Excavating – Snow or ice removing or grooming by portable device – Vehicle mount with obstacle responsive trip – or yieldable tool
Reexamination Certificate
2007-08-17
2009-06-09
Beach, Thomas A (Department: 3671)
Excavating
Snow or ice removing or grooming by portable device
Vehicle mount with obstacle responsive trip, or yieldable tool
C037S268000, C037S903000, C037S233000
Reexamination Certificate
active
07543401
ABSTRACT:
A plow has an upper blade. A lower forward-plowing blade is coupled to the upper blade. The lower forward-plowing blade is configured to engage material to be plowed when the plow is plowing in a forward direction. A back-blade is pivotally coupled to the upper blade and elastically coupled to the upper blade. The back-blade is configured to engage material to be plowed when the plow is plowing in a reverse direction opposite the forward direction.
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Beach Thomas A
Buck Matthew R
Hughes Doug
Leffert Jay & Polglaze P.A.
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