Patent US 5,337,041

A personal safety guard system enables a guardian or caretaker of a person or pet to transmit an alarm condition signal from a hand-held unit carried by the guardian. When the alarm condition signal is received by a portable alarm unit adapted to be worn by the person or pet under the guardian's supervision, the alarm unit operates to alert the wearer that its guardian is looking for them, and to alert others nearby that the wearer is in need of assistance by producing a number of different alarm indicators. The alarm indicators produced by the portable alarm unit include an intelligible voice message such as "Help, I'm lost" which is alternately sounded with a loud alarm sound, and flashing strobe lights. These alarm indicators, together with a confirmation signal transmitted from the alarm unit to the guardian's unit, enable the guardian to track and find their charge.