초록 ▼

A motor control circuit for controlling the operation of an electric lawnmower comprising an operator sensor responsive to the bridging of first and second operator contacts mounted on the lawnmower handle to provide a motor actuate signal and a power control circuit responsive to the motor actuate

A motor control circuit for controlling the operation of an electric lawnmower comprising an operator sensor responsive to the bridging of first and second operator contacts mounted on the lawnmower handle to provide a motor actuate signal and a power control circuit responsive to the motor actuate signal to connect the blade motor to a power source.

대표청구항 ▼

A circuit for controlling an electric lawnmower having an operating handle, a blade motor and a power source, the circuit comprising: an operator sensor comprising: a first operator contact mounted on the operating handle; a second operator contact mounted on the operating handle in spaced relations

A circuit for controlling an electric lawnmower having an operating handle, a blade motor and a power source, the circuit comprising: an operator sensor comprising: a first operator contact mounted on the operating handle; a second operator contact mounted on the operating handle in spaced relationship to the first operator contact, the first and second operator contacts being bridgeable via a human hand; signal generating means connected to the first operator contact, the signal generating means applying an operator sense signal having a predetermined frequency to the first operator contact; and, signal detecting means connected to the second operator contact, the signal detecting means receiving any signal coupled to the second operator contact via the bridging of the first and second operator contacts, and providing a motor actuate signal in response to receiving a signal having the predetermined frequency; and, power relay means connected to the power source, the blade motor and the signal detecting means, the power relay means receiving the motor actuate signal and connecting the power source to the blade motor in response to the received motor actuate signal.