Patent ID: 11952897
Assignee: J.H. FLETCHER & CO.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 12:
13. A system for remotely operating a machine, comprising:
a first emitter for emitting a first signal corresponding to a first zone adjacent to the machine;
a transmitter for receiving the first signal emitted by the first emitter, the transmitter being adapted for issuing commands for controlling the machine and also indicating the presence of the transmitter in the first zone;
a controller for controlling the machine based on control signals from the transmitter based on the presence of the transmitter in the first zone; and
a second emitter for emitting a second signal corresponding to a second zone adjacent to the machine;
wherein the controller is adapted for preventing a part movably attached to the machine from moving to or within the first zone when the transmitter is present in the first zone, and to allow said part to move outside the first zone.