US3947642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone answering system and apparatus
Assignee: B S R USA Ltd
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Filing: 1974-08-26
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Granted: 1976-03-30
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Expires: 1994-08-26
Abstract
Abstract A telephone answering device which uses a magnetic recording tape to play back previously recorded messages and to record the caller's message. The device is switched into the record mode by a prerecorded tone on the magnetic recording tape.
Inventors
- 👤 George M. Meyerle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:22
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65; H04M1/6515
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
230 words
A telephone answering device which connects to the telephone line and uses partially prerecorded magnetic recording tape comprising a tape transport mechanism having a magnetic record-playback head and an electric drive motor for moving the magnetic recording tape in a controlled manner across said record-playback head; a motor control circuit for operating said tape transport motor; a record-playback amplifier which in its playback state amplifies an electrical signal from said record-playback head and applies the amplified signal to the telephone lines, in its record state amplifies an electrical signal from the telephone lines and applies the amplified signal to said record-playback head; a record sensor for sensing a record control signal prerecorded on the recording tape to control the state of the record-playback amplifier; and a ring sensor for energizing said motor control and said record sensor when a ring signal is sensed, wherein when a ring signal is sensed, said motor control circuit is energized for moving the magnetic recording tape across said record-playback head and said record sensor is energized, whereby when said record sensor does not sense a record control signal, said recordplayback amplifier is in its playback state and a recorded message is applied to the telephone lines and when a record control signal is sensed, said record-playback amplifier is in its record state and a message from the telephone lines is recorded on the tape.
Claim 2
Dependent Claim
230 words
A telephone answering device which connects to the telephone line and uses partially prerecorded magnetic recording tape comprising a tape transport mechanism having a magnetic record-playback head and an electric drive motor for moving the magnetic recording tape in a controlled manner across said record-playback head; a motor control circuit for operating said tape transport motor; a record-playback amplifier which in its playback state amplifies an electrical signal from said record-playback head and applies the amplified signal to the telephone lines, in its record state amplifies an electrical signal from the telephone lines and applies the amplified signal to said record-playback head; a record sensor for sensing a record control signal prerecorded on the recording tape to control the state of the record-playback amplifier; and a ring sensor for energizing said motor control and said record sensor when a ring signal is sensed, wherein when a ring signal is sensed, said motor control circuit is energized for moving the magnetic recording tape across said record-playback head and said record sensor is energized, whereby when said record sensor does not sense a record control signal, said recordplayback amplifier is in its playback state and a recorded message is applied to the telephone lines and when a record control signal is sensed, said record-playback amplifier is in its record state and a message from the telephone lines is recorded on the tape.
Claim 3
Dependent Claim
41 words
The telephone answering device as claimed in claim 1 wherein said record sensor includes tone head mounted on said tape transport and wherein the magnetic recording tape has two tracks, one track for messages and one track for a record signal.
Claim 4
Dependent Claim
23 words
The telephone answering device as claimed in claim 2 wherein said record control signal is a tone recorded on the magnetic recording tape.
Claim 5
Dependent Claim
22 words
The telephone answering device as claimed in claim 1 wherein said record sensor may be manually disenabled for playback of recorded messages.
Claim 6
Dependent Claim
42 words
The telephone answering device as claimed in claim 2 wherein said record sensor may be manually enabled without sensing a record signal wherein a message may be recorded anywhere along the length of the magnetic recording tape on the track for messages.
Claim 7
Dependent Claim
27 words
The telephone answering device as claimed in claim 1 including a microphone wherein said microphone may be used to record a message on said magnetic recording tape.
Claim 8
Dependent Claim
29 words
The telephone answering device as claimed in claim 1 wherein said tape transport mechanism has fast forward and rewind operating modes for rapid movement of the magnetic recording tape.
Claim 9
Dependent Claim
26 words
The telephone answering device as claimed in claim 1 wherein said record-playback amplifier includes an equalization network for proper equalization during the record and playback states.
Claim 10
Dependent Claim
22 words
The telephone answering device as claimed in claim 1 including an automatic gain control to prevent overloading during recording of a message.
Claim 11
Dependent Claim
43 words
The telephone answering device as claimed in claim 1 wherein said motor control circuit may be manually enabled for the playback or recording of messages and when said motor control circuit is manually enabled, the answering device is disconnected from the telephone line.
Claim 12
Dependent Claim
21 words
The telephone answering device as claimed in claim 1 wherein a beep tone signal is derived from the record control signal.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |