초록 ▼

A mulching lawn mower has a closed cutting chamber in a mulching mode such that the grass clippings are confined within the cutting chamber except for when they fall out through the open bottom face of the chamber. The cutting chamber has a first portion of toroidal or doughnut form generally closel

A mulching lawn mower has a closed cutting chamber in a mulching mode such that the grass clippings are confined within the cutting chamber except for when they fall out through the open bottom face of the chamber. The cutting chamber has a first portion of toroidal or doughnut form generally closely surrounding the blade tips. In addition, the front portion of the cutting chamber includes a forwardly protruding wedge-shaped extension having side walls that converge towards one another in a pie-shaped fashion. The wedge-shaped extension further includes a top wall that extends between the side walls. This top wall is sloped or inclined downwardly as it extends to the front of the mower such that the height of the wedge-shaped extension gradually decreases until the wedge-shaped extension disappears at its front edge. The wedge-shaped extension reduces power consumption of the mower when the mower is placed in its mulching mode and is used to mulch grass.

대표청구항 ▼

A mulching rotary lawn mower, which comprises: (a) a cutting blade; (b) a motive means for rotating the blade in a plane of rotation about a generally vertical rotational axis; (c) a cutting chamber, movably supported by a plurality of ground engaging wheels, for surrounding and enclosing the cuttin

A mulching rotary lawn mower, which comprises: (a) a cutting blade; (b) a motive means for rotating the blade in a plane of rotation about a generally vertical rotational axis; (c) a cutting chamber, movably supported by a plurality of ground engaging wheels, for surrounding and enclosing the cutting blade over its top and sides when mulching, the cutting chamber being generally toroidal in form; and (d) a forwardly extending, wedge-shaped extension provided over a forward portion of the cutting chamber, the wedge-shaped extension decreasing in width from its junction with the cutting chamber as it extends forwardly, the junction between the extension and the cutting chamber being substantially unobstructed.