GB2115982B - Electrical switch keyboard with asymmetrical snap-action key protrusions - Google Patents

Electrical switch keyboard with asymmetrical snap-action key protrusions

Info

Publication number
GB2115982B
GB2115982B GB08303381A GB8303381A GB2115982B GB 2115982 B GB2115982 B GB 2115982B GB 08303381 A GB08303381 A GB 08303381A GB 8303381 A GB8303381 A GB 8303381A GB 2115982 B GB2115982 B GB 2115982B
Authority
GB
United Kingdom
Prior art keywords
asymmetrical
snap
electrical switch
action key
key protrusions
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
GB08303381A
Other versions
GB2115982A (en
GB8303381D0 (en
Inventor
Leo L Rodrigue
Takao Kohara
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.)
Tokico Ltd
Flex Key Corp
Original Assignee
Tokico Ltd
Flex Key Corp
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 Tokico Ltd, Flex Key Corp filed Critical Tokico Ltd
Publication of GB8303381D0 publication Critical patent/GB8303381D0/en
Publication of GB2115982A publication Critical patent/GB2115982A/en
Application granted granted Critical
Publication of GB2115982B publication Critical patent/GB2115982B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/24—Warming devices
    • A47J36/2444—Drinking cups with heating means
    • A47J36/2461—Drinking cups with heating means with electrical heating means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/002—Materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/068—Properties of the membrane
    • H01H2209/078—Conductive rubber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/022—Asymmetric; Elliptic; Square
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/01—Off centre actuation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/018—Indication of switch sites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/024—Packing between substrate and membrane
    • H01H2229/028—Adhesive
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05—Heating plates with pan detection means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Push-Button Switches (AREA)
GB08303381A 1981-07-29 1983-02-08 Electrical switch keyboard with asymmetrical snap-action key protrusions Expired GB2115982B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28811381A 1981-07-29 1981-07-29
US35231082A 1982-02-25 1982-02-25

Publications (3)

Publication Number Publication Date
GB8303381D0 GB8303381D0 (en) 1983-03-16
GB2115982A GB2115982A (en) 1983-09-14
GB2115982B true GB2115982B (en) 1986-02-26

Family

ID=26964842

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08303381A Expired GB2115982B (en) 1981-07-29 1983-02-08 Electrical switch keyboard with asymmetrical snap-action key protrusions

Country Status (1)

Country Link
GB (1) GB2115982B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321134A (en) * 1996-12-24 1998-07-15 Nokia Mobile Phones Ltd An assembly for a keypad
DE202006011302U1 (en) * 2006-07-22 2006-09-21 Hoffmann & Krippner Gmbh Keyboard, has evaluation unit freely programmed based on allocation of determined depressing positions and switching threshold e.g. minimum depressing force, for successive key operation and programmed at depressing positions for user

Also Published As

Publication number Publication date
GB2115982A (en) 1983-09-14
GB8303381D0 (en) 1983-03-16

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Legal Events

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