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A power lawn mower has a cutter blade mounted on a vertical output shaft driven by an engine and extending substantially horizontally, and a housing covering the cutter blade. The power lawn mower has a throw-out plate for throwing out the grass cut by the cutter blade, the throw-out plate being mou

A power lawn mower has a cutter blade mounted on a vertical output shaft driven by an engine and extending substantially horizontally, and a housing covering the cutter blade. The power lawn mower has a throw-out plate for throwing out the grass cut by the cutter blade, the throw-out plate being mounted on the output shaft above the cutter blade within the housing and extending substantially horizontally. The throw-out plate is angularly spaced from the cutter blade and positioned therebehind in the direction of rotation of the throw-out plate. The throw-out plate is shorter than the cutter blade and substantially flat. The throw-out plate includes a throw-out arm having a leading edge in the direction of rotation thereof and curved progresively rearwardly in the same direction from a proximal end of the throw-out arm to a radially outward end thereof. The housing has a front half portion pivotably mounted on a housing body for upward tilted movement about an axis inclined with respect to the direction of travel of the power lawn mower.

대표청구항 ▼

A power lawn mower comprising: an engine having an output shaft extending vertically downwardly; a cutter blade having a central portion mounted on said output shaft for rotation therewith , a cutting edge at each end of said cutter blade and downward-sloped intermediate portions of said cutter blad

A power lawn mower comprising: an engine having an output shaft extending vertically downwardly; a cutter blade having a central portion mounted on said output shaft for rotation therewith , a cutting edge at each end of said cutter blade and downward-sloped intermediate portions of said cutter blade joining each cutting edge to said central portion of said cutter blade; a housing mounted to a lower portion of said engine and positioned at a lower portion of said output shaft to cover said cutter blade, said housing having a substantially flat ceiling portion and a substantially cylindrical portion extending downwardly from the periphery of said ceiling portion; and a throw-out plate mounted on said output shaft between said ceiling portion of said housing and said cutter blade, said throw-out plate having a pair of throw-out arms each being substantially flat so as not to generate an air flow and each having a distal end portion positioned between and away from both said cutter blade and said ceiling portion, each throw-out arm having a curved leading edge along a substantially whole front edge thereof for pushing cut grass outwardly along said leading edge.