Patent ID: 6470602
Filing Date: 2002-10-29
Classification: E01H

Abstract:
A single-stage snowthrower for use on a ground surface, said snowthrower comprising:a frame; a handle coupled to the frame, said handle for directing the snowthrower across the ground surface; an impeller coupled to the frame and in engaging contact with the ground surface, said impeller having a force normal to the ground surface associated with the engaging contact with the ground surface; and an impeller positioning device coupled to the snowthrower, said impeller positioning device being movable relative to the handle between a first orientation and a second orientation, wherein when the impeller positioning device is in said first orientation the normal force developed between the impeller and the ground surface is a first value, and wherein when the impeller positioning device is in the second orientation the normal force is a second value different than the first value.