Mulching lawn mower blade and housing assembly

Harvesters – Motorized harvester – Having motor on ground-supported carrier


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56 175, 56295, 563201, A01D 3408, A01D 3473, A01D 3478, A01D 6900




A rotary mulching lawn mower is provided having an annular housing forming a toroidal internal cutting chamber in which is oriented a blade having a central axis for rotation. The blade has a series of blade portions extending radially outward from the central axis each having an end portion extending into the toroidal internal cutting chamber. The blade end portion directs cut grass upward into the cutting chamber. Each blade has an intermediate portion located between the central axis and the end portion having a substantially flat surface lying in a plane generally perpendicular to the axis of rotation. The intermediate portion is provided with a radially extending rib located intermediate the leading and trailing edge portions of the blade having a slope 12 projecting downwardly out of the plane for directing cut grass into the lawn upon rotation of the blade. The lawn mower of the preferred embodiment is driven by a battery powered electric motor.

patent: 2578880 (1951-12-01), Doyle
patent: 2697323 (1954-12-01), Horn
patent: 3085386 (1963-04-01), Slemmons
patent: 3212244 (1965-10-01), Wilgus
patent: 3729912 (1973-05-01), Weber
patent: 3910071 (1975-10-01), Thorud et al.
patent: 4031696 (1977-06-01), Fleigle
patent: 4189903 (1980-02-01), Jackson et al.
patent: 4312421 (1982-01-01), Pioch
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patent: 4446680 (1984-05-01), D'Alessandro
patent: 4887420 (1989-12-01), Cerny, Jr. et al.
patent: 4987729 (1991-01-01), Paytas
patent: 5117616 (1992-06-01), McLane
patent: 5184451 (1993-02-01), Savipakka et al.
patent: 5299414 (1994-04-01), Long


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