Excavating – Snow or ice removing or grooming by portable device – Snow or ice surface groomer
Patent
1990-06-22
1991-08-20
Novosad, Stephen J.
Excavating
Snow or ice removing or grooming by portable device
Snow or ice surface groomer
37243, 37DIG3, 56295, 56DIG9, E01H 509, A01D 7500
Patent
active
050403150
ABSTRACT:
An ice scarifying tool replaces the grass cutting blade of a conventional rotary-type power lawn mower, so that, as the mower is operated over icy surface and the tool rotates in a plane substantially parallel to an icy ground surface, depending fingers chip and scarify the surface to provide improved traction thereon. The tool comprises a support plate which may be in the shape of a substantially rectangular elongate bar, a disc or a cruciform. Coiled ice scarifying fingers are attached to the plate. An ice scarifying tip at the distal end of each finger extends groundward from the support plate. A bag attachment or auxiliary blower may be provided for removal of the chipped ice, or it may be removed by power sweeper or plow.
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W. F. Laverty, Winter Sand Ingestion as it Affects Aircraft Engine Deterioration, Pratt & Whitney, Aug. 3, 1989.
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