Portable cellular alert system

• US 5,892,447 A
• Filed: 12/06/1996
• Issued: 04/06/1999
• Est. Priority Date: 12/06/1996
• Status: Expired due to Fees

• Current Assignee: Milton E. Wilkinson
• Original Assignee: Milton E. Wilkinson
• Inventors: Wilkinson, Milton E.
• Primary Examiner(s): MULLEN, THOMAS J
• Application Number:
  US08/761,486
• Time in Patent Office: 851 Days
• Field of Search: 340/573.4, 340/574, 340/539, 340/541, 340/825.49, 340/514, 340/309.15, 340/691, 340/407.1, 379/37, 379/38, 379/45, 379/51, 455/67.7, 455/67.1, 455/566, 455/575, 455/100, 455/351, 342/118
• US Class Current: 340/573.4
• CPC Class Codes: G08B 21/0247 System arrangements wherein the alarm criteria uses signal strength
• CPC Class Codes: G08B 21/0286 Tampering or removal detection of the child unit from child or article

Abstract

The claimed invention comprises a personal warning system including a mobile transmitting device and a mobile receiving device including a receiver which receives signals transmitted by the transmitting device, a proximity device for providing a signal indicative of the proximity of the transmitting device and an alarm, communicating with the proximity device, for providing warning of the proximity of the transmitting device.

Claims

1. A personal warning system comprising:

a mobile transmitting device for transmitting electromagnetic signals;

a mobile transmission monitoring device for verifying transmission of signals by said transmitting device; and

a mobile receiving device comprising;

a receiver for receiving said electromagnetic signals transmitted by said transmitting device;

a proximity device for providing a signal indicative of the proximity of said transmitting device, said proximity device comprising an electromagnetic signal amplitude monitor;

an alarm, communicating with said proximity device, for providing a warning of the proximity of said transmitting device; and

a reset switch to terminate the alarm until proximity of said mobile transmitting device is detected again.

2. A personal warning system as in claim 1 wherein said mobile receiving device further comprises a cellular telephone for communicating with police or emergency personnel.

3. A personal warning system as in claim 1 wherein said mobile receiving device further comprises a switch that automatically activates a cellular telephone upon receipt of said signal from said proximity device.

4. A personal warning system as in claim 1 wherein said mobile receiving device further comprises an audible alarm or a vibrating alarm.

5. A personal warning system as in claim 4 wherein said mobile receiving device further comprises a switch to select said audible alarm or said vibrating alarm.

6. A personal warning system as in claim 1 wherein said mobile receiving device further comprises a battery charger for charging the battery of the receiving device while said mobile receiving device continues to monitor said electromagnetic signals transmitted by said transmitting device.

7. A personal warning system as in claim 1 further comprising a bracelet to attach a selection from the group consisting of said mobile transmitting device and said mobile transmission monitoring device to the limb of a human being.

8. A personal warning system as in claim 7 wherein said bracelet further comprises:

a wire embedded in said bracelet that attaches said selection to said limb;

electrical connections for generating an electrical current along said wire; and

a recorder for recording the date and time said wire is severed.

9. A personal warning system comprising:

a mobile transmitting device for transmitting electromagnetic signals;

a mobile transmission monitoring device for verifying transmission of signals by said transmitting device; and

a mobile receiving device comprising;

a receiver for receiving said electromagnetic signals transmitted by said mobile transmitting device;

a proximity device for providing a signal indicative of the proximity of said mobile transmitting device; and

a cellular telephone for communicating with police or emergency personnel;

said cellular telephone including a speaker volume control.

10. A personal warning system as in claim 9 further comprising an automatic dialer for dialing a pre-programmed telephone number.

11. A personal warning system as in claim 9 further comprising a bracelet to attach a selection from the group consisting of said mobile transmitting device and said mobile transmission monitoring device to the limb of a human being.

12. A personal warning system as in claim 11 wherein said bracelet further comprises:

a wire embedded in said bracelet that attaches said mobile transmitting device to said limb;

electrical connections for generating an electrical current along said wire; and

a recorder for recording the date and time said wire is broken or severed.

13. A mobile monitoring system comprising:

a mobile transmitting device to transmit an electormagnetic signal at a set frequency and over periodic intervals;

a bracelet to attach said mobile transmitting device to the limb of a human being;

a receiver for receiving said electromagnetic signals transmitted by said transmitting device;

a proximity device for providing a signal indicative of the proximity of said transmitting device;

an alarm, communicating with said proximity device, for providing a warning of the proximity of said transmitting device;

a mobile receiving device for receiving signals transmitted by said mobile transmitting device;

a bracelet to attach said mobile receiving device to the limb of a human being; and

a recorder for recording the data and time said mobile receiving device does not receive said electromagnetic signal transmitted by said mobile transmitting device.

14. A monitoring system in claim 13 wherein said mobile transmitting device further comprises:

a verification system comprising;

a wire embedded in said bracelet that attaches said mobile transmitting device to said limb;

electrical connections for generating an electrical current along said wire; and

a recorder for recording the date and time said wire is broken or severed.

15. A mobile monitoring system as in claim 13 wherein said receiving device further comprises:

a verification system comprising;

a wire embedded in said bracelet that attaches said receiver to said limb;

electrical connections for generating an electrical current along said wire; and

a recorder for recording the date and time said wire is broken or severed.