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. 25, 1977
Filed:
Feb. 24, 1975
Applicant:
Inventor:
Vergil P Hendrickson, Morton, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02F / ; A01B / ;
U.S. Cl.
CPC ...
172781 ; 37 4 / ; 64 3 / ; 172103 ; 172261 ; 172793 ; 172796 ;
Abstract
The motor grader drawbar assembly has a blade mounted on a circle gear and a drive gear selectively rotates the circle gear and the blade via a pinion gear engaged with the circle gear and mounted on a rotatable shaft. A slip clutch is interposed between the drive gear and the shaft to allow relative movement therebetween when a preselected torque is exceeded, as when the blade hits an obstruction. A pressure plate overlies the slip clutch and may be adjusted to change the preselected torque required.