초록 ▼

A lawn mower that is remotely controlled and self-propelled. The lawn mower is propelled by battery powered electric motors that drive a set of wheels that are fixed in relation to the frame. Steering is accomplished through a belt and pulley system generally aligned with the forwardly mounted steer

A lawn mower that is remotely controlled and self-propelled. The lawn mower is propelled by battery powered electric motors that drive a set of wheels that are fixed in relation to the frame. Steering is accomplished through a belt and pulley system generally aligned with the forwardly mounted steering wheels. A battery powered electric motor rotates a center pulley, that in turn rotates pulleys for positioning the steering wheels in relation to the frame. Direction and speed of the mower may be controlled with a two channel radio. Frustro-conical wheel projections may be provided to help cross uneven terrain. Cutting height adjusters for the wheels may also be provided.

대표청구항 ▼

A remotely controlled, self-propelled lawn mower comprising: (a) a frame; (b) means carried by said frame for cutting a lawn; (c) a radio transmitter with plural channels for transmitting signals, said signals directing movement of said lawn mower; (d) a radio receiver with plural channels carried b

A remotely controlled, self-propelled lawn mower comprising: (a) a frame; (b) means carried by said frame for cutting a lawn; (c) a radio transmitter with plural channels for transmitting signals, said signals directing movement of said lawn mower; (d) a radio receiver with plural channels carried by said frame for receiving the signals from said transmitter; (e) a first pair of ground engaging wheels carried by the forward portion of said frame, one each on stub axles, and selectively positioned with respect to said frame for steering said lawn mower; (f) a second pair of ground engaging wheels carried by the rear portion of said frame in a predetermined position with respect thereto for propelling said lawn mower; (g) first and second direct current electric motors, each for imparting forward and reverse rotary motion and variable velocity to one of said second pair of wheels; said motors being operatively connected to said receiver and responsive to signals received from said transmitter on a first one of said plural channels; (h) a third direct current electric motor for positioning said first pair of wheels with respect to said frame, said third motor being operatively connected to said receiver and responsive to signals received from said transmitter on a second one of said plural channels; (i) a battery for providing power to said three motors and to said receiver; (j) three pulley means connected by a belt, a first one of said three pulley means being carried by the forward portion of said frame between said first pair of wheels and operatively connected to said third motor, the second and third ones of said three pulley means being operatively connected to one each of said stub axles to control the position of said first pair of wheels relative to said frame, each of said stub axles having one of said first pair of wheels at one distal end and one of said second and third pulleys at the other distal end, and having a shape so that rotary motion of said one pulley effects circumferential movement of said one wheel about said one pulley, whereby movement of said belt responsive to said third motor effects the rotation of said second and third pulley means to steer the mower; and (k) four frustro-conical protectors, each carried by and projecting outwardly from one of said wheels, for inhibiting the loss by said lawn mower of four-point contact with the ground in the event of uneven terrain.