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GB922783A - Improvements in electro-magnetic indicators - Google Patents

Improvements in electro-magnetic indicators

Info

Publication number
GB922783A
GB922783A GB1891058A GB1891058A GB922783A GB 922783 A GB922783 A GB 922783A GB 1891058 A GB1891058 A GB 1891058A GB 1891058 A GB1891058 A GB 1891058A GB 922783 A GB922783 A GB 922783A
Authority
GB
United Kingdom
Prior art keywords
electromagnet
indicator
electro
june
indicating element
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
GB1891058A
Inventor
Stanley Albert Ponting
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.)
Dowty Electronics Ltd
Original Assignee
Dowty Electronics 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 Dowty Electronics Ltd filed Critical Dowty Electronics Ltd
Priority to GB1891058A priority Critical patent/GB922783A/en
Publication of GB922783A publication Critical patent/GB922783A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/24—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane
    • G08B5/30—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane with rotating or oscillating members, e.g. vanes

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetically Actuated Valves (AREA)
  • Contacts (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

922,783. Visible signalling apparatus. DOWTY ELECTRICS Ltd. June 15, 1959 [June 13, 1958], No. 18910/58. Class 118. An electromagnetic indicator of the kind having a ferromagnetic portion secured to the indicator for attraction by a suitably positioned electromagnet, has the indicating element mounted in a compartment sealed off from the electromagnet. An indicator similar to that described in Specification 740,780 has a disc 26 soldered at points 27 to seal the indicating element off from the electromagnet 13. Specification 922,784 also is referred to.
GB1891058A 1958-06-13 1958-06-13 Improvements in electro-magnetic indicators Expired GB922783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1891058A GB922783A (en) 1958-06-13 1958-06-13 Improvements in electro-magnetic indicators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1891058A GB922783A (en) 1958-06-13 1958-06-13 Improvements in electro-magnetic indicators

Publications (1)

Publication Number Publication Date
GB922783A true GB922783A (en) 1963-04-03

Family

ID=10120524

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1891058A Expired GB922783A (en) 1958-06-13 1958-06-13 Improvements in electro-magnetic indicators

Country Status (1)

Country Link
GB (1) GB922783A (en)

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