Patent ID: 8760289

Claim:
A warning system, for an item of equipment, comprising: a first transmitter; a first receiver and a first actuator and, for at least one person who is in a proximity of the item of equipment, a second transmitter; a second receiver and a second actuator, wherein the first transmitter is operated to emit a first signal and the second receiver, upon detecting the first signal, enables the second actuator to alert the person to the proximity of the item of equipment and enables the second transmitter to emit a second signal, and the first receiver, upon detecting the second signal, enables the first actuator to indicate the proximity of the person to the item of equipment; wherein the first signal and the second signal are audio signals, at least the first signal is audible to the person; and wherein the second actuator, when enabled, emits an alerting signal to alert the person to the proximity of the item of equipment, further wherein the alerting signal is at least one of a visual signal, an audible signal and a vibratory signal.