Linkage to allow increased angular rotation of backhoe boom

Details Linkage to allow increased angular rotation of backhoe boom Linkage to allow increased angular rotation of backhoe boom

1978-07-20

1980-07-15

Kunin, Stephen G.

Material or article handling

Vertically swinging load support

Shovel or fork type

414685, E02F 300

Patent

active

042125820

ABSTRACT:
A backhoe boom is pivotally connected to a swing frame for vertical movement relative thereto. A power extendable and retractable linkage is connected between the swing frame and the boom and includes a hydraulic actuator having one end pivotally connected to the boom and having its other end pivotally connected to respective first ends of a pair of links having respective second ends respectively pivotally connected to the boom and to the swing frame. The links make it possible for the actuator to position the boom in a raised transport position wherein a connection of an outer end of the boom with a dipperstick is located rearwardly of a transverse vertical plane extending through a connection of an inner end of the boom with the swing frame.

REFERENCES:
patent: 2529338 (1950-11-01), Hoover
patent: 2995261 (1961-08-01), Soyland et al.
patent: 3376984 (1968-04-01), Long et al.
patent: 3703973 (1972-11-01), Nilsson
patent: 3896950 (1975-07-01), McCain

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