Radio alarm system

• US 4,864,277 A
• Filed: 02/24/1984
• Issued: 09/05/1989
• Est. Priority Date: 02/24/1984
• Status: Expired due to Fees

• Current Assignee: David J. Goodman
• Original Assignee: David J. Goodman
• Inventors: Goodman, David J.
• Primary Examiner(s): Crosland, Donnie L.
• Application Number:
  US06/583,396
• Time in Patent Office: 2,020 Days
• Field of Search: 340/539, 340/531, 340/532, 455/91, 455/95, 455/96, 455/97, 455/98, 455/99, 455/128, 42/1 Z, 42/1.01, 42/1.15
• US Class Current: 340/539.1
• CPC Class Codes: G08B 25/10 using wireless transmission systems G08B25/009 takes precedence

Abstract

An alarm system, particularly a radio transmitter alarm system in which an alarm condition causes the propulsion of an alerting radio transmitter to a high altitude, thereby significantly increasing the reliable working distance between a protected location and a staffed, alarm-receiving point.

Claims

1. An alarm system for identifying the existence of an alarm condition at a remote site proximate to earth'"'"'s surface, comprising:

(a) radio transmitter means at said remote site adapted to transmit a high frequency coded signal at a frequency licensed by the FCC for alarm purposes or a low power coded signal at a frequency made available by the FCC for alarm purposes without license, said signal identifying the existence of said alarm condition;

(b) radio receiver means at a second site adapted to receive said signal;

(c) electrical power means effective only to energize said radio transmitter means for a short duration;

(d) antenna means connected to said transmitter means having an antenna length effective for said transmission;

(e) housing means housing said transmitter means, power means and antenna means;

(f) actuatable rocket or charge propulsion means at said remote site adapted to propel said housing means from a position proximate to earth'"'"'s surface to a peak elevation effective for line-of-sight licensed alarm or low powered non-licensed radio transmission to said second site, said short duration of transmission being defined as a period less than that during which said housing means is airborne; and

(g) means at said remote site proximate to earth'"'"'s surface responsive to an alarm condition to activate said propulsion means.

2. The alarm system of claim 1 including means to slow the descent of said housing means from said peak altitude.

3. The alarm system of claim 1 wherein said radio transmitter means is adapted to transmit a signal of very high frequency or ultra high frequency, said antenna means having an antenna length which is mathematically related to the wavelength.

4. The alarm system of claim 1 wherein said housing means is a rocket and said propulsion means is a rocket launcher.

5. The alarm system of claim 2 wherein said means to slow the descent of the housing means is a parachute.

6. The system of claim 1 wherein said transmitter is adapted to transmit a signal at a frequency licensed by the Federal Communications Commission.

7. The system of claim 1 wherein said transmitter is adapted to transmit a signal in compliance with regulations of the Federal Communications Commission regarding unlicensed transmission.