Single stage snowthrower

Details Single stage snowthrower Single stage snowthrower

1989-06-12

1990-08-28

Taylor, Dennis L.

Excavating

Snow or ice removing or grooming by portable device

Motorized rotary excavating tool

37260, 37244, E01H 509

Patent

active

049514032

ABSTRACT:
The invention is directed to a single stage snowthrower wherein a flat rear wall section of an impeller housing, a rear wall of a chute opening and the central axis of an external chute are all aligned to more efficiently remove snow. A gate is also provided to control the recirculation of snow through the impeller housing. The gate may comprise a sliding dam movable along a straight line into the housing. In a further embodiment of the present invention a pivotable gate or reciprocable plate is disposed between sidewalls of the impeller housing to vary the throat area into the chute opening in accordance with the wet or dry conditions of the snow.

REFERENCES:
patent: 2219204 (1940-10-01), Wandscheer
patent: 2623308 (1952-12-01), Lamy
patent: 3045369 (1962-07-01), Howe, Jr.
patent: 3078603 (1963-02-01), Erstgaard et al.
patent: 3252233 (1966-05-01), Simi
patent: 3253356 (1966-05-01), Haban
patent: 3452460 (1969-07-01), Cope et al.
patent: 3488869 (1970-01-01), Heth et al.
patent: 3755931 (1973-09-01), Gisler
patent: 3805421 (1974-04-01), Kamlukin
patent: 4312143 (1982-01-01), Kado
patent: 4651452 (1987-03-01), Husso
patent: 4694594 (1987-09-01), Thorud et al.

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