Integral box section boom arm

Details Integral box section boom arm Integral box section boom arm

1978-10-12

1981-04-07

Kunin, Stephen G.

Material or article handling

Vertically swinging load support

Shovel or fork type

371175, 52731, 254124, 212261, 212266, B66C 2300, E02F 376, E04C 330

Patent

active

042603226

ABSTRACT:
A boom arm of a boom assembly is formed of a pair of side walls integrated into a box boom structure where the top and bottom plates are roll formed with transition edges providing a weld bed for welds attaching the side walls to the top and bottom plates. The particular cross sections of the top and bottom plates provide a weld blow-through preventing barrier and also dimensional guidance and tolerance control during assembly of the boom arm.

REFERENCES:
patent: T966007 (1978-01-01), Liehr et al.
patent: 2668631 (1954-02-01), Reese
patent: 3273299 (1966-09-01), Hartung, Jr.
patent: 3722864 (1973-03-01), Borer et al.
patent: 4064947 (1977-12-01), Cole
patent: 4134507 (1979-01-01), Piercy et al.
patent: 4156488 (1979-05-01), Stark
patent: 4162872 (1979-07-01), Grooss et al.

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