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:
Jun. 19, 1990
Filed:
Aug. 23, 1989
Applicant:
Inventor:
Stanley J Johnson, Cedar Falls, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241 37 ; 2411017 ; 241241 ;
Abstract
An automatic forage harvester shearbar-cutterhead clearance adjusting system includes motors connected to conventional left and right shearbar adjusting mechanisms. A knock sensor senses contact between the shearbar and the rotating knives of the cutterhead. A control unit including a programmed microprocessor controls the motors and, responding to signals from the knock sensors, automatically adjusts the shearbar-cutterhead clearance. The control unit prevents machine damage by responding to various fault conditions.