Patent ID: 8347593

Claim:
A push mower comprising: a main body configured to move along a ground, the main body defining a slit that includes a slit portion and a plurality of cutaway portions; a blade attached to the main body; a height adjustment lever; and a height adjustment mechanism configured to change a height of the blade from the ground based on a position of the height adjustment lever, wherein the height adjustment lever comprises: a shaft extending through the slit, and attached to the height adjustment mechanism; a grip fixed to the shaft and having a longitudinal orientation that is perpendicular to an extending orientation of the shaft; and a lock member accommodated inside the grip, the lock member including: a base portion within the grip that extends from an approximate center of the grip towards an opening in the grip, a push button that is formed on the base portion and protrudes to an outside of the grip through the opening in the grip, and an extending portion that extends from the base portion to an outside of the grip into the main body, the extending portion further includes an engaging part, and the engaging part faces the slit; wherein the height adjustment lever is configured to be unmovable when the lock member is at a lock position and be movable when the lock member is at an unlock position, and when the push button is pushed, the lock member is configured to move in a direction perpendicular to the extending orientation of the shaft with respect to the grip from the lock position to the unlock position, and the engaging part moves out of one of the plurality of cutaway portions and into the slit portion such that the shaft of the height adjustment lever is movable along the slit portion.