Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Patent
1981-02-25
1982-08-31
Eickholt, E. H.
Excavating
Snow or ice removing or grooming by portable device
Motorized rotary excavating tool
37251, E01H 500
Patent
active
043465277
ABSTRACT:
Snow removal apparatus has a housing open at its front end in which a central fan blower is mounted. Mounted to the housing forwardly of and flanking the central fan are a pair of vertically rotating clearing screws. Each of the screws is also provided with a deflector which is movable in a circular path concentric with the axis of rotation so as to provide a selectively positionable backing or rear wall therefor.
REFERENCES:
patent: 1641723 (1927-09-01), Zinn
patent: 1671358 (1928-05-01), Fahrney
patent: 3618748 (1970-03-01), Burkett
patent: 4151663 (1979-05-01), Schmidt
Alfred Schmidt GmbH
Eickholt E. H.
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