Material or article handling – Vertically swinging load support – Shovel or fork type
Reexamination Certificate
2011-06-28
2011-06-28
Underwood, Donald (Department: 3652)
Material or article handling
Vertically swinging load support
Shovel or fork type
C414S685000
Reexamination Certificate
active
07967547
ABSTRACT:
In a work machine1, an angle θ formed by a first line segment L1connecting a pivot position Y of a bell crank11on a boom10and a pivot position X of the bell crank11on a connecting link13, and a second line segment L2connecting the pivot position Y of the bell crank11on the boom10and a pivot position W of the bell crank11on the tilt cylinder12on a bucket20side is 176 (deg) or less, an angle α formed by the second line segment L2and a line segment L3connecting the pivot position W of the bell crank11on the tilt cylinder12and a pivot position Z of the tilt cylinder12on a working structure is 72.3 (deg) or less, and, in a case where the bucket20is set at a top position, a lowering angle ω of a front end of a lower surface of the bucket20is 4.5 (deg) or less.
REFERENCES:
patent: 2876921 (1959-03-01), Salna
patent: 3321215 (1967-05-01), Kampert
patent: 4154349 (1979-05-01), Christensen
patent: 5201235 (1993-04-01), Sutton
patent: 5501570 (1996-03-01), Mozingo
patent: 6309171 (2001-10-01), Arch et al.
patent: 2006/0291987 (2006-12-01), Osanai et al.
patent: 2009/0003984 (2009-01-01), Osanai et al.
patent: 43-1693 (1943-01-01), None
patent: 43-1693 (1968-01-01), None
patent: 63-22499 (1988-01-01), None
patent: 01-295922 (1989-11-01), None
patent: 06-010287 (1994-02-01), None
patent: 06-293498 (1994-10-01), None
patent: 2838251 (1998-10-01), None
patent: 11-343631 (1999-12-01), None
patent: WO 2005/012653 (2005-02-01), None
Japanese Office Action (and English translation thereof dated Jul. 29, 2008, issued in a counterpart Japanese Application.
Final Office Action dated Apr. 23, 2009 in related U.S. Appl. No. 10/566,484.
“Construction Machinery Photo Collection”, Japan Industrial Publishing Co., Ltd., Feb. 15, 1970.
Holtz Holtz Goodman & Chick PC
Komatsu Ltd.
Underwood Donald
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