Power arm fitted with coupling devices for a member provided to

Details Power arm fitted with coupling devices for a member provided to Power arm fitted with coupling devices for a member provided to

1979-12-12

1981-11-03

Eickholt, E. H.

Static structures (e.g., buildings)

Mechanism operated relatively movable shaft assembly

Fluid pressure actuated

37103, 414727, 52116, B66C 2306, E02F 502

Patent

active

042978157

ABSTRACT:
The invention relates to a power arm comprising four faces, two of which being constituted by plates, which arm is mounted for pivotment about an axis and with respect to a structure, and is fitted with the coupling lug of a jack comprising a pivoting axis of said jack and its support, permitting a deflection of said jack which is parallel to the deflection of the arm, said support being constituted by extended portions of the plates.
The arm comprises a cross piece of which the length 1 is substantially equal to the spacing between the said extended portions and which is situated between the said extended portions, and transversed by the axis, a threaded end of which cooperates with a nut to hold the cross piece in position between the said extended portions.
An application is found in the production of a shovel boom.

REFERENCES:
patent: Re23989 (1955-04-01), Wills et al.
patent: 2802584 (1957-08-01), Przybylski
patent: 2828038 (1958-03-01), Dorkins
patent: 2973874 (1961-03-01), Holopainen
patent: 3515298 (1970-06-01), Guinot
patent: 3525448 (1970-08-01), Bauer
patent: 3589539 (1971-06-01), Witwer
patent: 4077140 (1978-03-01), Branconi

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