GB1341465A – Ac track circuit apparatus for continuous rail track
– Google Patents
GB1341465A – Ac track circuit apparatus for continuous rail track
– Google Patents
Ac track circuit apparatus for continuous rail track
Info
Publication number
GB1341465A
GB1341465A
GB1309971*[A
GB1309971A
GB1341465A
GB 1341465 A
GB1341465 A
GB 1341465A
GB 1309971 A
GB1309971 A
GB 1309971A
GB 1341465 A
GB1341465 A
GB 1341465A
Authority
GB
United Kingdom
Prior art keywords
circuit
track
receiver
transmitter
output
Prior art date
1970-05-04
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1309971*[A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPX Corp
Original Assignee
General Signal Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1970-05-04
Filing date
1971-05-04
Publication date
1973-12-19
1971-05-04
Application filed by General Signal Corp
filed
Critical
General Signal Corp
1973-12-19
Publication of GB1341465A
publication
Critical
patent/GB1341465A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B61—RAILWAYS
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
B61L1/18—Railway track circuits
B61L1/181—Details
B61L1/187—Use of alternating current
Abstract
1341465 AC track circuit GENERAL SIGNAL CORP 4 May 1971 [4 May 1970] 13099/71 Heading B7N In a continuous rail alternating current track circuit with ends defined by track shunts ST, a transmitter and receiver are provided at each end of the circuit for detecting the presence of a vehicle in an end zone of the circuit and at least one other receiver is provided at an end zone responsive to the transmitter in the other end zone for detecting the presence of a vehicle in the mid zone of the circuit. A periodically operating test shunt is provided at each end zone circuit. The shunt 14 is periodically applied by a signal from pulse generator 13 whereby at each application the increase in output current from transmitter T 1 is detected by receiver R 1 which supplies an output to shift the frequency of oscillator 10 supplying the transmitter output. This periodic shift is detected by receiver R 1
GB1309971*[A
1970-05-04
1971-05-04
Ac track circuit apparatus for continuous rail track
Expired
GB1341465A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US3423770A
1970-05-04
1970-05-04
Publications (1)
Publication Number
Publication Date
GB1341465A
true
GB1341465A
(en)
1973-12-19
Family
ID=21875143
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1309971*[A
Expired
GB1341465A
(en)
1970-05-04
1971-05-04
Ac track circuit apparatus for continuous rail track
Country Status (6)
Country
Link
US
(1)
US3663809A
(en)
CA
(1)
CA933641A
(en)
DE
(1)
DE2121971A1
(en)
FR
(1)
FR2091201A5
(en)
GB
(1)
GB1341465A
(en)
NL
(1)
NL7106098A
(en)
Families Citing this family (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3951364A
(en)
*
1975-01-09
1976-04-20
General Signal Corporation
Track circuit
CS217737B1
(en)
*
1980-04-04
1983-01-28
Oldrich Poupe
Connection of the railway circuit with plural signalling sources
FR2486006A1
(en)
*
1980-07-07
1982-01-08
Jeumont Schneider
LOOP INDUCING A CURRENT IN THE TWO RAILS OF A RAILWAY
FR2490569A1
(en)
*
1980-09-22
1982-03-26
Signaux Entr Electriques
PERFECTION RAILWAY TRACK CIRCUIT
DE3534708A1
(en)
*
1985-09-28
1987-04-02
Ivv Ingenieurgesellschaft Fuer
TRACK CIRCUIT WITH OR WITHOUT INSULATION FOR RAILWAY SYSTEMS
GB2418051A
(en)
*
2004-09-09
2006-03-15
Westinghouse Brake & Signal
Backup system for detecting a vehicle which may not cause a track circuit to operate.
Family Cites Families (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR1036142A
(en)
*
1950-04-27
1953-09-03
Materiel Telephonique
Track circuit for rail transport safety system
1970
1970-05-04
US
US34237A
patent/US3663809A/en
not_active
Expired – Lifetime
1971
1971-04-01
CA
CA109376A
patent/CA933641A/en
not_active
Expired
1971-05-04
NL
NL7106098A
patent/NL7106098A/xx
unknown
1971-05-04
FR
FR7116088A
patent/FR2091201A5/fr
not_active
Expired
1971-05-04
DE
DE19712121971
patent/DE2121971A1/en
active
Pending
1971-05-04
GB
GB1309971*[A
patent/GB1341465A/en
not_active
Expired
Also Published As
Publication number
Publication date
US3663809A
(en)
1972-05-16
FR2091201A5
(en)
1972-01-14
DE2121971A1
(en)
1971-11-25
NL7106098A
(en)
1971-11-08
CA933641A
(en)
1973-09-11
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Legal Events
Date
Code
Title
Description
1974-05-01
PS
Patent sealed [section 19, patents act 1949]
1977-11-30
PLNP
Patent lapsed through nonpayment of renewal fees
