Harvesters – Motorized harvester – Including driven air-blower unit
Patent
1992-07-20
1994-05-17
Bagnell, David J.
Harvesters
Motorized harvester
Including driven air-blower unit
563201, A01D 3472
Patent
active
053117271
ABSTRACT:
An air floated cutting apparatus is provided having a housing configured to define a cup-shaped centrifuge chamber along an inner peripheral wall of the housing for centrifuging cuttings. An impeller is located in the housing to force air outwardly along an interior wall of the housing to pressurize the interior of the housing. The air moves outwardly and downwardly along the interior wall in a top portion of the housing and then inwardly and downwardly along the interior wall in a bottom portion of the housing toward a support surface beneath the housing. The lowermost portion of the interior housing wall is angled downwardly less than 30 degrees with respect to a horizontal axis for directing air inwardly and downwardly at a predetermined angle. In one embodiment the interior housing wall defines the centrifuge chamber in the presence of the downward air flow. In another embodiment, means is provided for defining a centrifuge chamber separate from an air pressure chamber in which air flows downwardly. The centrifuge chamber includes a shelf for centrifuging grass cuttings within the centrifuge chamber. A glide plate is formed on a bottom part of the housing to inhibit the loss of air pressure from the housing and to enhance the gliding movement of the cutting apparatus over the ground or other support surface. Air pressure acting on an undersurface of the glide plate also enhances the lifting force on the housing.
REFERENCES:
patent: 3170276 (1965-02-01), Hall
patent: 3186151 (1965-06-01), Hansom
patent: 3293836 (1966-12-01), Heth
patent: 3400523 (1968-09-01), Klingofstrom et al.
patent: 3838558 (1974-10-01), Goodchild
patent: 4245455 (1981-01-01), Martin
patent: 5048275 (1991-09-01), Fassauer
patent: 5101615 (1992-05-01), Fassauer
patent: 5117619 (1992-06-01), Fassauer
Bagnell David J.
Thompson Daniel V.
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