Automatic control system controlling a ripper used on a construc

Details Automatic control system controlling a ripper used on a construc Automatic control system controlling a ripper used on a construc

1975-01-29

1977-06-28

Stouffer, Richard T.

Earth working

Automatic power control

Draft responsive

172 12, 172430, 172484, 172699, A01B 63112

Patent

active

040319644

ABSTRACT:
An automatic control system for a ripper used on a construction equipment in which a load detector is provided on the ripper for detecting load acting on the ripper shank and lift cylinders are actuated to automatically raise the shank when overload is applied to the shank during ripping operation. The ripper is also provided with a depth detector for detecting upper and lower limit positions of the shank and the vertical movement of the shank can be limited between the upper and lower limits. When no overload is applied, the shank is maintained at the lower limit position to rip the ground at a predetermined penetration depth.

REFERENCES:
patent: 2745328 (1956-05-01), Brimhall
patent: 3503456 (1970-03-01), Larson
patent: 3658133 (1972-04-01), Sweet et al.
patent: 3674095 (1972-07-01), Roger
patent: 3825072 (1974-07-01), Collins
patent: 3939758 (1976-02-01), Faisandier

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