GB1474900A - Magnetically operated display or indicating devices - Google Patents

Magnetically operated display or indicating devices

Info

Publication number
GB1474900A
GB1474900A GB1055276A GB1055276A GB1474900A GB 1474900 A GB1474900 A GB 1474900A GB 1055276 A GB1055276 A GB 1055276A GB 1055276 A GB1055276 A GB 1055276A GB 1474900 A GB1474900 A GB 1474900A
Authority
GB
United Kingdom
Prior art keywords
frame
shaft
bracket
ear
march
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
GB1055276A
Other languages
English (en)
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Publication of GB1474900A publication Critical patent/GB1474900A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
    • G09F9/375—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the position of the elements being controlled by the application of a magnetic field
    • 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)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
GB1055276A 1975-03-28 1976-03-16 Magnetically operated display or indicating devices Expired GB1474900A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/563,227 US3975728A (en) 1975-03-28 1975-03-28 Electromagnetic displays with resiliently mounted components

Publications (1)

Publication Number Publication Date
GB1474900A true GB1474900A (en) 1977-05-25

Family

ID=24249631

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1055276A Expired GB1474900A (en) 1975-03-28 1976-03-16 Magnetically operated display or indicating devices

Country Status (4)

Country Link
US (1) US3975728A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS51114895A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2611741C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1474900A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040193A (en) * 1975-06-10 1977-08-09 Matsushita Electric Industrial Co., Ltd. Display device
US4156872A (en) * 1978-04-21 1979-05-29 Ferranti-Packard Limited Display element write sensor
SE7910071L (sv) * 1978-12-08 1980-06-09 Roy Mcgreevy Skyltanordning
US4223464A (en) * 1979-03-22 1980-09-23 Ferranti-Packard Limited Display or indicator element
USD271219S (en) 1980-12-11 1983-11-01 American Sign & Indicator Corporation Disk for matrix display
US4380879A (en) * 1980-12-11 1983-04-26 American Sign & Indicator Corporation Matrix display
EP0054336A1 (en) * 1980-12-11 1982-06-23 American Sign & Indicator Corporation Matrix display
US4389804A (en) * 1980-12-11 1983-06-28 American Sign & Indicator Corporation Matrix display
US4425864A (en) 1982-02-05 1984-01-17 The Staver Company, Inc. Rotor for electromagnetic indicator
US4496945A (en) * 1982-06-03 1985-01-29 Skyline Products, Inc. Method and apparatus for symbol display device
US4462177A (en) * 1982-12-06 1984-07-31 Nei Canada Limited A.C. connection circuit for display or indicator
US4566210A (en) * 1983-06-13 1986-01-28 Nei Canada Limited Display device
US4597209A (en) * 1983-08-26 1986-07-01 Hukill Marlin E Changeable display device
US4616222A (en) * 1983-10-19 1986-10-07 Time-O-Matic, Inc. Display sign element with anti-bounce limit stop
DE3403073C2 (de) * 1984-01-30 1986-08-21 Schuldes & Theurezbacher Elektronikfertigung, 8192 Geretsried Fernsteuerbare elektromagnetische alphanumerische Anzeigevorrichtung
FR2585164B1 (fr) * 1985-07-22 1988-04-22 Soc Et Dev Prod Electron Cellule elementaire d'affichage pour panneau d'affichage a matrice de points
FR2604812B1 (fr) * 1986-10-06 1989-11-10 Observatoire Cantonal Element d'affichage
US4912442A (en) * 1987-12-17 1990-03-27 Black Fred M Scanned electromechanical alphanumeric display
US5055832A (en) * 1989-06-09 1991-10-08 Dayco Products Canada Inc. Display element with notched disk
GB8914521D0 (en) * 1989-06-23 1989-08-09 Unisplay Sa Improvements in display devices
EP0552165B1 (en) * 1991-08-10 1996-03-06 Unisplay S.A. Improvements in display devices
US5500652A (en) * 1992-11-19 1996-03-19 American Electronic Sign Company Display element with reflective lens
JP3213834B2 (ja) * 1994-07-11 2001-10-02 セイコープレシジョン株式会社 磁気反転式表示装置
US6677922B1 (en) 1995-12-04 2004-01-13 3M Innovative Properties Company Display element having retroreflective surface
US6101750A (en) * 1998-04-10 2000-08-15 Power Engineering & Mfg., Inc. Portable message sign

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036300A (en) * 1958-12-30 1962-05-22 Ibm Electromagnetic display device
US3025512A (en) * 1959-07-01 1962-03-13 Gen Railway Signal Co Changeable indicators for display devices
US3074060A (en) * 1960-06-07 1963-01-15 Avien Inc Indicator employing torsion bar support
US3140553A (en) * 1960-08-24 1964-07-14 Ferranti Ltd Magnetically operated sign
US3295238A (en) * 1963-11-01 1967-01-03 Ferranti Packard Ltd Sign element
US3745563A (en) * 1972-01-10 1973-07-10 Display Technology Corp Arrangement for preserving the free rotatability of the individual vanes in composite display devices

Also Published As

Publication number Publication date
JPS51114895A (en) 1976-10-08
AU1240576A (en) 1977-09-29
US3975728A (en) 1976-08-17
DE2611741C2 (de) 1987-03-12
DE2611741A1 (de) 1976-10-07
JPS5431957B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1979-10-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19960315