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. 09, 1999
Filed:
Jul. 30, 1997
Applicant:
Inventors:
Lyle Eugene Stephens, Hampton, IL (US);
Ignatz Wendling, Bettendorf, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01B / ;
U.S. Cl.
CPC ...
111139 ; 111157 ; 111143 ; 1726245 ; 172604 ;
Abstract
A pair of angled disks supported by a four bar linkage from the upper end of the opener drawbar assembly clears trash from a narrow area in front of the opener. The four bar linkage has a virtual center located on or close to the center of the opener disk for good cleaning wheel tracking and for permitting the clearing disks to be spaced closely to the opener disk without interference between the disks. The clearing disks can rock vertically to follow ground contour and prevent excessive digging and soil movement. Shallow teeth on the disks also reduce soil penetration and soil disturbance.