Earth working – Mounting for pushed tool at end of motor vehicle – Transversely mounted blade
Reexamination Certificate
2006-08-24
2010-02-02
Pezzuto, Robert E (Department: 3671)
Earth working
Mounting for pushed tool at end of motor vehicle
Transversely mounted blade
C037S266000
Reexamination Certificate
active
07654336
ABSTRACT:
A blade has an overall blade width of W, and includes a central front portion, interposition front portions, and side front portions. A straight first edge section is arranged on the lower end of the central front portion. Each of the front surfaces of the central front portion, the interposition front portions, and the side front portions is formed in an arc-shaped surface that has a prescribed radius R2. The radius R2satisfies the following formula: R2=(0.7 to 1.0)×H, where H is the height from the edge of the first edge section to the top end of a soil retaining plate in side view in a digging posture when the edge angle α of the edge sections is an angle of 40° to 55°.
REFERENCES:
patent: 5392864 (1995-02-01), Lindenmuth
patent: D477610 (2003-07-01), Matsumoto et al.
patent: 6938701 (2005-09-01), Matsumoto et al.
patent: 05-42344 (1993-06-01), None
patent: WO-93/22512 (1993-11-01), None
patent: WO-03/091504 (2003-11-01), None
patent: WO-2004-044337 (2004-05-01), None
Matsumoto Norihisa
Wada Tatsuo
Global IP Counselors
Komatsu Ltd.
Pezzuto Robert E
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