초록 ▼

A remote controlled carpet cleaner includes a rectangular outer support frame of structural steel. A gasoline engine drives a vacuum pump and through a pulley and belt assembly is also powers a liquid pump. The exhaust gas from the engine is directed to a heat exchanger which is used to heat water w

A remote controlled carpet cleaner includes a rectangular outer support frame of structural steel. A gasoline engine drives a vacuum pump and through a pulley and belt assembly is also powers a liquid pump. The exhaust gas from the engine is directed to a heat exchanger which is used to heat water which is pumped through the heat exchanger by the liquid pump. A liquid injector allows carpet cleaning chemicals to be mixed with the water as it enters the pump. The liquid injector is connected to a plurality of solenoid valves. Each solenoid valve is connected to a tank containing a carpet cleaning chemical. When a solenoid valve is opened, a specific carpet cleaning chemical in drawn into the liquid injector and mixed with the water entering the pump. The opening and closing of the solenoid valves is controlled by servo motors operated by a radio controlled receiver. The operator carries a belt mounted transmitter unit which transmits signals to the receiver to thereby direct the opening and closing of the solenoid valves and thus the carpet cleaning chemical to be dispensed. The transmitter unit includes a "lockout" feature to prevent the accidental dispensing of the wrong chemical. The remote controlled carpet cleaner offers a substantial increase in productivity by offering an operator the ability to remotely control and dispense required cleaning chemicals without making repeated trips between the cleaning site and a supply truck.

대표청구항 ▼

[ What is claimed is:] [6.] A method of operating a remote controlled carpet cleaner including a liquid pump driven by an engine to pump a liquid through a heat exchanger which receives exhaust gases from said engine to heat said liquid, a liquid injector attached to said liquid pump to inject clean

[ What is claimed is:] [6.] A method of operating a remote controlled carpet cleaner including a liquid pump driven by an engine to pump a liquid through a heat exchanger which receives exhaust gases from said engine to heat said liquid, a liquid injector attached to said liquid pump to inject cleaning chemicals supplied through solenoid valves, said solenoid valves controlled by a receiver in response to a signal generated by a transmitter carried by an operator, said method comprising the steps of:transmitting a signal from an operator carried transmitter to a receiver,receiving said signal from said operator carried transmitter to said receiver,operating a switch in response to a signal from said receiver,opening a solenoid valve in response to the operation of said switch, anddispensing a carpet cleaning chemical through said solenoid valve to said liquid injector.