Harvesters – Motorized harvester – Including driven air-blower unit
Patent
1997-12-08
1999-03-23
Shackelford, Heather
Harvesters
Motorized harvester
Including driven air-blower unit
56 138, 56 175, 56255, 56DIG20, A01D 8710, A01D 3466
Patent
active
058844635
ABSTRACT:
A mowing mechanism having a spindle rotatively driven by a power source, a blade having a radially inner portion coupled for rotation with the spindle and a radially outer portion for cutting vegetation, a housing within which the blade rotates, and a disc coupled for rotation with the spindle and operatively carried within the housing for rotation with the blade and spaced above the blade. The inner and outer portions of the disc serve to channel air and clippings to the inner portion of the blade. The rotating disc prevents accumulation of the grass clippings beneath the disc and housing, and enhances airflow within the housing due to viscous drag or friction between the disc and the air within the housing. Deflectors carried by the disc are designed to further enhance airflows and generally deflect clippings back toward the inner portion of the blade for mulching. A door hingedly fixed on the housing is provided a horizontal roof member extending over the top of part of the housing can be opened to form a discharge outlet. The combination of the readily removable or replaceable disc and a door capable of being opened serve to conveniently convert the mower from mulching mode to an alternate discharge mode. A roller in a cutout in the housing serves to stiffen the disc and to power a string trimmer fixed outside of the housing.
REFERENCES:
patent: 3049854 (1962-08-01), Denney
patent: 3118267 (1964-01-01), Shaw
patent: 4083166 (1978-04-01), Haas
patent: 4161096 (1979-07-01), Biberger
patent: 4905461 (1990-03-01), Heuer
patent: 5035107 (1991-07-01), Scarborough
patent: 5142851 (1992-09-01), Lydy et al.
patent: 5483790 (1996-01-01), Kuhn et al.
patent: 5560189 (1996-10-01), DeVillier et al.
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