초록 ▼

A powered lawn mower having a frame, an engine mounted to the frame, a set of front wheels and rear wheels connected to the frame, a drive for transmitting rotational power from the engine to the rear wheels, and grass cutting blades associated with the frame, and powered by the engine. A platform i

A powered lawn mower having a frame, an engine mounted to the frame, a set of front wheels and rear wheels connected to the frame, a drive for transmitting rotational power from the engine to the rear wheels, and grass cutting blades associated with the frame, and powered by the engine. A platform is positioned behind the rear wheels, and is capable of supporting an operator while the lawn mower is operating. The platform and the other parts are connected to the frame in such a way and positioned so that the addition of the operator in a stand-up or riding position moves the center of gravity by no more than twenty-five percent of the wheelbase of the mower. The rear wheel set may be positioned up or down but is not swingable. Alternatively, the platform and the other parts are connected to the frame in such a way and positioned so that the total weight of the mower is distributed no more than thirty-five percent on the front wheels with no operator on the platform, and the total weight of the mower is no less than twenty percent on the front wheels with an average operator riding on the platform.

대표청구항 ▼

[ We claim:] [1.] A powered lawn mower comprising:a frame;a prime mover mounted to the frame;at least one front wheel and at least one non-swingable rear wheel supporting the frame above the ground, the distance between the front and rear wheels constituting the wheelbase of the mower;means for tran

[ We claim:] [1.] A powered lawn mower comprising:a frame;a prime mover mounted to the frame;at least one front wheel and at least one non-swingable rear wheel supporting the frame above the ground, the distance between the front and rear wheels constituting the wheelbase of the mower;means for transmitting rotational power from the prime mover to at least one of the wheels;means for cutting grass associated with the frame, and powered by the prime mover;a platform, positioned above the ground behind the at least one rear wheel, capable of supporting the entire weight of an operator while the lawn mower is operating;the platform, the grass cutting means, the transmitting means, the wheels and the prime mover being connected to the frame in such a way and positioned so that the addition of the operator moves the center of gravity by no more than twenty-five percent of the wheelbase of the mower; andwherein the at least one rear wheel is mounted to the frame and rotatable about an axis, the axis being movable only in a vertical direction with respect to the frame.