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:
Aug. 13, 2002
Filed:
Mar. 21, 2001
Applicant:
Inventor:
Konrad Weber, Siersburg, DE;
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P 7/04 ;
U.S. Cl.
CPC ...
F01P 7/04 ;
Abstract
A ventilation device of an agricultural vehicle such as a combine, forage harvester or tractor having an engine ( ) and a cooling device ( ) for cooling the engine ( ) and/or additional parts to be cooled that are in a heat conducting relationship. The ventilation device comprises a fan ( ) a fan drive ( ) and a control system ( ) connected to the fan drive ( ) to regulate the feeding rate of the fan ( ). The control system ( ) is arranged to control the fan drive ( ) in the most energy-efficient way while making allowance for the amount of ambient air required by the cooling device ( ) and the drive power requirements of the fan ( ) using a flat logic (fuzzy control).