheid GmbH, , DE;
Abstract
A device for setting the length of a top rink ( ) of an attaching device of a tractor ( ) has a piston/cylinder unit ( ) for length setting purposes. The piston/cylinder ( ) has a displacement sensor ( ) which records the respective actual length setting of the top link ( ). The displacement sensor ( ) generates an actual proportional length signal. A lift position sensor ( ) is provided which generates an electric signal representing the respective actual lift position of the lower steering arms ( ). A nominal length setting of the top link ( ), which refers to the respective actual lift position, can be stored in a storage unit ( ). When a new actual lift position is reached during the automatic mode of operation, it is possible to generate an electric control signal which corresponds to the nominal length setting of the top link ( ). The signal is transmitted to the comparator of a control unit ( ). The comparator compares the control signal with the actual length signal. The control unit controls the piston/cylinder ( ) as a function of the deviation of the signals from one another, towards a nominal length setting. In this way it is possible, automatically, to achieve optimum kinematics for an implement attached to a tractor, without any outside interference.