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. 23, 1981
Filed:
Dec. 13, 1979
Applicant:
Inventor:
Christopher Nilsen, Shelton, WA (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A01G / ;
U.S. Cl.
CPC ...
144 / ; 83694 ; 144 / ;
Abstract
Bolts detachably mount a thin tree-shearing blade on a peripheral reinforcing blade carrier swingably mounted on a tractor. The plunger of a hydraulic jack is connected directly to the blade, independently of the blade carrier, for swinging the blade to shear a tree. The force applied by the jack to the blade is applied in the plane of the blade. To prevent excess stress from being applied to the bolts connecting the blade and the blade carrier as a tree is sheared, the blade carrier includes projecting backing plates fitted against opposite edges of the blade for transmitting force applied to the blade directly to the blade carrier.