Boom assembly

Details Boom assembly Boom assembly

2005-09-13

2008-10-28

Underwood, Donald (Department: 3652)

Material or article handling

Vertically swinging load support

Shovel or fork type

C052S111000, C029S891000

Reexamination Certificate

active

07442001

ABSTRACT:
A boom assembly is bent at a longitudinal center portion thereof to present an upwardly convex shape. The assembly includes a front boom body and a rear boom body. The front boom body and the rear main body each includes a main body consisting essentially of a pair of right and left lateral plates and a top plate interconnecting upper edges of the respective lateral plates. The main body is formed with an upper face and a lower edge thereof being bent in a longitudinal direction thereof into an arc face having a predetermined radius of curvature. The front or rear main body further includes a bottom plate disposed downwardly of the top plate and between the right and left lateral plates. Each main body is formed by bending a plate member into a reverse U-shaped cross section and each bottom plate is comprised of a plate member provided separately from the plate member forming the main body.

REFERENCES:
patent: 4439089 (1984-03-01), Anderson et al.
patent: 5152659 (1992-10-01), Waka
patent: 6572323 (2003-06-01), Schupback
patent: 2005/0111953 (2005-05-01), Westendorf et al.
patent: 6-53648 (1994-07-01), None
patent: 11-158907 (1999-06-01), None

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