Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Patent
1988-08-17
1989-08-01
Eickholt, Eugene H.
Excavating
Snow or ice removing or grooming by portable device
Motorized rotary excavating tool
198676, E01H 509
Patent
active
048522791
ABSTRACT:
A blade is provided for a digging implement, especially a snowthrower. The implement is of the type having an auger blade arranged for advancement sideways into a body of material to be removed. The blade consists of a band with a leading edge wound along a blade axis, preferably helically, and a tapered body that slopes towards the axis away from the material discharge of the device. In the case of a snowthrower, where the material discharge is at the center, the blade will have two sections, wound oppositely around the blade axis and tapering in opposite directions towards the axis, away from the center discharge. The blade performs a slicing action on the material to be removed rather than scraping material from its face as is the case with the conventional snowthrower and analogous implements. The blade is thus aggressive and draws itself into the material, reducing the power requirements of both the blade and the system for propelling it into the material.
REFERENCES:
patent: 2769255 (1956-11-01), Mead
patent: 2787064 (1957-04-01), Schiller
patent: 3073100 (1963-01-01), Kingsley
patent: 3253356 (1966-05-01), Haban
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patent: 4123857 (1978-11-01), Enters et al.
patent: 4150501 (1979-04-01), Hayashi
patent: 4322896 (1982-04-01), Miyazawa et al.
Ade Stanley G.
Battison Adrian D.
Eickholt Eugene H.
Met-Line Inc.
Thrift Murray E.
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