US 7,042,360 · Granted 2006-05-09
Electronic tether for portable objects
A system and method for issuing an alarm when the separation distance between a monitoring module associated with an object (animate or inanimate) and an alert module exceeds a preset threshold distance thereby forming a leadless electronic tether between the object and the object owner. A monitoring module comprises a portable transmitter provides a signal to an alert module comprising a receiver and a processor. The alert module is adapted to determine a separation distance between the monitoring module and the alert module based on an attribute of the signal. When the separation distance exceeds a predetermined threshold, the alert module issues an alert.
Patent details
- Publication number
- US 7,042,360
- Filing date
- 2004-08-04
- Grant date
- 2006-05-09
- Assignee
- Light Elliott D / Brian Boesch / Roberts Jon L
- Inventor(s)
- LIGHT ELLIOTT D., BOESCH BRIAN, ROBERTS JON L.
- CPC class
- G08B21/0216
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