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US3757301A
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Single cable signaling system
Assignee: Eaton Corp
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Filing: 1971-06-17
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Granted: 1973-09-04
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Expires: 1991-06-17
Abstract
Abstract A single cable signaling system adapted for recognizing the activation of a remote station coupled to the cable in an asynchronous fashion. Each station includes a transmitter so that when it is activated it will transmit signals along the cable including signals identifying the station location or address signals. The stations may be implemented to be manually or automatically activated or activated by means of an electrical key system. Each station may also include priority circuit means for controlling in a timed relationship the transmission of signals from a plurality of stations in a time overlapping relationship. To prevent the loss of information resulting from the quick generation of activation signals, a station may include a memory for recording the signal and transmitting it at a time when the cable is free. All of the signals transmitted along the cable are recorded or printed out.
Inventors
- 👤 J Regan
- 👤 R Hedin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:58
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/01; G08B25/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
132 words
A single cable signaling system comprising a plurality of signaling stations each including individual means for generating a control signal for transmission to a central station, a single cable coupled to each of the signaling stations for transmitting the generated control signal from each of the signaling stations to a central station, and pRiority timing means for controlling the priority of transmission of control signals from said plurality of signaling stations when said plurality of signaling stations are simultaneously actuated, said priority timing means producing a different time delay at each of said plurality of stations with the length of said time delay at each of said plurality of stations establishing a time controlled sequence in which said control signals from said plurality of signaling stations are transmitted to said central station.
Claim 2
Dependent Claim
132 words
A single cable signaling system comprising a plurality of signaling stations each including individual means for generating a control signal for transmission to a central station, a single cable coupled to each of the signaling stations for transmitting the generated control signal from each of the signaling stations to a central station, and pRiority timing means for controlling the priority of transmission of control signals from said plurality of signaling stations when said plurality of signaling stations are simultaneously actuated, said priority timing means producing a different time delay at each of said plurality of stations with the length of said time delay at each of said plurality of stations establishing a time controlled sequence in which said control signals from said plurality of signaling stations are transmitted to said central station.
Claim 3
Dependent Claim
29 words
A single cable signaling system as defined in claim 1 wherein said control signal generated at each of said signaling stations is a signal for identifying the signaling stations.
Claim 4
Dependent Claim
139 words
A single cable signaling system comprising a plurality of signaling stations each including individual means for generating signals for transmission to a central station, a single cable coupled to each of the signaling stations for transmitting the generated signals to a central station, priority timing means producing a time delay at each station for establishing a time controlled sequence in which a plurality of signal generating means actuated at substantially the same time transmit their respective generated signals in an order determined by the length of the time delay produced at each station, said individual signal generating means generating signals for identifying the signaling stations, and at least one of the stations including key means for manually actuating the signal generating means and for generating unique key means user identification information for coupling to the cable for transmission thereby.
Claim 5
Dependent Claim
139 words
A single cable signaling system comprising a plurality of signaling stations each including individual means for generating signals for transmission to a central station, a single cable coupled to each of the signaling stations for transmitting the generated signals to a central station, priority timing means producing a time delay at each station for establishing a time controlled sequence in which a plurality of signal generating means actuated at substantially the same time transmit their respective generated signals in an order determined by the length of the time delay produced at each station, said individual signal generating means generating signals for identifying the signaling stations, and at least one of the stations including key means for manually actuating the signal generating means and for generating unique key means user identification information for coupling to the cable for transmission thereby.
Claim 6
Dependent Claim
25 words
A single cable signaling system as defined in claim 3 wherein the central station includes means for printing out the signals transmitted along the cable.
Claim 7
Dependent Claim
84 words
A single calbe signaling system as defined in claim 3 wherein each of the individual signal generating means includes means for transmitting a cable ''''in use'''' signal to each of the other stations during transmission to said central station to maintain the other stations in a non-transmitting condition to prevent the simultaneous transmission of signals along the cable and allow the signals of the other stations to be transmitted under the control of the priority timing means when the ''''in use'''' signal is terminated.
Claim 8
Dependent Claim
39 words
A single cable signaling system as defined in claim 5 wherein the individual signal generating means includes means coupled to be responsive to its own individual ''''in use'''' signal to prevent the termination of its own signal generating means.
