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US 5,884,463 AGranted
Convertible mower with rotary disc mechanism
OwnerKaz Darzinskisinventor
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OwnerKaz Darzinskisinventor
Estimating the term…
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.
In a power mower, the combination of a housing having a top wall and a depending skirt joined to said top wall, a source of power for the mower, a vertical spindle operatively connected near its upper end to said source of power and extending downwardly into said housing, a blade fixed to the lower portion of said spindle and rotated thereby in a horizontal plane within the lower portion of said housing, and a disc fixed to an intermediate part of said spindle for rotation by the spindle in a horizontal plane located within said housing and in spaced relation between said blade and said top wall of said housing, wherein said disc includes an outer portion extending radially outwardly from the inner portion in essentially the same plane as said inner portion, said inner portion of said disc containing a number of downwardly extending wings, wherein the periphery of said disc abuts a number of rollers for rotating an attached string trimmer, each roller with a vertical axis, and each roller located in a cutout in the housing.
In a power mower, the combination of a housing having a top wall and a depending skirt joined to said top wall, a source of power for the mower, a vertical spindle operatively connected near its upper end to said source of power and extending downwardly into said housing, a blade fixed to the lower portion of said spindle and rotated thereby in a horizontal plane within the lower portion of said housing, and a disc fixed to an intermediate part of said spindle for rotation by the spindle in a horizontal plane located within said housing and in spaced relation between said blade and said top wall of said housing, wherein said disc includes an outer portion extending radially outwardly from the inner portion in essentially the same plane as the inner portion, said outer portion of said disc containing a number of deflector tabs to propel air and clippings toward said inner portion of the disc, said deflector tabs created by cutouts of said disc extending downwardly from said disc and perpendicular to said disc, said deflector tabs having, in reference to the rotation of the disc, a leading edge portion tangent to the circle formed by the radius of the disc at the point of the leading edge, said deflector tabs having behind the leading edge a curvilinear portion each point of which is closer to the center of the disc than the leading edge portion.
In a power mower, the combination of a housing having a top wall and a depending skirt joined to said top wall, a source of power for the mower, a vertical spindle operatively connected near its upper end to said source of power and extending downwardly into said housing, a blade fixed to the lower portion of said spindle and rotated thereby in a horizontal plane within the lower portion of said housing, and a disc fixed to an intermediate part of said spindle for rotation by said spindle in a horizontal plane located within said housing and in spaced relation between said blade and said top wall of said housing, wherein said disc includes an outer portion extending radially outwardly from the inner portion in essentially the same plane as said inner portion, said inner portion of said disc containing a number of downwardly extending wings, said outer portion of said disc containing a number of deflector tabs to propel air and clippings toward said inner portion of the disc, the deflector tabs created by cutouts of said disc extending downwardly from said disc and perpendicular to said disc, said deflector tabs having, in reference to the rotation of the disc, a leading edge portion tangent to the circle formed by the radius of the disc at the point of the leading edge, said deflector tabs having behind the leading edge a curvilinear portion each point of which is closer to the center of the disc than the leading edge portion.
Dependencies are inferred from the claim text.