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. 03, 1982
Filed:
Sep. 12, 1980
Applicant:
Inventors:
Larry F Stikeleather, Hales Corners, WI (US);
Tony L Kaminski, Greendale, WI (US);
Assignee:
Allis-Chalmers Corporation, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01D / ;
U.S. Cl.
CPC ...
56257 ; 56306 ; 56299 ;
Abstract
Resonant frequency operation of a reciprocating sickle (28) of a mowing device is achieved by connecting a torsion bar (97) to its actuating lever (82). The torsion bar (97) spring rate is such that when installed in a sickle and drive system, the resonant frequency of the sickle and its drive falls within the range of frequencies at which the sickle is reciprocated during crop cutting operations.