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:
May. 30, 1989
Filed:
May. 06, 1987
Applicant:
Inventors:
Leslie J Slunecka, Sioux Falls, SD (US);
Calvin H Hansen, Sioux Falls, SD (US);
Leroy B Stumpe, Hartford, SD (US);
Assignee:
Du-al Manufacturing Company, Sioux Falls, SD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F / ;
U.S. Cl.
CPC ...
37 86 ; 37 8 / ;
Abstract
A tractor with a trencher and a blade or shovel on the front of the tractor, the trencher connected to the tractor by a three-point hitch, the trencher having a boom pivotal up and down and a pair of laterally spaced swivel wheels beneath the trencher supported on arms pivoted to the frame and extending rearwardly with the pivotal arms connected to the frame at a location forward of the center of gravity of the trencher.