GB873983A - Improvements in inductive communication systems - Google Patents

Improvements in inductive communication systems

Info

Publication number
GB873983A
GB873983A GB4046157A GB4046157A GB873983A GB 873983 A GB873983 A GB 873983A GB 4046157 A GB4046157 A GB 4046157A GB 4046157 A GB4046157 A GB 4046157A GB 873983 A GB873983 A GB 873983A
Authority
GB
United Kingdom
Prior art keywords
station
loops
fixed
inductive
amplifier
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
GB4046157A
Inventor
Guy Rupert Fountain
Ronald Hastings Rackham
Terence Brian Livingstone
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.)
Tannoy Ltd
Original Assignee
Tannoy 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
Application filed by Tannoy Ltd filed Critical Tannoy Ltd
Priority to GB4046157A priority Critical patent/GB873983A/en
Publication of GB873983A publication Critical patent/GB873983A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

873,983. Inductive telephony. TANNOY Ltd. March 31, 1959 [Dec. 31, 1957], No. 40461/57. Class 40(5) In an inductive telephonic system a transmitter and receiver members respectively in a moving structure e.g. the cab of a gantry crane and a fixed station e.g. a control point, are inductively coupled by one or more loops fixed to the structure and connected to the station mounted thereon and one or more loops fixed relative to the base and connected to the fixed station. In the embodiment described two cranes have identical stations 1, 1a, Fig. 1, mutually coupled to single turn loops 2, 2a connected to an amplifier and control panel 3, by multi-turn coils 16, 16a. At one station a Push to talk button 4 energizes the sending circuit and transmits an h.f. signal together with the audio signal to prepare the amplifier 3 and receiver station by known relay circuits, after filtering of the h.f. signal.
GB4046157A 1957-12-31 1957-12-31 Improvements in inductive communication systems Expired GB873983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4046157A GB873983A (en) 1957-12-31 1957-12-31 Improvements in inductive communication systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4046157A GB873983A (en) 1957-12-31 1957-12-31 Improvements in inductive communication systems

Publications (1)

Publication Number Publication Date
GB873983A true GB873983A (en) 1961-08-02

Family

ID=10415009

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4046157A Expired GB873983A (en) 1957-12-31 1957-12-31 Improvements in inductive communication systems

Country Status (1)

Country Link
GB (1) GB873983A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142508A (en) * 1983-06-29 1985-01-16 Private Mobile Rentals Limited Improvements relating to communications systems
GB2197160A (en) * 1986-10-01 1988-05-11 Dataproducts New England Inc Cordless communications system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142508A (en) * 1983-06-29 1985-01-16 Private Mobile Rentals Limited Improvements relating to communications systems
GB2197160A (en) * 1986-10-01 1988-05-11 Dataproducts New England Inc Cordless communications system

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