Working machine with structure for assembling boom thereof

Details Working machine with structure for assembling boom thereof Working machine with structure for assembling boom thereof

2009-04-17

2011-12-13

Underwood, Donald (Department: 3652)

Material or article handling

Vertically swinging load support

Shovel or fork type

C029S03300H, C029S891000, C029S897200, C414S680000

Reexamination Certificate

active

08075242

ABSTRACT:
Bosses extending in the boom width direction are provided in a front end part of a main boom body rotated upward, and hooks opening downward are provided in a base end part of an extension boom body rotated downward. The above hooks and the bosses are arranged so as to satisfy a condition that at the time of second relative rotation by a two-step pin hole matching method of matching pin holes in order from the upper side and with a different center, the hooks and the bosses are moved away from each other while lower pin holes are matched with each other.

REFERENCES:
patent: 4360311 (1982-11-01), Dufour
patent: 5484250 (1996-01-01), Gilmore et al.
patent: 7419350 (2008-09-01), Lombardo et al.
patent: 64-28452 (1989-02-01), None
patent: 2535667 (1997-02-01), None

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