US3585304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic emergency communication system
Assignee: Individual
•
Filing: 1969-05-16
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Granted: 1971-06-15
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Expires: 1989-05-16
Abstract
Abstract An automatic emergency communication system including a central control station connected with a plurality of subscriber stations through a conventional telephone system. Each of the subscriber stations includes an actuator responsive to a predetermined condition for energizing a tape deck to supply signals corresponding to the telephone number of the central control station to a telephone line and to supply a message to the telephone line, and circuitry responsive to control signals from the central control station to place the subscriber stations in a transmit mode whereby sounds at the subscriber stations are transmitted to the central control station and a receive mode whereby messages from the central control station are received by the subscriber stations.
Inventors
- 👤 Steven M Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:26
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/04; H04M11/045
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
260 words
An automatic emergency communication system of the type utilizing a telephone system to place a telephone call to a central control station from a subscriber station upon the occurrence of a predetermined condition, said central control station including a first telephone line connected with the telephone system, and control signal generating means connected with said first telephone line and supplying control signals for controlling apparatus at said subscriber to said first telephone line to be transmitted to said subscriber station through the telephone system, and said subscriber station including a second telephone line connected with the telephone system, recording means storing information signals corresponding to the telephone number of said central control station, first circuit means connected with said recording means and said second telephone line to supply said information signals to said second telephone line upon the occurrence of the predetermined condition, transducer means, second circuit means connecting said transducer means with said second telephone line, and control means connected with said second circuit means and said second telephone line to receive said control signals from said central control station, said control means being responsive to said control signals for placing said second circuit means in a first arrangement wherein said subscriber station is in a transmit mode of operation such that sounds may be picked up by said transducer and communicated to said central control station and in a second arrangement wherein said subscriber station is in a receive mode of operation such that messages from said central control station may be audibly reproduced by said transducer means.
Claim 2
Dependent Claim
260 words
An automatic emergency communication system of the type utilizing a telephone system to place a telephone call to a central control station from a subscriber station upon the occurrence of a predetermined condition, said central control station including a first telephone line connected with the telephone system, and control signal generating means connected with said first telephone line and supplying control signals for controlling apparatus at said subscriber to said first telephone line to be transmitted to said subscriber station through the telephone system, and said subscriber station including a second telephone line connected with the telephone system, recording means storing information signals corresponding to the telephone number of said central control station, first circuit means connected with said recording means and said second telephone line to supply said information signals to said second telephone line upon the occurrence of the predetermined condition, transducer means, second circuit means connecting said transducer means with said second telephone line, and control means connected with said second circuit means and said second telephone line to receive said control signals from said central control station, said control means being responsive to said control signals for placing said second circuit means in a first arrangement wherein said subscriber station is in a transmit mode of operation such that sounds may be picked up by said transducer and communicated to said central control station and in a second arrangement wherein said subscriber station is in a receive mode of operation such that messages from said central control station may be audibly reproduced by said transducer means.
Claim 3
Dependent Claim
65 words
The invention as recited in claim 1 wherein said information signals include signals corresponding to a message, and said recording means includes a tape having a first track and a second track, said information signals corresponding to a message being stored on said first track and said information signals corresponding to the telephone number of said central control station being stored on said second track.
Claim 4
Dependent Claim
67 words
The invention as recited in claim 2, wherein said first circuit means includes a read head for picking up said information signals corresponding to a message from said first track of said tape, amplifier means connected with said read head, and transformer means connected with said second telephone line and said amplifier means for supplying said information signals corresponding to a message to said first telephone line.
Claim 5
Dependent Claim
102 words
The invention as recited in claim 2 wherein said information signals corresponding to the telephone number of said central control station are stored as tones on said second track of said tape, and said first circuit means includes a read head for picking up said tones from said second track of said tape, detecting means connected with said read head, and first switch means connected with said detecting means and said first telephone line for detecting said tones and opening and closing said second telephone line in accordance with the telephone number of said central control station as represented by said tones.
Claim 6
Dependent Claim
64 words
The invention as recited in claim 2 wherein said tape has a start position and an end position, said information signals include a tone signal on said first track of said tape at said start position, and said information signals corresponding to the telephone number of said central control station are disposed between said tone signal and said information signals corresponding to a message.
Claim 7
Dependent Claim
36 words
The invention as recited in claim 5 wherein said information signals include a hangup signal on said second track of said tape at said end position whereby said hangup signal operates to disconnect said subscriber station.
Claim 8
Dependent Claim
21 words
The invention as recited in claim 6 wherein said tape is looped upon itself such that said information signals are repeated.
Claim 9
Dependent Claim
74 words
The invention as recited in claim 7 wherein said mode signals include an acknowledge signal, and said control means is connected with said recording means to interrupt operation of said recording means after an acknowledge signal is received such that said hangup signal disconnects said subscriber station if an acknowledge signal is nOt received and operation of said recording means repeats the call to said central control station until an acknowledge signal is received.
Claim 10
Dependent Claim
115 words
The invention as recited in claim 2 wherein said first circuit means includes a first read head for picking up said information signals corresponding to a message from said first track of said tape, amplifier means connected with said first read head, transformer means connected with said second telephone line and said amplifier means for supplying said information signals corresponding to a message to said second telephone line, a second read head for picking up said information signals corresponding to the telephone number of said central control station from said second track of said tape, and detecting means connected with said second read head and said second telephone line for calling said central control station.
Claim 11
Dependent Claim
39 words
The invention as recited in claim 2 wherein the automatic emergency communication system includes a plurality of subscriber stations identical to said subscriber station, and said information signals corresponding to a message include signals identifying the associated subscriber station.
Claim 12
Dependent Claim
71 words
The invention as recited in claim 1 wherein said control signals include transmit signals, and said control means includes signal responsive means actuated upon the receiving of said transmit signals at said subscriber station to place said second circuit means in said first arrangement wherein said subscriber station is in said transmit mode of operation and sounds may be detected at said subscriber station and transmitted to said central control station.
Claim 13
Dependent Claim
35 words
The invention as recited in claim 11 wherein said second circuit means is connected with said recording means to interrupt operation of said recording means when said transmit signals are received at said subscriber station.
Claim 14
Dependent Claim
79 words
The invention as recited in claim 12 wherein said information signals include signals corresponding to a message, said first circuit means includes amplifier means connected with said recording means and said second telephone line for supplying said information signals corresponding to a message to said second telephone line, and said second circuit means includes means connecting said transducer means to said second telephone line through said amplifier means when said subscriber station is in said transmit mode of operation.
Claim 15
Dependent Claim
69 words
The invention as recited in claim 1 wherein said control signals include receive signals, and said control means includes signal responsive means actuated upon the receiving of said receive signals at said subscriber station to place said second circuit means in said second arrangement wherein said subscriber station is in said receive mode of operation and messages from said central control station may be received by said subscriber station.
Claim 16
Dependent Claim
35 words
The invention as recited in claim 14 wherein said second circuit means is connected with said recording means to interrupt operation of said recording means when said receive signals are received at said subscriber station.
Claim 17
Dependent Claim
181 words
The invention as recited in claim 1 wherein said mode signals include transmit signals and receive signals, said control means includes first means responsive to said transmit signals and second means responsive to said receive signals, said second circuit means includes first relay means connected with said first means responsive to said transmit signals, said first relay means having a normally deenergized state and an energized state in response to receiving of said transmit signals, second relay means connected with said second means responsive to said receive signals, said second relay means having a normally deenergized state and an energized state in response to receiving of said receive signals, whereby said subscriber station is in said transmit mode of operation when said first relay means is in said energized state and said second relay means is in said deenergized state corresponding to said first arrangement anD said subscriber station is in said receive mode of operation when said first relay means is in said deenergized state and said second relay means is in said energized state corresponding to said second arrangement.
Claim 18
Dependent Claim
49 words
The invention as recited in claim 16 wherein said recording means is connected with said first relay means and said second relay means and the operation of said recording means is interrupted by either said first relay means or said second relay means being placed in its energized state.
Claim 19
Dependent Claim
79 words
The invention as recited in claim 16 wherein said first circuit means includes amplifier means for supplying said information signals corresponding to a message to said second telephone line, and said first relay means connects said transducer means with said amplifier means when said first relay means is in said energized state such that signals from said transducer means are amplified and supplied to said second telephone line when said subscriber station is in said transmit mode of operation.
Claim 20
Dependent Claim
85 words
The invention as recited in claim 18 wherein said amplifier means has an input connected with said second telephone line through said second relay means when said second relay means is in said energized state and an output connected with said transducer means through said second relay means when said second relay means is in said energized state such that signals from said central control station are amplified and supplied to said transducer means when said subscriber station is in said receive mode of operation.
Claim 21
Dependent Claim
15 words
The invention as recited in claim 19 wherein said transducer means includes a combination speaker-microphone.
Claim 22
Dependent Claim
121 words
The invention as recited in claim 16 wherein said first circuit includes condition responsive means including third relay means having a normally deenergized state and an energized state, said third relay means being latched in said energized state in response to the occurrence of the predetermined condition, said first relay means and said second relay means are connected with said first relay means such that said third relay means is placed in said deenergized state when said first relay means and said second relay means are simultaneously placed in said energized states whereby said third relay means may be returned to said normal deenergized state by simultaneous transmitting of said transmit signals and said receive signals from said central control station.
Claim 23
Dependent Claim
75 words
The invention as recited in claim 21 wherein said condition responsive means includes a pair of normally open contacts which are closed in response to the occurrence of the predetermined condition to place said third relay means in said energized state, and said third relay means includes holding means for latching said third relay means in said energized state whereby momentary closing of said contacts is sufficient to initiate calling operation of said subscriber station.
Claim 24
Dependent Claim
41 words
The invention as recited in claim 22 wherein said holding means includes a current path through said first and second relay means, said current path being interrupted when said first and second relay means are simultaneously placed in said energized states.
Claim 25
Dependent Claim
40 words
The invention as recited in claim 23 wherein said third relay means includes a coil and a holding capacitor shunted across said coil whereby said third relay means remains in said energized state when said current path is interrupted momentarily.
Claim 26
Dependent Claim
148 words
The invention as recited in claim 21 wherein said first relay means includes first holding means for latching said first relay means in said energized state, and said second relay means includes second holding means for latching said second relay means in said energized state, said first holding means includes a first current path through said second relay means, and said second holding means includes a second current path through said first relay means whereby said subscriber station may be changed from said transmit mode of operation to said receive mode of operation by interrUption of said first current path and from said receive mode of operation to said transmit mode of operation by interruption of said second current path and whereby neither said first or second relay means is latched in said energized state when said first and second relays are simultaneously placed in said energized states.
Claim 27
Dependent Claim
27 words
The invention as recited in claim 16 wherein said control means includes resonant reed decoding means for recognizing said transmit signals and said receive signals by frequency.
Claim 28
Dependent Claim
24 words
The invention as recited in claim 16 wherein the automatic emergency communication system includes a plurality of subscriber stations identical to said subscriber station.
Claim 29
Dependent Claim
54 words
The invention as recited in claim 1 wherein said information signals include signals corresponding to a message, and said central control station includes a speaker, and third circuit means connecting said speaker with said first telephone line whereby said information signals corresponding to a message may be audibly reproduced at said central control station.
Claim 30
Dependent Claim
47 words
The invention as recited in claim 28 wherein said central control station includes telephone apparatus and a handset connected with said first telephone line, and said third circuit means includes first switch means actuated by said handset to disconnect said speaker when said handset is in use.
Claim 31
Dependent Claim
91 words
The invention as recited in claim 28 wherein said control signal generating means includes a first generator for generating transmit signals having a first frequency and a second generator for generating receive signals having a second frequency, and said control means at said subscriber station includes first frequency responsive means for detecting said first frequency transmit signals and placing said subscriber station in said transmit mode of operation, and second frequency responsive means for detecting said second frequency receive signals and placing said subscriber station in said receive mode of operation.
Claim 32
Dependent Claim
94 words
The invention as recited in claim 30 wherein said central control station includes first switch means connected with said first generator and said first telephone line, second switch means connected with said second generator and said first telephone line, transmit actuator means connected with said first switch means to actuate said first switch means and supply said first frequency transmit signals to said first telephone line, and receive actuator means connected with said second switch means to actuate said second switch means and supply said second frequency receive signals to said first telephone line.
Claim 33
Dependent Claim
77 words
The invention as recited in claim 31 wherein said central control station includes muting relay means connected with said first telephone line, said first switch means, said second switch means and said speaker, said muting relay means having a normally deenergized state and an energized state in response to actuation of either or both of said first and second switch means whereby said speaker is disconnected when said mode signals are supplied to said first telephone line.
Claim 34
Dependent Claim
63 words
The invention as recited in claim 1 wherein said central control station includes answering means connected with said first telephone line for automatically answering calls in response to a ringing signal from the telephone system, said answering means including first relay means for receiving the ringing signal from the telephone system to energize said first relay means in response to the ringing signal.
Claim 35
Dependent Claim
63 words
The invention as recited in claim 33 wherein said answering means includes holding relay means connected with said first relay means and said first telephone line, said holding relay means being placed in an energized state by energization of said first relay means to deenergize said first relay means and including latching means to latch said holding relay means in said energized state.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |