Earth working – Mounting for pushed tool at end of motor vehicle – Transversely mounted blade
Reexamination Certificate
2007-03-20
2007-03-20
Novosad, Christopher J. (Department: 3641)
Earth working
Mounting for pushed tool at end of motor vehicle
Transversely mounted blade
C037S266000, CD15S032000
Reexamination Certificate
active
10982699
ABSTRACT:
An object of the invention is to provide a blade preferable for being mounted on various kinds of work machines, particularly work machines for digging, carrying of soil and leveling, in which increase in a quantity of soil per tractional force is achieved with a simple structure to reduce consumption horsepower and increase fuel consumption efficiency thereby leading to low cost. A blade comprises a central front face section having a linear first cutting edge at a bottom end thereof, a jointed front face section having a second cutting edge which continues from the first cutting edge and extends backward in an expanding manner at a predetermined angle, and an end front face section having a third cutting edge which continues from the second cutting edge and extended forward in an expanding manner at a predetermined angle. Each blade front face of the central front face section, the jointed front face section and the end front face section is constructed of a continuously curved concave face in upward and downward directions thereof. Preferably, a blade width of the first cutting edge is set larger than an internal width between right and left traveling units or a distance between opposing faces of a pair of right and left brackets for lift cylinders.
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patent: D477610 (2003-07-01), Matsumoto et al.
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patent: 2001-040693 (2001-02-01), None
Matsumoto Norihisa
Tamaru Masatake
Everest Intellectual Property Law Group
Komatsu Ltd.
Leonard Michael S.
Novosad Christopher J.
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