GB513409A - Improvements in or relating to electrical signalling systems - Google Patents

Improvements in or relating to electrical signalling systems

Info

Publication number
GB513409A
GB513409A GB2059039A GB2059039A GB513409A GB 513409 A GB513409 A GB 513409A GB 2059039 A GB2059039 A GB 2059039A GB 2059039 A GB2059039 A GB 2059039A GB 513409 A GB513409 A GB 513409A
Authority
GB
United Kingdom
Prior art keywords
relating
signalling systems
electrical signalling
electrical
systems
Prior art date
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
GB2059039A
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
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.)
Filing date
Publication date
Priority to BE432570D priority Critical patent/BE432570A/xx
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB2059039A priority patent/GB513409A/en
Priority to US25482639 priority patent/US2279697A/en
Publication of GB513409A publication Critical patent/GB513409A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • H02H1/0076—Details of emergency protective circuit arrangements concerning transmission of signals by superposition on the watched current
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/546—Combination of signalling, telemetering, protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Optical Communication System (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

513,409. Signal transmission systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and TERRONI, T. B. D. Feb. 9, 1938, No. 20590/39. Divided out of 511,136. Drawings to Specification. [Class 40 (iv)] [Also in Groups XXXVII and XL] The description is identical with that of Specification 511,136, but the claims differ. Specification 493,375 also is referred to.
GB2059039A 1938-02-09 1938-02-09 Improvements in or relating to electrical signalling systems Expired GB513409A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE432570D BE432570A (en) 1938-02-09
GB2059039A GB513409A (en) 1938-02-09 1938-02-09 Improvements in or relating to electrical signalling systems
US25482639 US2279697A (en) 1938-02-09 1939-02-06 Electrical signaling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2059039A GB513409A (en) 1938-02-09 1938-02-09 Improvements in or relating to electrical signalling systems

Publications (1)

Publication Number Publication Date
GB513409A true GB513409A (en) 1939-10-11

Family

ID=10148430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2059039A Expired GB513409A (en) 1938-02-09 1938-02-09 Improvements in or relating to electrical signalling systems

Country Status (3)

Country Link
US (1) US2279697A (en)
BE (1) BE432570A (en)
GB (1) GB513409A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR908688A (en) * 1942-02-20 1946-04-16 Constr Telephoniques High frequency traffic system on power transmission lines
US2515855A (en) * 1947-12-11 1950-07-18 Union Switch & Signal Co Means for by-passing a fault of a line circuit and for telephoning to railway trains
US2634334A (en) * 1948-02-20 1953-04-07 Harry N Kalb Carrier current communication system
US2568342A (en) * 1949-09-15 1951-09-18 Ralph D Collins Signaling method and system
BE502150A (en) * 1950-03-27 1900-01-01

Also Published As

Publication number Publication date
BE432570A (en) 1900-01-01
US2279697A (en) 1942-04-14

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