Computer controlled backhoe

Details Computer controlled backhoe Computer controlled backhoe

1979-06-14

1981-09-08

Paperner, Leslie J.

Material or article handling

Vertically swinging load support

Shovel or fork type

37103, 37DIG20, 212189, 280 61, 280764, 172 45, E02F 926, E02F 387

Patent

active

042881960

ABSTRACT:
A backhoe includes a computer capable of automatically controlling the depth or lowermost point of the backhoe bucket. The computer is programmable to provide level operation of the backhoe, will have preset common depths and programmable depths, and further include an automatic empty and return cycle, and to maintain a given level or slope of a desired ditch. Special resistors are positioned at all of the pivot points of the backhoe to act as sensors for relaying information to the computer. The output of the computer controls hydraulic valves which, in turn, operate the outriggers, boom, crowd and bucket of the backhoe assembly.

REFERENCES:
patent: 3487958 (1970-01-01), Shook et al.
patent: 3643828 (1972-02-01), Elliot
patent: 3831683 (1974-08-01), Ikeda et al.
patent: 3997071 (1976-12-01), Teach
patent: 4015729 (1977-04-01), Parquet et al.
patent: 4037742 (1977-07-01), Gustafsson
patent: 4044838 (1977-08-01), Wooldridge
patent: 4149251 (1979-04-01), Noordermeer et al.
patent: 4156317 (1979-05-01), Schmidt
patent: 4162708 (1979-07-01), Johnson

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