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. 23, 1976
Filed:
Oct. 02, 1973
Applicant:
Inventors:
Reynold Barkstrom, Hinsdale, IL (US);
Calvin P Rickerd, La Grange Park, IL (US);
William C Swanson, Clarendon Hills, IL (US);
Assignee:
International Harvester Company, Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01D / ;
U.S. Cl.
CPC ...
56 108 ; 56 112 ; 56 143 ;
Abstract
A variable speed feed roll drive mechanism as provided for a forage harvester, the mechanism including a reversible hydrostatic transmission having its input shaft coupled with the chopper input shaft, the output of the transmission being coupled with the feed rolls. The hydrostatic transmission, having an infinitely variable range of output speeds provides the capability to infinitely vary the length of cut of crops passing through the chopper.