Title: Blade control apparatus of a motor grader including wand vibration damping element

Abstract: An improved control apparatus of a motor grader for maintaining the grader blade relative to a reference line has a biasing element connected to an actuating wand and associated with the reference line for urging the reference line toward the actuating wand of the controls at a preselected force for damping undesirable vibrations of the wand.

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Inventors: Tillman, William R. (Monticello, IL, US)

Application Number: 615653
Filing Date: 1975-09-22
Publication_date: 1977-03-01
Assignee: Caterpillar Tractor Co. (Peoria, IL)
Primary Class(es): 172/4.5 200/61.44
Other Classes:
US Patent Ref:

432809	Jul, 1890	Weaver	24/255.
1336375	Apr, 1920	Owen	223/90.
1360189	Nov, 1920	Cushing	24/129.
1799717	Apr, 1931	Wilson	24/255.
1906058	Apr, 1933	Gray	223/93.
1917086	Jul, 1933	Beauchamp	223/92.
3495663	Feb, 1970	Scholl et al.	172/4.
3561538	Feb, 1971	Curlett et al.	172/4.
3743026	Jul, 1973	Gill et al.	172/4.

Other Refs:
Primary Examiner: Stouffer, Richard T.
Assistant Examiner:
Attorney: Hart; Frank L.