Motor grader drawbar assembly with safety clutch mechanism

Details Motor grader drawbar assembly with safety clutch mechanism Motor grader drawbar assembly with safety clutch mechanism

1975-02-24

1977-01-25

Stouffer, Richard T.

Earth working

Scraper between front and rear ground supports of vehicle

37 42VL, 64 30R, 172103, 172261, 172793, 172796, E02F 376, A01B 6104

Patent

active

040046419

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.

REFERENCES:
patent: 2655015 (1953-10-01), Linder
patent: 2708836 (1955-05-01), Stuart
patent: 2733798 (1956-02-01), Almen et al.
patent: 2760285 (1956-08-01), Greeley
patent: 2943466 (1960-07-01), Elliott
patent: 3025686 (1962-03-01), Lewis
patent: 3406583 (1968-10-01), Baier
patent: 3712384 (1973-01-01), Fisher
patent: 3775998 (1973-12-01), Century et al.
patent: 3797621 (1974-03-01), James

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