Excavating – Snow or ice removing or grooming by portable device – Scraper blade
Patent
1997-09-10
1999-05-25
Cherry, Johnny D.
Excavating
Snow or ice removing or grooming by portable device
Scraper blade
37285, 294 545, 294 59, E01H 502
Patent
active
059060603
ABSTRACT:
An improved manually pushed snow shovel in which the user's natural pushing force acts to alleviate stalling friction. A version of a manually pushed snow shovel having features of this invention comprises a blade with a leading edge, a handle attached to the blade, and at least one, although two are preferred, ski runner(s) attached to the blade. The ski runner(s) are attached such that when in the shovel is in use, the leading edge of the blade is at or behind the portion of bottoms of the ski runner(s) normally in contact with the ground. This ensures that the shovel pivot point or point of downward vertical force from the snow load is forward of the leading edge relative to forward movement of the shovel. As such, the user's natural forward pushing on the handle and hence indirectly to the blade results in the leading edge moving upwards away from the ground upon encountering increased friction due to heavy snow or rough ground surfaces.
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Calfa Jeffrey P.
Cherry Johnny D.
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