Claim 9
Dependent Claim
74 words
A single cable signaling system as defined in claim 5 including means for operating the signal generating means and wherein at least one of the signaling stations include memory means connected to be responsive to means for actuating the signal generating means and recording the actuation of same to allow the signal generating means to be operative in response to the stored information in the memory means after the cable is free for transmission.
Claim 10
Dependent Claim
25 words
A single cable signaling system as defined in claim 7 including means for automatically resetting the memory means upon termination of the signal generating means.
Claim 11
Dependent Claim
18 words
A single cable signaling system as defined in claim 3 wherein the priority means comprises timing circuit means.
Claim 12
Dependent Claim
20 words
A single cable signaling system as defined in claim 9 wherein the timing circuit means comprises R-C timing circuit means.
Claim 13
Dependent Claim
145 words
A single cable signaling system comprising a plurality of signaling stations each including individual means for generating station identification signaling information and means for actuating the generating means, a single cable coupled to each of said signaling stations for transmitting the signaling information, recording means coupled to the cable for receiving and recording the signaling information transmitted thereto, said actuating means of at least one of the stations including key means for manually actUating the signal generating means upon activation of said one station by said key means, and wherein the key means of at least one station comprises a coded key having preselected control actuation recorded thereon for actuating the signal generating means and having unique key identification information recorded thereon, the unique key identification information being coupled to the cable for transmission to the recorder only when the station identification information is generated.
Claim 14
Dependent Claim
145 words
A single cable signaling system comprising a plurality of signaling stations each including individual means for generating station identification signaling information and means for actuating the generating means, a single cable coupled to each of said signaling stations for transmitting the signaling information, recording means coupled to the cable for receiving and recording the signaling information transmitted thereto, said actuating means of at least one of the stations including key means for manually actUating the signal generating means upon activation of said one station by said key means, and wherein the key means of at least one station comprises a coded key having preselected control actuation recorded thereon for actuating the signal generating means and having unique key identification information recorded thereon, the unique key identification information being coupled to the cable for transmission to the recorder only when the station identification information is generated.
Claim 15
Independent Claim
191 words
A method of monitoring a plurality of independent stations with a common recording station comprising coupling a single cable to a plurality of signal generating stations, transmitting the signals generated at each station to a common point along the cable, recording at the common point each of the signals transmitted along the cable, providing a different transmission time delay to each of the independent stations according to a predetermined priority established at each of said stations, controlling the transmission of the signals to be recorded in a preselected timing priority to allow a station that is transmitting to prevent transmission from the remaining stations and once the transmitting station has finished transmitting to allow the remaining stations that are actuated substantially simultaneously to transmit, and sequentially transmitting said signals from said remaining stations in accordance with the duration of the different transmission time delays provided at each station to allow the remaining signal generating stations each to transmit their respective signals at different times as determined by said different time delays to provide a predetermined sequence of transmission determined by the length of said time delays associated with said remaining stations.
Claim 16
Independent Claim
191 words
A method of monitoring a plurality of independent stations with a common recording station comprising coupling a single cable to a plurality of signal generating stations, transmitting the signals generated at each station to a common point along the cable, recording at the common point each of the signals transmitted along the cable, providing a different transmission time delay to each of the independent stations according to a predetermined priority established at each of said stations, controlling the transmission of the signals to be recorded in a preselected timing priority to allow a station that is transmitting to prevent transmission from the remaining stations and once the transmitting station has finished transmitting to allow the remaining stations that are actuated substantially simultaneously to transmit, and sequentially transmitting said signals from said remaining stations in accordance with the duration of the different transmission time delays provided at each station to allow the remaining signal generating stations each to transmit their respective signals at different times as determined by said different time delays to provide a predetermined sequence of transmission determined by the length of said time delays associated with said remaining stations.
Claim 17
Dependent Claim
62 words
A method of monitoring a plurality of independent stations as defined in claim 12 including storing a station actuating signal occurring while signals are transmitted along the cable for a time interval to allow any signals transmitted along the cable to be recorded and then releasing the stored signal at a time when the cable is free to transmit if for recording.
Claim 18
Dependent Claim
34 words
A method of monitoring a plurality of independent stations as defined in claim 12 including transmitting a signal by a station to itself to prevent the termination of its own signal along the cable.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |