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:
Apr. 12, 1977
Filed:
Apr. 24, 1975
Applicant:
Inventors:
Gene B Easterling, Decatur, IL (US);
Joseph L Strabala, Orinda, CA (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
E02F / ;
U.S. Cl.
CPC ...
172796 ; 91461 ; 172793 ;
Abstract
A motor grader including a wheeled main frame and a drawbar structure attached thereto is disclosed wherein a circle-mounted working implement, such as a blade or the like, is supported on the drawbar by improved guide shoes. The improved guide shoes include surfaces in engagement with both upper and lower surfaces of the circle at all times and remotely controlled mechanical apparatus for varying the frictional forces exerted by such guide shoes on the circle, whereby undesirable effects due to wearing of the engaging surfaces in operation are reduced.