Single stage snowthrower
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United States of America Patent
Stats
-
Apr 17, 1990
Issued Date -
N/A
app pub date -
Jul 27, 1988
filing date -
Jul 20, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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 dam 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.
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