초록 ▼

A remote controlled car driven by an electric motor energized with a battery has an internal combustion engine sound simulator that transmits signals to one or more remote receivers having audio outputs that simulate an internal combustion engine driving the car. The engine sound simulating apparatu

A remote controlled car driven by an electric motor energized with a battery has an internal combustion engine sound simulator that transmits signals to one or more remote receivers having audio outputs that simulate an internal combustion engine driving the car. The engine sound simulating apparatus has a digital switch sensor responsive to the speed of rotation of the drive wheel of the vehicle for producing an output signal. A signal converting circuit receives the output signal from the digital switch sensor and provides a signal having a frequency that changes in response to ranges of speed of the car. A transmitter means connected to the signal converting circuit transmits the signals to the remote located receivers. The receivers have speakers for producing an audible output simulating the operation of an internal combustion engine.

대표청구항 ▼

An engine sound simulating apparatus for a vehicle having drive means powered by an electric motor to propel the vehicle in a desired path, said drive means having a rotatable member that rotates in direct proportion to the speed of the vehicle comprising: digital switch sensor means responsive to t

An engine sound simulating apparatus for a vehicle having drive means powered by an electric motor to propel the vehicle in a desired path, said drive means having a rotatable member that rotates in direct proportion to the speed of the vehicle comprising: digital switch sensor means responsive to the speed of rotation of the rotatable member for producing an output signal having a frequency proportional to the speed of the vehicle, signal converting means for receiving said output signal and converting said signal to a signal having a frequency that changes in response to ranges of speed of the vehicle, transmitter means connected to the signal converting means to transmit signals from the signal converting means, a plurality of receiver means located adjacent the path along which the vehicle is propelled for receiving the transmitted signals, said receiver means having speaker means providing an audio output simulating the operation of an engine powering the vehicle.