Jib assembly

Details Jib assembly Jib assembly

1992-03-19

1994-08-16

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Means maintaining platform level on angularly movable support

Swingable support

B66F 1104

Patent

active

053378547

ABSTRACT:
A jib assembly is disclosed, for use with an articulated boom carried by an aerial device, having a compact configuration of components which allows a high degree of freedom in the rotation of the jib in the vertical plane and reduced obstruction of the rotational adjustment of the bucket carrier on the boom in the horizontal plane, relative to existing arrangements. A chain and sprocket arrangement driven by a hydraulic motor powers rotation of the jib coaxially with the bucket shaft and, where a winch is used, with the axis of rotation of the winch. The arrangement simplifies the routing of hydraulic hoses and affords a more compact and less cluttered arrangement of components at the tip of the boom, which has safety advantages in the environment of a tight distribution of power lines, where distances between live and grounded apparatus are small.

REFERENCES:
patent: 3828941 (1974-08-01), Coutinho
patent: 4582206 (1986-04-01), Johnson
patent: 4838381 (1989-06-01), Michaud et al.

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