GB1325744A - Electromagnetic indicators - Google Patents

Electromagnetic indicators

Info

Publication number
GB1325744A
GB1325744A GB1325744DA GB1325744A GB 1325744 A GB1325744 A GB 1325744A GB 1325744D A GB1325744D A GB 1325744DA GB 1325744 A GB1325744 A GB 1325744A
Authority
GB
United Kingdom
Prior art keywords
coils
rotor
stator
pole pieces
positions
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
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.)
Veeder Industries Inc
Original Assignee
Veeder Industries Inc
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 Veeder Industries Inc filed Critical Veeder Industries Inc
Publication of GB1325744A publication Critical patent/GB1325744A/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
    • G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
    • G09F11/23—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the advertising or display material forming part of rotating members, e.g. in the form of perforations, prints, or transparencies on a drum or disc

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

1325744 Dynamo-electric machines VEEDER INDUSTRIES Inc 26 Oct 1970 50677/70 Heading H2A An indicator comprises a stator 13 of ferromagnetic material, having pole pieces P1, P4 &c. on which coils are wound, and a rotor, having a magnet 5, mounted inside a drum carrying numeral marks. A vane 7, made either of soft iron or a material having an appreciable hysteresis, is asymmetrically mounted on the rotor to provide a torque on the rotor when a rotation through 180 degrees is required. In all there are five pole pieces on the stator used to define ten positions. Eeach pole piece has two positions associated with it, depending on the direction of current flow through the windings. In another embodiment ten pole pieces and coils are provided on the stator, the current flowing in one direction only through the coils.
GB1325744D 1970-10-26 1970-10-26 Electromagnetic indicators Expired GB1325744A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5067770 1970-10-26

Publications (1)

Publication Number Publication Date
GB1325744A true GB1325744A (en) 1973-08-08

Family

ID=10456903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1325744D Expired GB1325744A (en) 1970-10-26 1970-10-26 Electromagnetic indicators

Country Status (1)

Country Link
GB (1) GB1325744A (en)

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Legal Events

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