Patent ID: 8578687
Filing Date: 2013-11-12
Classification: A01D

Abstract:
1. A ride-on mower having: driving motors; mower blades spinning for mowing grasses; mowing motors for the mower blades; batteries for the driving motors and the mowing motors; a mower deck for covering the mower blades from the above and sides and for setting the mowing motors on; a mower deck lifting device for lifting up and down the mower deck set at the center of the on the mower deck, the mower deck lifting device including a booster for assisting the mower deck lifting device to lift the mower deck up and down a rotatable lifting lever for lifting the mower deck up and down with the mower deck lifting device, the rotatable lifting lever includes lock plates that are displaceable and at least one coil spring that biases one of the lock plates downward; and guide plates installed at the side of the lifting lever, the guide plates being configured to set the mower deck at different heights, each of the guide plates having multiple notches, the guide plates being installed in parallel and at different levels, the guide plates being installed separately so that the notches of each guide plate cannot be matched with the notches of the other guide plates, wherein the at least one coil spring biases one of the lock plates to engage one of the notches to hold the position of the lifting lever while another of the lock plates does not engage any of the notches, and wherein the lock plates are able to reach the notches of all the guide plates.