초록

A cutting disc (12) for a lawn mower, the disc (12) having a plurality of cutting blades (13) and being formed with apertures (23). Associated with the apertures (23) are fan blades (22) which force air downwardly through the disc (12) to aid in mulching cut grass.

대표청구항 ▼

[ We claim:] [1.] A lawn mower disc to pivotally support cutting blades, said disc comprising:a central portion providing a shaft engaging part via which the disc is driven about a predetermined axis;an inclined intermediate portion surrounding the central portion and extending downwardly and radial

[ We claim:] [1.] A lawn mower disc to pivotally support cutting blades, said disc comprising:a central portion providing a shaft engaging part via which the disc is driven about a predetermined axis;an inclined intermediate portion surrounding the central portion and extending downwardly and radially therefrom, the inclined intermediate portion having a plurality of apertures;a peripheral region below and surrounding the inclined intermediate portion and extending therefrom; andfan means to direct an air stream downwardly through the disc, said fan means being positioned radially from said axis, said fan means including a plurality of blades extending upwardly from said inclined intermediate portion and associated with the apertures so that the blades move air downwardly therethrough upon rotation of the disc.