Silent alarm system and means for directing airborne personnel to emergency site

Claim 2

That improvement in an emergency alarm system for summoning assistance to the site of an emergency which comprises: utilizing sensor means on the site for detecting an emergency condition and in response to activation thereof completing a telephone circuit to a remote manned telephone station, and transmitting thereover via telephone a pre-recorded message respecting the nature of the emergency and the geographical location thereof.

Claim 3

That improvement defined in claim 1 characterized in the step of employing said sensor means to activate signal light means located for viewing by emergency personnel distant from the site and endeavoring to respond to the emergency alarm.

Claim 4

That improvement defined in claim 1 characterized in the step of including in the transmitted emergency message a bearing from each of two local direction finders which bearings intersect at said site.

Claim 5

That improvement defined in claim 3 characterized in the step of utilizing the activation of said sensor means to energize a powerful light source located on the site and distantly visible to supplement said intersecting bearing information in guiding airborne emergency personnel to the site of the emergency.

Claim 6

That improvement in directing public emergency personnel to the site of an emergency which comprises: storing information identifying a pair of direction finder vectors from separate direction finder stations local to a selected site and intersecting at that site, and transmitting to a remote station monitoring the area for emergency alarms the stored vector information automatically in response to the happening of an emergency at said site for the guidaNce of personnel endeavoring to locate and proceed to the site of the emergency.

Claim 7

That improvement in directing public emergency personnel to the site of an emergency which comprises: storing information identifying a pair of direction finder vectors from separate direction finder stations local to a selected site and intersecting at that site, and transmitting to a remote station monitoring the area for emergency alarms the stored vector information automatically in response to the happening of an emergency at said site for the guidaNce of personnel endeavoring to locate and proceed to the site of the emergency.

Claim 8

That improvement defined in claim 5 characterized in activating signal light means substantially contemporaneously with the transmission of the stored vector information and which signal light means is exposed to view to emergency personnel from a distance as they proceed toward the site.

Claim 9

That improvement defined in claim 5 characterized in the utilization of a helicopter by emergency personnel to proceed to the site of the emergency by the use of guidance signals transmitted to the helicopter from said direction finder stations.

Claim 10

That improvement defined in claim 5 characterized in the use of a public telephone system to transmit the stored direction finder information from the site of the emergency to public emergency personnel.

Claim 11

That improvement defined in claim 5 characterized in the use of magnetic tape to store said direction finder information, and silently introducing said tape-stored information into a telephone system and to emergency personnel via said telephone system.

Claim 12

That improvement defined in claim 9 characterized in dispatching airborne emergency personnel to the site of the emergency utilizing the transmitted direction finder information and signals from paid direction finder stations to guide said airborne personnel to the site.

Claim 13

That improvement defined in claim 10 characterized in operating intermittently flashing signal light means located at the emergency site and visible from the air as an aid in guiding emergency personnel to the site.

Claim 14

A silent alarm for transmitting a recorded message respecting the location of said silent alarm to a phone operator upon the occurrence of an emergency, said alarm comprising: a phone set having means thereon for signalling an operator, means for arming said operator signalling means, power operated recorder means having a recorded emergency message, motor-driven cycle control means including timer means operatively connected to said power-operated recorder means and operable to initiate and to terminate the operation of said recorder means, means operatively interconnecting said cycle control means and said means for arming said operator signalling means thereby to operate the latter in time delay sequence following the actuation of said cycle control means, and means including emergency condition sensor means for initiating operation of said cycle control means upon sensing an emergency condition and inaudibly to introduce said recorded message into a public telephone line following signalling of the operator via said operator signalling means on said phone set.

Claim 15

A silent alarm for transmitting a recorded message respecting the location of said silent alarm to a phone operator upon the occurrence of an emergency, said alarm comprising: a phone set having means thereon for signalling an operator, means for arming said operator signalling means, power operated recorder means having a recorded emergency message, motor-driven cycle control means including timer means operatively connected to said power-operated recorder means and operable to initiate and to terminate the operation of said recorder means, means operatively interconnecting said cycle control means and said means for arming said operator signalling means thereby to operate the latter in time delay sequence following the actuation of said cycle control means, and means including emergency condition sensor means for initiating operation of said cycle control means upon sensing an emergency condition and inaudibly to introduce said recorded message into a public telephone line following signalling of the operator via said operator signalling means on said phone set.

Claim 16

A silent alarm as defined in claim 12 characterized in the provision of manually settable solenoid-released means connected in circuit with said cycle control means and with said sensor means, and operable to energize said cycle control means when said sensor means senses an emergency condition.

Claim 17

A silent alarm as defined in claim 12 characterized in that said cycle control means includes spring-powered timer means for activating said operator signalling means in time-delay sequence following initiation of the operation of said cycle control means.

Claim 18

A silent alarm as defined in claim 12 characterized in the provision of flasher light means exposed to view from the exterior of the premises on which said alarm is located and connected to said alarm for activation thereby when an emergency is sensed by said sensor means.

Claim 19

A silent alarm as defined in claim 15 characterized in that said recorded message includes information identifying a pair of direction finder vectors from separate local direction finder stations and which vectors intersect at the site of the alarm thereby enabling airborne emergency officials to proceed to the site of the emergency.

Claim 20

An alarm system utilizing airborne direction finder apparatus for responding to an alarm emanating from a particular site, said system comprising: sensor means aT the site including means responsive to a sensed emergency to signal a phone operator over a public telephone system and to relay to that operator a recorded message including the site address and a pair of vectors from identified local direction finder stations intersecting at the alarm site and usable by airborne emergency personnel equipped with direction finder receiving apparatus to proceed directly to the alarm site.

Claim 21

An alarm system utilizing airborne direction finder apparatus for responding to an alarm emanating from a particular site, said system comprising: sensor means aT the site including means responsive to a sensed emergency to signal a phone operator over a public telephone system and to relay to that operator a recorded message including the site address and a pair of vectors from identified local direction finder stations intersecting at the alarm site and usable by airborne emergency personnel equipped with direction finder receiving apparatus to proceed directly to the alarm site.

Claim 22

An alarm system as defined in claim 17 characterized in that said phone operator signalling means includes cycle control means in circuit with said sensor means and energized in response to an emergency condition detected by said sensor means, and said cycle control means being operable when activated to introduce said recorded message inaudibly into a public telephone system for relay to airborne emergency personnel.