Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Reexamination Certificate
2005-09-06
2005-09-06
Pezzuto, Robert E (Department: 3671)
Excavating
Snow or ice removing or grooming by portable device
Motorized rotary excavating tool
Reexamination Certificate
active
06938364
ABSTRACT:
A two stage snowthrower includes snow removal components comprising a transversely extending auger housed within an auger housing. A generally cylindrical impeller housing is joined to a rear wall of the auger housing. A rotatable impeller within the impeller housing rotates within a circular cross-section of the impeller housing to throw snow upwardly through a snow discharge pipe. The snow discharge pipe is offset to one side of the impeller housing such that a first side wall of the snow discharge pipe is longer than a second side wall of the snow discharge pipe. The first side wall of the snow discharge pipe is joined to the circular cross-section of the impeller housing along a first edge where snow is thrown upwardly by the impeller. The circular cross-section of the impeller housing resumes at a second edge which is displaced laterally and below a lower edge of the second side wall.
REFERENCES:
patent: 5127174 (1992-07-01), Takeshita
patent: 5209003 (1993-05-01), Maxfield et al.
patent: 6453583 (2002-09-01), Hanafusa et al.
patent: 6539649 (2003-04-01), Sueshige et al.
Declaration of Jerold F. Patron—Nov. 23, 2001.
Murray David A.
Patrin Jerold F.
White, III Donald M.
Miller James W.
Pezzuto Robert E
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