Excavator having a swivel joint between the main arm and the jib

Details Excavator having a swivel joint between the main arm and the jib Excavator having a swivel joint between the main arm and the jib

1968-03-08

1976-12-28

Pulfrey, Robert E.

37103, E02f 332

Patent

active

039996700

ABSTRACT:
An excavator comprising a main arm, a jib, a crank arm and a bucket. A swivel joint connects the main arm and the jib. The jib can be turned out of the plane of the main arm and thus be inclined sideways. Digging of an embankment at an oblique angle and digging road ditches with a gradient are thus permitted.

REFERENCES:
patent: 2847134 (1958-08-01), Slate
patent: 3027026 (1962-03-01), Couguet
patent: 3149737 (1964-09-01), Guinot
patent: 3197049 (1965-07-01), Schwing
patent: 3231116 (1966-01-01), Powell

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