Excavator

Details Excavator Excavator

2006-05-23

2006-05-23

Novosad, Christopher J. (Department: 3671)

Earth working

Mounting for pushed tool at end of motor vehicle

Transversely mounted blade

C172S701100, C037S266000

Reexamination Certificate

active

07048072

ABSTRACT:
In an excavator, a blade surface for performing an earth removal operation while a blade is set in contact with the ground satisfies the following conditions: A) upward pushing force components Fu that push dirt upward along the blade surface are generated; B) an upper part of the blade surface has a release surface portion in which a forward-upward release force that rolls the dirt pushed upward by Fu forward is generated; C) when downward pressing force components Fd are generated in response to the generated release force, a total downward pressing force ΣFd> a total upward pushing force ΣFu; and D) if each Fu is given a positive value and if each Fd and a reduced amount of each Fu caused when the dirt hits the release surface portion are given negative values, a value of force at an endmost section of the release surface portion is positive.

REFERENCES:
patent: 2004/0237353 (2004-12-01), Takayuki et al.
patent: 3039364 (1982-05-01), None
patent: 0273400 (1987-12-01), None
patent: 11093209 (1999-04-01), None
patent: 2450913 (1980-10-01), None
patent: 2002-322668 (2002-11-01), None

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