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:
Jan. 03, 1995
Filed:
Sep. 03, 1993
Applicant:
Inventor:
Walter N Knigge, Manitowoc, WI (US);
Assignee:
Miller-St. Nazianz, Inc., St. Nazianz, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01D / ;
U.S. Cl.
CPC ...
56370 ; 56DI / ; 56367 ;
Abstract
A rotary rake is provided with a hydraulic lifting mechanism for raising and lowering the rake. A vertical shaft extending through the center of a rotary gearbox on the rake serves as a hydraulic fluid port. Pressurized hydraulic fluid from a remote source passes through the shaft to a hydraulic cylinder mounted on a support frame. The hydraulic cylinder operates a mechanical linkage which raises and lowers the rake. The mechanical linkage includes an over-center position for securely holding the rake in the raised position.