GB1199723A - Improvements relating to Electromagnetic Indicators - Google Patents

Improvements relating to Electromagnetic Indicators

Info

Publication number
GB1199723A
GB1199723A GB4116666A GB4116666A GB1199723A GB 1199723 A GB1199723 A GB 1199723A GB 4116666 A GB4116666 A GB 4116666A GB 4116666 A GB4116666 A GB 4116666A GB 1199723 A GB1199723 A GB 1199723A
Authority
GB
United Kingdom
Prior art keywords
indicators
indicator
electromagnet
sept
arms
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
GB4116666A
Inventor
Leslie King
Frederick Raymond Jones
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.)
Plessey Co Ltd
Original Assignee
Plessey 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
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB4116666A priority Critical patent/GB1199723A/en
Priority to DE19671537645 priority patent/DE1537645A1/en
Publication of GB1199723A publication Critical patent/GB1199723A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Displays For Variable Information Using Movable Means (AREA)

Abstract

1,199,723. Electromagnetic indicators. PLESSEY CO. Ltd. 12 Sept., 1967 [15 Sept., 1966], No. 41166/66. Heading G4F. [Also in Division H1] An indicator comprises a U-shaped electromagnet 1, 5 and a rotatable indicator member 7 which is attracted to a rest position by a permanent magnet such as 17 but which revolves to positions such as 15 and 16, depending upon the direction of energization of the coil 5, the arms of the electromagnet being asymmetrical so as to provide increased spacing when the indicators are arranged side by side. The spacing prevents flux crossing to other indicators. In Fig. 2 the arms have the shape shown. The indicator shown also includes a viewing lens 2, a lamp 14 and a spark suppression capacitor. The winding of the electromagnet may have two alternatively energizable windings to revolve the indicator in corresponding directions.
GB4116666A 1966-09-15 1966-09-15 Improvements relating to Electromagnetic Indicators Expired GB1199723A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4116666A GB1199723A (en) 1966-09-15 1966-09-15 Improvements relating to Electromagnetic Indicators
DE19671537645 DE1537645A1 (en) 1966-09-15 1967-09-14 Electromagnetic display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4116666A GB1199723A (en) 1966-09-15 1966-09-15 Improvements relating to Electromagnetic Indicators

Publications (1)

Publication Number Publication Date
GB1199723A true GB1199723A (en) 1970-07-22

Family

ID=10418416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4116666A Expired GB1199723A (en) 1966-09-15 1966-09-15 Improvements relating to Electromagnetic Indicators

Country Status (2)

Country Link
DE (1) DE1537645A1 (en)
GB (1) GB1199723A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1076017B (en) * 1977-02-01 1985-04-22 Nuovo Pignone Spa IMPROVEMENTS IN A SEVEN SEGMENT ELECTROMECHANICAL NUMERIC INDICATOR

Also Published As

Publication number Publication date
DE1537645A1 (en) 1969-10-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees