US3881062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Totalizer circuit for coin operated telephones
Assignee: QUADRUM SA DE CV A CORP OF MEXICO
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Filing: 1973-10-26
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Granted: 1975-04-29
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Expires: 1993-10-26
Abstract
Abstract An electronic totalizer circuit which permits a coin telephone to be programmed for any desired initial deposit rate, and with minor modification to be used on telephones that provide prepay, semi-postpay and emergency calling modes of operation. The circuit is intended as a conversion unit for coin operated telephones lacking totalizing capabilities.
Inventors
- 👤 Robert H Beeman
- 👤 Robert V Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:38
CPC Classifications
H; H04; H04M; H04M17/00; H04M17/02; H04M17/023
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
214 words
A coin operated telephone instrument adapted for connection to a telephone central office by means of a telephone line, including a transmitter, a receiver, a calling device, a coin detecting mechanism normally inhibiting conversation between said instrument and a selected subscriber station of the type requiring deposit of at least one coin in said telephone instrument equivalent in total value to a predetermined value, said coin Detecting mechanism operated in response to deposit of a first coin of any value to condition said instrument for conversation with said selected subscriber station, and a totalizer, said totalizer comprising: counting means electrically advanced once in response to deposit of each coin of a first value and electrically advanced twice in response to deposit of each coin of a second value, said counting means initially operated to generate a first output in response to a first advance and further operated to generate a second output in response to a predetermined number of additional advances; switching means connected to said counting means initially operated in response to said counting means first output to further inhibit conversation between said instrument and said selected telephone subscriber station, and further operated in response to said counting means second output to permit conversation between said instrument and said selected telephone subscriber station.
Claim 2
Dependent Claim
214 words
A coin operated telephone instrument adapted for connection to a telephone central office by means of a telephone line, including a transmitter, a receiver, a calling device, a coin detecting mechanism normally inhibiting conversation between said instrument and a selected subscriber station of the type requiring deposit of at least one coin in said telephone instrument equivalent in total value to a predetermined value, said coin Detecting mechanism operated in response to deposit of a first coin of any value to condition said instrument for conversation with said selected subscriber station, and a totalizer, said totalizer comprising: counting means electrically advanced once in response to deposit of each coin of a first value and electrically advanced twice in response to deposit of each coin of a second value, said counting means initially operated to generate a first output in response to a first advance and further operated to generate a second output in response to a predetermined number of additional advances; switching means connected to said counting means initially operated in response to said counting means first output to further inhibit conversation between said instrument and said selected telephone subscriber station, and further operated in response to said counting means second output to permit conversation between said instrument and said selected telephone subscriber station.
Claim 3
Dependent Claim
23 words
A coin operated telephone instrument as claimed in claim 1 wherein: said counting means further operation inhibits further advance of said counting means.
Claim 4
Dependent Claim
64 words
A coin operated telephone instrument as claimed in claim 1 wherein: said counting means comprise a decimal counter and logic circuitry, said logic circuitry operated in response to deposit of a coin of a first value to generate a single output pulse to advance said counter once, and in response to deposit of a coin of a second value to advance said counter twice.
Claim 5
Dependent Claim
17 words
A coin operated telephone instrument as claimed in claim 1 wherein: said switching means comprise a relay.
Claim 6
Dependent Claim
56 words
A coin operated telephone instrument as claimed in caim 1 wherein: said coin detecting mechanism is operated in response to deposit of a first coin of any value to prepare an operating circuit for said instrument, said switching means initial operation opening said operating circuit, and said switching means further operation completing said prepared operating circuit.
Claim 7
Dependent Claim
35 words
A coin operated telephone instrument as claimed in claim 5 wherein: there is further included reset means included in said operating circuit, operated in response to said operating circuit completion, to reset said counting means.
Claim 8
Dependent Claim
70 words
A coin operated telephone instrument as claimed in claim 1 wherein: said coin detecting mechanism initially completes a first shunt circuit around said calling device, and in response to deposit of a first coin of any value opens said first shunt circuit; said switching means initial operation completing a second shunt circuit around said calling device and said switching means further operation removing said second shunt from said calling device.
Claim 9
Dependent Claim
112 words
A coin operated telephone instrument as claimed in claim 1 wherein: said coin detecting mechanism is initially operated in response to connection of said instrument to a selected subscriber station of the type requiring deposit of at least one coin in said telephone instrument equivalent in total value to a predetermined value, to complete a first shunt circuit around said transmitter; said switching means initial operation preparing a second shunt circuit around said transmitter and around said receiver; said coin detecting mechanism further operated in response to deposit of a first coin of any value, to complete said second shunt circuit; and said switching means further operation removing said second shunt circuit.
Claim 10
Dependent Claim
49 words
A coin operated telephone instrument as claimed in claim 8 wherein: there is further included reset means comprising a circuit connection between said counting means and said telephone line, said reset means operated in response to connection of said instrument to said central office, to reset said counting means.
References Cited (Backward Citations)
US3279480A
Cited
US3307671A
Cited
US3703229A
Cited
US3668290A
Cited
US3814907A
Cited
US3760101A
Cited
US3806651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |