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US3746857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal receiving apparatus for a vehicle control system
Assignee: Bombardier Transportation Holdings USA Inc
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Filing: 1971-05-28
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Granted: 1973-07-17
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Expires: 1991-05-28
Abstract
Abstract A signal receiving embodiment which is operative in a vehicle control system includes a conductive track with a pair of conductive continuous rails. At least one conductive member is connected between the rails, and a plurality of signals are present in the rails, only one signal of which is desired to be sensed. The signal receiving embodiment includes at least one signal receiving means which is aligned in a predetermined position relative to the rails such that potentials induced in the signal receiving means by the desired signal are in a series aiding relationship whereas there is no potential induced by the undesired signals or if signal potential is induced by the undesired signals, the induced signal potential is in a series opposing relationship relative to the signal receiving means.
Inventors
- 👤 R Hoyler
- 👤 B Slattery
- 👤 Booth G Thorne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:16
CPC Classifications
B; B61; B61L; B61L1/00; B61L1/18; B61L1/181; B61L1/187
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
213 words
In a signalling system operative with a conductive track, including a pair of conductive rails, and a plurality of conductive members connected between said rails at predetermined locations, with the section of track between and including two such conductive members forming a track circuit signalling block, the combination comprising: signal transmitting means located adjacent the conductive member forming one end of a given track circuit signallinG block for inducing into said rails a local signal to be sensed in an adjacent track circuit signalling block; means for inducing a desired signal into said rails to be sensed in said given track circuit signalling block; and signal receiving means, including at least first and second signal receiving antennas being positioned on opposite sides and opposite ends respectively of said conductive member forming one end of said given track circuit signalling block, said first and second signal receiving antennas being aligned substantially parallel to one another with respect to a reference plane, and being connected to one another in series such that the signal induced into said first and second signal receiving antennas by said local signal is in a series opposing relationship, and the signal induced into said first and second signal receiving antennas by said desired signal is in a series aiding relationship.
Claim 2
Dependent Claim
213 words
In a signalling system operative with a conductive track, including a pair of conductive rails, and a plurality of conductive members connected between said rails at predetermined locations, with the section of track between and including two such conductive members forming a track circuit signalling block, the combination comprising: signal transmitting means located adjacent the conductive member forming one end of a given track circuit signallinG block for inducing into said rails a local signal to be sensed in an adjacent track circuit signalling block; means for inducing a desired signal into said rails to be sensed in said given track circuit signalling block; and signal receiving means, including at least first and second signal receiving antennas being positioned on opposite sides and opposite ends respectively of said conductive member forming one end of said given track circuit signalling block, said first and second signal receiving antennas being aligned substantially parallel to one another with respect to a reference plane, and being connected to one another in series such that the signal induced into said first and second signal receiving antennas by said local signal is in a series opposing relationship, and the signal induced into said first and second signal receiving antennas by said desired signal is in a series aiding relationship.
Claim 3
Dependent Claim
86 words
The combination claimed in claim 1, wherein said first and second signal receiving antennas comprise first and second coils, respectively, with each coil having first and second terminals, with the second terminal of the first coil being connected to the first terminal of the second coil; and said signal receiving means further including a signal receiver having two terminals, with one terminal being connected to the first terminal of the first coil, and the remaining terminal being connected to the second terminal of the second coil.
Claim 4
Dependent Claim
253 words
In a signalling system operative with a conductive track, including a pair of conductive rails, and a plurality of conductive members connected between said rails at predetermined locations, with the section of track between and including two such conductive members forming a track circuit signalling block, the combination comprising: signal transmitting means located adjacent the conductive member forming one end of a given track circuit signalling block for inducing into said rails a local signal to be sensed in an adjacent track circuit signalling block; means for inducing a desired signal from an adjacent track circuit signalling block into said rails to be sensed in said given track circuit signalling block; first, second, third, and fourth coils, the first and second coils being mounted on opposite sides of one end of said conductive member forming one end of said given track circuit signalling block and being aligned substantially parallel with one another with respect to a reference plane, with said third and fourth coils being mounted on opposite sides of the other end of said conductive member and being aligned substantially parallel to one another with respect to a reference plane, said coils being connected in series such that the signal induced into said coils by said local signal is in a series opposing relationship, and the signal induced into said coils by said desired signal is in a series aiding relationship; and a signal receiver operative with said first, second, third, and fourth coils for sensing the signal induced in said coils.
Claim 5
Dependent Claim
253 words
In a signalling system operative with a conductive track, including a pair of conductive rails, and a plurality of conductive members connected between said rails at predetermined locations, with the section of track between and including two such conductive members forming a track circuit signalling block, the combination comprising: signal transmitting means located adjacent the conductive member forming one end of a given track circuit signalling block for inducing into said rails a local signal to be sensed in an adjacent track circuit signalling block; means for inducing a desired signal from an adjacent track circuit signalling block into said rails to be sensed in said given track circuit signalling block; first, second, third, and fourth coils, the first and second coils being mounted on opposite sides of one end of said conductive member forming one end of said given track circuit signalling block and being aligned substantially parallel with one another with respect to a reference plane, with said third and fourth coils being mounted on opposite sides of the other end of said conductive member and being aligned substantially parallel to one another with respect to a reference plane, said coils being connected in series such that the signal induced into said coils by said local signal is in a series opposing relationship, and the signal induced into said coils by said desired signal is in a series aiding relationship; and a signal receiver operative with said first, second, third, and fourth coils for sensing the signal induced in said coils.
Claim 6
Dependent Claim
220 words
In a signalling system operative with a conductive track, including a pair of conductive rails, and a plurality of conductive members connected between said rails at predetermined locations, with the section of track between and including two such conductive members forming a track circuit signalling block, the combination comprising: signal transmitting means located adjacent the conductive member forming one end of a given track circuit signalling block for inducing into said rails a local signal to be sensed in an adjacent track circuit signalling block; means for inducing a desired signal from an adjacent track circuit signalling block into said rails to be sensed in said given track circuit signalling block; at least first and second coils, the first and second coils being mounted on one rail on opposite sides of said conductive member forming one end of a given track circuit signalling block and being aligned substantiaLly parallel to one another with respect to a reference plane, said coils being connected in series such that the signal induced into said coils by said local signal is in a series opposing relationship, and the signal induced into said coils by said desired signal is in a series aiding relationship; and a signal receiver operative with said at least first and second coils for sensing the signals induced in said coils.
Claim 7
Dependent Claim
220 words
In a signalling system operative with a conductive track, including a pair of conductive rails, and a plurality of conductive members connected between said rails at predetermined locations, with the section of track between and including two such conductive members forming a track circuit signalling block, the combination comprising: signal transmitting means located adjacent the conductive member forming one end of a given track circuit signalling block for inducing into said rails a local signal to be sensed in an adjacent track circuit signalling block; means for inducing a desired signal from an adjacent track circuit signalling block into said rails to be sensed in said given track circuit signalling block; at least first and second coils, the first and second coils being mounted on one rail on opposite sides of said conductive member forming one end of a given track circuit signalling block and being aligned substantiaLly parallel to one another with respect to a reference plane, said coils being connected in series such that the signal induced into said coils by said local signal is in a series opposing relationship, and the signal induced into said coils by said desired signal is in a series aiding relationship; and a signal receiver operative with said at least first and second coils for sensing the signals induced in said coils.
Claim 8
Dependent Claim
87 words
The combination claimed in claim 4 including third and fourth coils mounted on the other rail on opposite sides of said conductive member and being aligned substantially parallel to one another with respect to a reference plane, said third and fourth coils being connected in series with said first and second coils such taht the signal induced into said coils by said local signal is into a series opposing relationship and the signal induced into said coils by said desired signal is in a series aiding relationship.
References Cited (Backward Citations)
US3694751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |