GB1434909A - Operating knob assembly for an electrical switch - Google Patents

Operating knob assembly for an electrical switch

Info

Publication number
GB1434909A
GB1434909A GB4285272A GB4285272A GB1434909A GB 1434909 A GB1434909 A GB 1434909A GB 4285272 A GB4285272 A GB 4285272A GB 4285272 A GB4285272 A GB 4285272A GB 1434909 A GB1434909 A GB 1434909A
Authority
GB
United Kingdom
Prior art keywords
knob
legends
viewable
angular position
light guide
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
GB4285272A
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical 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 Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB4285272A priority Critical patent/GB1434909A/en
Publication of GB1434909A publication Critical patent/GB1434909A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • G05G1/10—Details, e.g. of discs, knobs, wheels or handles
    • G05G1/105—Details, e.g. of discs, knobs, wheels or handles comprising arrangements for illumination
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/025—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)

Abstract

1434909 Indicators for switches LUCAS ELECTRICAL CO Ltd 20 Aug 1973 [15 Sept 1972] 42852/72 Heading H1N A knob for a rotary switch has an aperture 14 accommodating a light guide 16 having one end 18 viewable and an opposite end 19 of arcuate form with the axis of the arc lying on the pivot axis A-A of the knob, said end 19 being provided with a plurality of legends thereacross such that, in use, light from a fixed source enters said end 19 and causes one of the legends to be viewable at the end 18 in dependance on the angular position of the knob and thus the condition of the switch. As shown the light guide 16 is of clear acrylic with concavely curved sides 20, 21 and a projection 17 which engages a recess 15 in the knob to retain the guide 16 in position. The legends preferably take the form of different coloured portions 23, 24, 25, 26 on the face 22 of end 19 and may have separating ribs therebetween. The portion 26 may be recessed as shown to allow for axial movement of the knob in one angular position thereof.
GB4285272A 1972-09-15 1972-09-15 Operating knob assembly for an electrical switch Expired GB1434909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4285272A GB1434909A (en) 1972-09-15 1972-09-15 Operating knob assembly for an electrical switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4285272A GB1434909A (en) 1972-09-15 1972-09-15 Operating knob assembly for an electrical switch

Publications (1)

Publication Number Publication Date
GB1434909A true GB1434909A (en) 1976-05-12

Family

ID=10426251

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4285272A Expired GB1434909A (en) 1972-09-15 1972-09-15 Operating knob assembly for an electrical switch

Country Status (1)

Country Link
GB (1) GB1434909A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869520A2 (en) * 1997-03-07 1998-10-07 Illinois Tool Works Inc. Illuminated knob assembly
EP1508726A2 (en) 2003-08-22 2005-02-23 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Shift lever device
EP2282250A1 (en) * 2009-08-06 2011-02-09 elobau GmbH & Co. KG Thumbwheel
US8813676B2 (en) 2010-05-07 2014-08-26 Whirlpool Corporation User interface for a controller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869520A2 (en) * 1997-03-07 1998-10-07 Illinois Tool Works Inc. Illuminated knob assembly
EP0869520A3 (en) * 1997-03-07 1999-05-06 Illinois Tool Works Inc. Illuminated knob assembly
EP1508726A2 (en) 2003-08-22 2005-02-23 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Shift lever device
EP1508726A3 (en) * 2003-08-22 2010-05-19 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Shift lever device
EP2282250A1 (en) * 2009-08-06 2011-02-09 elobau GmbH & Co. KG Thumbwheel
US8813676B2 (en) 2010-05-07 2014-08-26 Whirlpool Corporation User interface for a controller

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee