Patent US3761632A successfully refreshed from Google Patents.
US3761632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic telephone alarm system responsive to answering of the called telephone
Assignee: General Alarm Corp
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Filing: 1971-12-15
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Granted: 1973-09-25
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Expires: 1991-12-15
Abstract
Abstract An automatic telephoning system such as for broadcasting fire or burglary messages to preselected telephones and responsive to the interruption of the regular sequence of ringback signals following dialing of a telephone number to sense the answering of the called telephone and to begin the playout of a prerecorded message.
Inventors
- 👤 R Colman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:42
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/04; H04M11/045; Y; Y10; Y10S; Y10S379/00; Y10S379/904
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
In a system for automatically placing telephone calls, the combination of dialing means operative to dial a called station, message means operative to transmit a recorded message over a telephone line to the called station, a ringback signal monitor connected to said telephone line and responsive to each of several successive ringback signals which occur on said line following operation of said dialing means, said ringback signal monitor including timer means connected to be reset by each ringback signal to separately measure each of the durations between the successive ringback signals and to produce an output signal when any of said durations exceeds a predetermined amount, and means responsive to said output signal to cause said message means to begin playout of said recorded message whereby said message is heard from its beginning at the called station whenever the called station answers.
Claim 2
Dependent Claim
142 words
In a system for automatically placing telephone calls, the combination of dialing means operative to dial a called station, message means operative to transmit a recorded message over a telephone line to the called station, a ringback signal monitor connected to said telephone line and responsive to each of several successive ringback signals which occur on said line following operation of said dialing means, said ringback signal monitor including timer means connected to be reset by each ringback signal to separately measure each of the durations between the successive ringback signals and to produce an output signal when any of said durations exceeds a predetermined amount, and means responsive to said output signal to cause said message means to begin playout of said recorded message whereby said message is heard from its beginning at the called station whenever the called station answers.
Claim 3
Dependent Claim
68 words
In a system according to claim 1, wherein said system further includes a second timer resettable in response to completion of operation of said dialing means, means for initiating further operation of said dialing means in response to a predetermined output from said second timer and means for disabling said second timer in response to outputs from said ringback signal monitor which initiate operation of said message means.
Claim 4
Dependent Claim
41 words
In a system according to claim 1, further including means for initiating further operation of said dialing means in the absence of message means playout after a predetermined length of time following completion of a preceding operation of said dialing means.
Claim 5
Dependent Claim
33 words
In a system according to claim 3, wherein said means for initiating further operation of said dialing means comprises a timer and means for resetting said timer upon completion of each dialing operation.
Claim 6
Dependent Claim
27 words
In a system according to claim 1, wherein said timer means is set to a given duration slightly greater than the interval between successive ringback signal occurrences.
Claim 7
Dependent Claim
127 words
In a system for automatically placing telephone calls, the combination of dialing means operative to dial a series of telephone numbers over telephone lines according to a selected sequence, message broadcast means operative to broadcast a message over said telephone lines, a first timer operative after a first predetermined duration following resetting to initiate operation of said message broadcast means, a second timer operative after a second, longer, predetermined duration following resetting to initiate operation of said dialing means to dial a subsequent number in said sequence, means operative to reset said first timer in response to the occurrence of ringback signals on said telephone lines and means operative to reset said second timer upon completion of the dialing of a telephone number by said dialing means.
Claim 8
Dependent Claim
127 words
In a system for automatically placing telephone calls, the combination of dialing means operative to dial a series of telephone numbers over telephone lines according to a selected sequence, message broadcast means operative to broadcast a message over said telephone lines, a first timer operative after a first predetermined duration following resetting to initiate operation of said message broadcast means, a second timer operative after a second, longer, predetermined duration following resetting to initiate operation of said dialing means to dial a subsequent number in said sequence, means operative to reset said first timer in response to the occurrence of ringback signals on said telephone lines and means operative to reset said second timer upon completion of the dialing of a telephone number by said dialing means.
Claim 9
Dependent Claim
27 words
In a system according to claim 6, further including means operative to disable operation of said message broadcast means in response to outputs from said second timer.
Claim 10
Dependent Claim
24 words
In a system according to claim 6, further inclUding means operative to disable said second timer in response to outputs from said first timer.
Claim 11
Dependent Claim
43 words
In a system according to claim 6, further including means operative to disable operation of said message broadcast means in response to outputs from said second timer and means operative to disable said second timer in response to outputs from said first timer.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |