Patent US853720A successfully refreshed from Google Patents.
Patent US3865985A successfully refreshed from Google Patents.
US3865985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone control system having wakeup, message waiting, special message and fire alert modes
Assignee: Letot Inc
•
Filing: 1973-09-07
•
Granted: 1975-02-11
•
Expires: 1993-09-07
Abstract
Abstract A telephone control system for use with a telephone which is connected to a telephone substation and where the system has a plurality of audio message transmitting means and a plurality of calling signal means and including a telephone actuation means whereby a telephone may be disconnected from the substation and connected to one of the plurality of calling system means and audio communication means. A fire alert system for disconnecting a telephone from a substation or other audio message transmitting means regardless of whether the telephone is in use and connecting the telephone to an emergency audio transmission means.
Inventors
- 👤 Robert W Stankus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:17
CPC Classifications
H; H04; H04M; H04M11/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
272 words
A telephone message cOntrol system for use with at least one telephone connected to a telephone substation by telephone wires by way of a calling unit associated with each telephone and where each telephone has a manually operated switch which in one position is adapted to connect the telephone for audio communication and in a second position to connect the telephone to a calling signal means, said control system comprising: a. A first calling signal means for supplying a first pulsating calling signal, b. A first audio communication means for providing a first audio message, c. A second calling signal means for supplying a second pulsating calling signal, d. A second audio communication means for providing a second audio message, e. A first message actuation means, f. A second message actuation means, g. A message control circuit including: i. means for connecting said first calling signal means and said first audio transmission means to each said calling unit and disconnecting said second calling means and said second audio transmission means from each said calling unit when said first message actuation means is actuated, and ii. means for connecting said second calling signal means and said second audio transmission means to each said calling unit and disconnecting said first calling signal means and said first audio transmission means from each said calling unit when said second actuation means is actuated, and h. Telephone acutation means associated with each said telephone for selectively disconnecting the telephone wires from said substation and connecting said wires to a calling signal means and audio transmission means connected to the associated calling unit by the message control circuit.
Claim 2
Dependent Claim
272 words
A telephone message cOntrol system for use with at least one telephone connected to a telephone substation by telephone wires by way of a calling unit associated with each telephone and where each telephone has a manually operated switch which in one position is adapted to connect the telephone for audio communication and in a second position to connect the telephone to a calling signal means, said control system comprising: a. A first calling signal means for supplying a first pulsating calling signal, b. A first audio communication means for providing a first audio message, c. A second calling signal means for supplying a second pulsating calling signal, d. A second audio communication means for providing a second audio message, e. A first message actuation means, f. A second message actuation means, g. A message control circuit including: i. means for connecting said first calling signal means and said first audio transmission means to each said calling unit and disconnecting said second calling means and said second audio transmission means from each said calling unit when said first message actuation means is actuated, and ii. means for connecting said second calling signal means and said second audio transmission means to each said calling unit and disconnecting said first calling signal means and said first audio transmission means from each said calling unit when said second actuation means is actuated, and h. Telephone acutation means associated with each said telephone for selectively disconnecting the telephone wires from said substation and connecting said wires to a calling signal means and audio transmission means connected to the associated calling unit by the message control circuit.
Claim 3
Dependent Claim
31 words
A telephone message control system according to claim 1 wherein said message control circuit includes in addition message indicating means for indicating when each of said message actuation means is actuated.
Claim 4
Dependent Claim
33 words
A telephone message control system according to claim 2 having in addition first indicating means associated with each telephone to indicate when the telephone actuation means associated with each telephone has been actuated.
Claim 5
Dependent Claim
34 words
A telephone message control system according to claim 3 having in addition a second indicating means associated with each telephone to indicate when the telephone is in audio communication with an audio communication means.
Claim 6
Dependent Claim
43 words
A telephone message control system according to claim 1 having in addition busy control means associated with each telephone for preventing the telephone actuation means from disconnecting the telephone wires from the substation when the telephone is in audio communication with the substation.
Claim 7
Dependent Claim
99 words
A telephone message control system according to claim 5 having in addition a fire alert system comprising: i. A further audio communication means containing a fire alert message, j. A fire alert actuation means, and k. A fire alert circuit including a busy control override means for overriding each said busy control means to connect said further audio communication means to each said calling unit and for disconnecting said first and second audio communication means from each said calling unit and the telephone lines associated with each telephone from said substation when said fire alert actuation means is actuated.
Claim 8
Dependent Claim
45 words
A telephone message control system according to claim 1 wherein said first calling signal means supplies power at a first frequency and said second calling signal means supplies power at a second frequency whereby the loudness of the first and second calling signals is different.
Claim 9
Dependent Claim
31 words
A telephone message control system according to claim 1 wherein the first signal calling means produces a first pulsating signal having a different period of pulses than the second pulsating signal.
Claim 10
Dependent Claim
74 words
A telephone message control means according to claim 1 having in addition: i. A third audio communication means for providing a third audio mEssage, j. A third message actuation means, and wherein said message control circuit includes in addition means for connecting one of the first or second calling signal means to each calling unit and said third audio communication means to each said calling unit when said third message actuation means is actuated.
Claim 11
Dependent Claim
127 words
An emergency alert system for use with a telephone system having a substation, at least one telephone connected by telephone wires to said substation, at least one audio message communication means, and means for selectively disconnecting said telephone wires from said substation and connecting them to said audio message communication means; said alert system comprising an alert audio communication means, an alert actuation means, and alert circuit means including means for disconnecting said telephone wires from said substation and for connecting them to said alert communication means and for disconnecting said telephone wires from said audio message communication means when said telephone wires and connected to said audio message communication means and for connecting them to said alert communication means when said alert actuation means is actuated.
Claim 12
Dependent Claim
127 words
An emergency alert system for use with a telephone system having a substation, at least one telephone connected by telephone wires to said substation, at least one audio message communication means, and means for selectively disconnecting said telephone wires from said substation and connecting them to said audio message communication means; said alert system comprising an alert audio communication means, an alert actuation means, and alert circuit means including means for disconnecting said telephone wires from said substation and for connecting them to said alert communication means and for disconnecting said telephone wires from said audio message communication means when said telephone wires and connected to said audio message communication means and for connecting them to said alert communication means when said alert actuation means is actuated.
References Cited (Backward Citations)
US3519749A
Cited
US3643029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |