Patent ID: 7222476

Claim:
A hand-pushed mower comprising: a blade height setter being disposed in front of a wheel and behind a mowing blade to keep a blade height at a predetermined value; the blade height setter being provided with a sphere rolling on a ground, plural small spheres holding the sphere as to freely roll, a semispherical receiving member forming a gap with an upper half of a spherical face of the sphere to hold the plural small spheres, and a stopping ring frame having a scraping ring frame portion on a lower part, an upper ring frame portion, and plural connecting portions in a vertical direction; the scraping ring frame portion being disposed near a surface of the sphere to scrape off foreign matter stuck to the surface; the scraping ring frame portion and the upper ring frame portion being connected by the plural connecting portions; and remaining portions of the stopping ring frame surrounded by the scraping ring frame portion, the upper ring frame portion, and the plural connecting portions forming window portions for removing foreign matter.