Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Patent
1985-09-12
1986-10-21
Eickholt, E. H.
Excavating
Snow or ice removing or grooming by portable device
Motorized rotary excavating tool
37233, E01H 509
Patent
active
046177477
ABSTRACT:
An improved single stage snowthrower (2) includes an open front portion (14) having a rotatable impeller (30) contained therein. Impeller (30) contains at least one outwardly extending paddle (32) having a complex curved shape. Paddle (32) includes a central snowthrowing section (34) which is curved forwardly from its midpoint to each side thereof to be concave with this central section (34) extending over at least the middle 50 percent of the entire paddle's length. Two end sections (36) fill out the remaining length of paddle (32) and are shaped to function as augers for moving a relatively small volume of snow inwardly onto the central snowthrowing section (34). Improved impeller (30) can be used with an inverted funnel-shaped collecting chamber (22) located in the rear wall (18) of front portion (14) of snowthrower (2). Collecting chamber (22) is sized and shaped to approximate the size and shape of the inwardly tapered stream which is thrown off central section (34).
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Brochure-"Jacobsen, Mowers, Riders & Tractors" 80-C-1, Jan. 1980.
Thorud Richard A.
White, III Donald M.
Eickholt E. H.
Miller James W.
The Toro Company
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