Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1990-09-14
1992-10-06
Huppert, Michael S.
Material or article handling
Vertically swinging load support
Shovel or fork type
29891, 298972, 52732, 52632, 52117, 212266, E02F 900
Patent
active
051526590
ABSTRACT:
A boom assembly for a work machine comprising: a pair of first and second members of which one end pivot part is connected pivotally to a base machine and the second end pivot part supports a loading tool pivotally. An inflecting part is provided in the middle of the longitudinal direction of boom, and a cross tie member which ties the said first and second members in pairs near the loading tool. In order to form a first member which is connected to a tractor and a second member which supports a loading tool, with horizontal and vertical planes of upper and lower C-channels, the lower C-channel is inserted into the upper C-channel and its adjoining edges are welded. In order to form the inflecting part, the first member which is connected to a tractor and the second member which supports the loading tool are joined in a manner wherein the upper side of it is opened and the lower side is butt welded. Both side planes of the open part are covered and welded with side connecting plates, bridging and overlapping to the vertical planes of the upper channels, and the upper part of the open part is covered and welded with an upper connecting plate, bridging and overlapping to the horizontal planes of the upper channels.
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Huppert Michael S.
Kubota Corporation
Underwood Donald W.
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