초록 ▼

A self-propelled gas engine-operated lawn mower adapted to be controlled by a remotely positioned operator holding a radio transmitter, which is capable of transmitting radio signals of differentiating characteristics. A radio receiver mounted on the lawn mower controls servomotors, which in turn op

A self-propelled gas engine-operated lawn mower adapted to be controlled by a remotely positioned operator holding a radio transmitter, which is capable of transmitting radio signals of differentiating characteristics. A radio receiver mounted on the lawn mower controls servomotors, which in turn operate microswitches and relays assembled therewith to selectively energize a plurality of reversible electric motors which are coupled mechanically with the steering wheel, traction wheels and the transmission between the latter and the main driving shaft of the engine. These motors control the steering, the speed of propulsion of the mower in both forward and reverse directions and the engagement and disengagement of the drive to the traction wheels to start and stop the mower at the will of the operator. The stopping of the mower is also enforced in the event the operator is incapacitated and unable to exert his will, thereby imposing a “dead-man\s control”to stop the travel of the mower in such a contingency. Additional refinements include the remote control of the throttle adjustment of the carburetor to control the engine speed, and the complete inactivation of the engine.

대표청구항 ▼

A remotely controlled engine-operated power lawn mower having a rotary cutting blade, comprising (a) a frame including a housing for said blade with actuating means therefor mounted at the top of said housing. (b) a pair of traction wheels with common drive means therefor at one end of said frame, a

A remotely controlled engine-operated power lawn mower having a rotary cutting blade, comprising (a) a frame including a housing for said blade with actuating means therefor mounted at the top of said housing. (b) a pair of traction wheels with common drive means therefor at one end of said frame, and a ground-engaging steering wheel in an adjustable vertical plane at the opposite end thereof, (c) transmission means extending between said actuating means and said traction wheels comprising a horizontally disposed drive shaft, with means for adjusting the rotary speed and direction thereof, (d) single clutch means between said drive shaft and traction wheels for selectively controlling the actuation of the latter, (e) reversible electric motors with mechanical connections from each for adjusting, respectively, the vertical plane of said steering wheel, the speed and direction of said drive shaft, and the operative and inoperative positions of said clutch means, and (f) electric circuit means mounted on said mower comprising a radio receiver, an energy source, servomotors, and relays adapted to be operated by radiant energy from a transmitter held by an operator at a remote point adapted to send signals of differentiating characteristics for selectively controlling said steering wheel, drive shaft and clutch means.