Excavating – Snow or ice removing or grooming by portable device – Vehicle mount with obstacle responsive trip – or yieldable tool
Reexamination Certificate
2005-10-11
2010-06-08
Will, Thomas B (Department: 3671)
Excavating
Snow or ice removing or grooming by portable device
Vehicle mount with obstacle responsive trip, or yieldable tool
C037S266000, C037S268000, C172S816000
Reexamination Certificate
active
07730641
ABSTRACT:
Flexible suspension of colter element (1) of a snowplough furnished with a body (5), a blade (3) as its extension, colter element (1) that gets in contact with the surface to be ploughed, where for the colter element (1) a tilt suited for the purpose is arranged, a.o. a cutting angle. Colter element (1) is fitted to dodge an obstacle in its cutting angle by backing up, whereby the fixing arrangement of colter element (1) has an open space formed for moving plate (13) fitted as extension of the colter element, in which space said moving plate is arranged to glide, and the arrangement includes a spring organ (9) the spring impact of which is arranged to hinder the colter element from backing up.
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Hagie Manufacturing Company
Jackson Douglas E.
McGowan Jamie L
Stites & Harbison PLLC
Will Thomas B
LandOfFree
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