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U.S. Department of Energy
Office of Scientific and Technical Information

Mobile machine hazardous working zone warning system

Patent ·
OSTI ID:872459
A warning system is provided for a mobile working machine to alert an individual of a potentially dangerous condition in the event the individual strays into a hazardous working zone of the machine. The warning system includes a transmitter mounted on the machine and operable to generate a uniform magnetic field projecting beyond an outer periphery of the machine in defining a hazardous working zone around the machine during operation thereof. A receiver, carried by the individual and activated by the magnetic field, provides an alarm signal to alert the individual when he enters the hazardous working zone of the machine.
Research Organization:
Pittsburgh Energy Technology Center
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 5939986
OSTI ID:
872459
Country of Publication:
United States
Language:
English