Handling boom comprising a main boom and an additional boom

Details Handling boom comprising a main boom and an additional boom Handling boom comprising a main boom and an additional boom

1991-04-23

1992-08-25

Swinehart, Edwin L.

Traversing hoists

Methods

212177, B66C 2362

Patent

active

051409291

ABSTRACT:
The invention relates to a handling boom comprising a main boom and an additional boom which is pivotally mounted relative to the main boom about a first axis, the additional boom comprising a support frame pivotally mounted on the main boom about a first axis and a manipulation jib pivotally mounted on the support frame about a horizontal second axis. According to the invention, the second pivot axis is disposed close to the top face of the additional boom in such a manner as to enable the manipulation jib to be pivoted upwards from a first deployed configuration of the additional boom. The invention is applicable to making a handling boom including a telescopic main boom and which is relatively lightweight and reliable.

REFERENCES:
patent: 3360142 (1967-12-01), Jamison et al.
patent: 3430778 (1969-03-01), Brown
patent: 3830376 (1974-08-01), Fritsch
patent: 4053058 (1977-10-01), Jensen et al.
patent: 4091936 (1978-05-01), Wuerflein et al.
patent: 4431109 (1984-02-01), Behrendt et al.
patent: 4491229 (1985-01-01), Behrendt et al.
patent: 4621742 (1986-11-01), Rathi
patent: 4828124 (1989-05-01), Iga

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