US3592974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic dialing apparatus
Assignee: GV Controls Inc
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Filing: 1969-04-28
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Granted: 1971-07-13
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Expires: 1989-04-28
Abstract
Abstract The invention is addressed to a system comprising preprogrammable apparatus, having terminals through which energy may be supplied to that apparatus to energize it, effective when energized to generate a coded series of spaced signals, a telephone line, and circuit means for connecting the terminals across that line. With that system there are combined a normally nonconductive transistor whose collector-emitter path is serially included in the circuit means above mentioned, and a means controlled by said apparatus and effective upon the energization thereof and until the conclusion of the ensuing series of signals to supply current to the base-emitter path of the transistor during the signal-preceding intervals but to open the circuit means during the signals. Energization of the apparatus is initiated by means, independent of said apparatus, for supplying a temporary initial current from the telephone line to said baseemitter path.
Inventors
- 👤 Donald V Dimassimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:36
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274; H04M1/2745; H04M1/27495
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
203 words
The combination, with a system comprising (a) preprogrammable apparatus, having a pair of terminals through which energy may be supplied to said apparatus to energize the same, effective when energized to generate a coded series of signals each preceded by a nonsignal interval, (b) means connected with said apparatus for causing an energization thereof, once effected, to persist for at least the duration oF a signal, (c) a telephone line, and (d) circuit means for connecting said terminals across the telephone line, of (1) a normally nonconductive transistor having emitter, base and collector electrodes, the collector-emitter path of said transistor being serially included in said circuit means between one of said terminals and one side of the telephone line, (2) means, connected with said circuit means and controlled by said apparatus, effective upon the energization of said apparatus and until the conclusion of the ensuing series of signals to supply current to the base-emitter path of said transistor during the intervals preceding those signals but to open said circuit means during those signals, and (3) means for initiating an energization of said apparatus, comprising means independent of said apparatus for supplying a temporary initial current from the telephone line to said base-emitter path.
Claim 2
Dependent Claim
203 words
The combination, with a system comprising (a) preprogrammable apparatus, having a pair of terminals through which energy may be supplied to said apparatus to energize the same, effective when energized to generate a coded series of signals each preceded by a nonsignal interval, (b) means connected with said apparatus for causing an energization thereof, once effected, to persist for at least the duration oF a signal, (c) a telephone line, and (d) circuit means for connecting said terminals across the telephone line, of (1) a normally nonconductive transistor having emitter, base and collector electrodes, the collector-emitter path of said transistor being serially included in said circuit means between one of said terminals and one side of the telephone line, (2) means, connected with said circuit means and controlled by said apparatus, effective upon the energization of said apparatus and until the conclusion of the ensuing series of signals to supply current to the base-emitter path of said transistor during the intervals preceding those signals but to open said circuit means during those signals, and (3) means for initiating an energization of said apparatus, comprising means independent of said apparatus for supplying a temporary initial current from the telephone line to said base-emitter path.
Claim 3
Dependent Claim
63 words
The subject matter claimed in claim 1 wherein said element identified as (2) comprises means, connected with said circuit means and controlled by said apparatus, effective upon the energization of said apparatus and until the conclusion of the ensuing series of signals to supply current to the base-emitter path of said transistor during the intervals preceding those signals but not during those signals.
Claim 4
Dependent Claim
64 words
The subject matter claimed in claim 1 further including a telephone station with which said system is associated and which includes a station network connected across said telephone line during communication from said station thereover, and means responsive to the operation of said element identified as (3) for disconnecting said station network from said telephone line until the conclusion of said series of signals.
Claim 5
Dependent Claim
65 words
The subject matter claimed in claim 1 further including a telephone station with which said system is associated and which during communication from said station loads said telephone line with a station network, and means responsive to the operation of said element identified as (3) for freeing said telephone line of station-network loading at least during the intervals preceding the signals of the ensuing series.
Claim 6
Dependent Claim
62 words
The subject matter claimed in claim 1 further including a telephone station with which said system is associated and which during communication from said station loads said telephone line with a station network, and means responsive to the operation of said element identified as (3) for freeing said telephone line of station-network loading until the conclusion of the ensuing series of signals.
Claim 7
Dependent Claim
68 words
The subject matter claimed in claim 1 further including a telephone station with which said system is associated and which during communication from said station loads said telephone line with a station network, and means responsive to the operation of said element identified as (3) for freeing said telephone line of station-network loading during the intervals preceding the signals of the ensuing series but not during those signals.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |