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EP0322515A3 - Keyboard venting - Google Patents

Keyboard venting Download PDF

Info

Publication number
EP0322515A3
EP0322515A3 EP19880115128 EP88115128A EP0322515A3 EP 0322515 A3 EP0322515 A3 EP 0322515A3 EP 19880115128 EP19880115128 EP 19880115128 EP 88115128 A EP88115128 A EP 88115128A EP 0322515 A3 EP0322515 A3 EP 0322515A3
Authority
EP
European Patent Office
Prior art keywords
keyboard
chamber
channel
venting
dome
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.)
Withdrawn
Application number
EP19880115128
Other languages
German (de)
French (fr)
Other versions
EP0322515A2 (en
Inventor
Brian G. Spreadbury
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of EP0322515A2 publication Critical patent/EP0322515A2/en
Publication of EP0322515A3 publication Critical patent/EP0322515A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01H2203/00—Form of contacts
    • H01H2203/02—Interspersed fingers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00—Venting
    • H01H2213/002—Venting with external pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00—Venting
    • H01H2213/01—Venting with internal pressure of other switch sites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00—Venting
    • H01H2213/01—Venting with internal pressure of other switch sites
    • H01H2213/014—Accumulator chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/006—Only mechanical function
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/002—Layer thickness
    • H01H2227/006—Spacer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/018—Printed contacts; Metal foil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/022—Collapsable dome

Landscapes

  • Push-Button Switches (AREA)

Abstract

A keyboard (10) (e.g. for a calculator) is described including a base member having a plurality of channels (14) or a chamber, circuitry defining a plurality of switches (17) in a pattern, and optionally a plurality of domes (24) in registry with the switch sites. When a dome is depressed or deflected downward­ ly, the air under the dome passes into a channel or a chamber where it is distributed away from the switch site. A vent aperture (14B) communicating between the channel or chamber and the atmosphere may also be included. Membrane switches can also be used in such a keyboard.
EP19880115128 1987-12-30 1988-09-15 Keyboard venting Withdrawn EP0322515A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13941587A 1987-12-30 1987-12-30
US139415 1987-12-30

Publications (2)

Publication Number Publication Date
EP0322515A2 EP0322515A2 (en) 1989-07-05
EP0322515A3 true EP0322515A3 (en) 1990-09-12

Family

ID=22486538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880115128 Withdrawn EP0322515A3 (en) 1987-12-30 1988-09-15 Keyboard venting

Country Status (2)

Country Link
EP (1) EP0322515A3 (en)
JP (1) JPH01209616A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2571274Y2 (en) * 1991-09-12 1998-05-18 松下電器産業株式会社 Panel switch
DE69703301T2 (en) * 1997-07-23 2001-04-05 Molex Inc Electrical switch and circuit arrangement
JP2001014973A (en) * 1999-06-29 2001-01-19 Alps Electric Co Ltd Sheet with movable contact, and sheet switch
MXPA02011633A (en) 2000-05-22 2004-05-17 Digit Wireless Llc Input devices and their use.
EP1528584A3 (en) * 2000-05-22 2005-05-25 Digit Wireless, Llc Input devices and their use
US6617536B2 (en) * 2000-11-29 2003-09-09 Yazaki Corporation Dome switch
US6552289B2 (en) * 2000-11-29 2003-04-22 Yazaki Corporation Dome switch
US6727445B2 (en) * 2001-06-14 2004-04-27 Secure Care Products, Inc. Sensor pads for patient monitoring devices
FI20021024A7 (en) 2002-05-30 2003-12-01 Nokia Corp Cover structure for keyboard
WO2004008096A1 (en) * 2002-07-10 2004-01-22 Ab Beheer B.V. Hand pressure sensor warning device
KR20040088165A (en) * 2003-04-09 2004-10-16 이수호 PCB-typed Tact Switch
KR100607042B1 (en) * 2003-06-07 2006-08-01 이수호 Printed Circuit Board Tact Switch
JP3808073B2 (en) * 2003-12-05 2006-08-09 シチズン電子株式会社 Key sheet module
US7214874B2 (en) 2004-11-04 2007-05-08 International Business Machines Corporation Venting device for tamper resistant electronic modules
US7145092B2 (en) 2005-02-25 2006-12-05 Nokia Corporation Keyboard structure
WO2008086215A2 (en) * 2007-01-05 2008-07-17 Johnson Controls Technology Company Multi-finish deep draw mold behind film
DE602009000633D1 (en) 2008-10-07 2011-03-03 Research In Motion Ltd Sealed dome circuit for a mobile electronic device
US8282007B1 (en) * 2009-04-06 2012-10-09 Dynamics Inc. Laminated cards with manual input interfaces
CN102025076B (en) * 2009-09-22 2014-03-26 深圳富泰宏精密工业有限公司 Water-proofing structure and portable electronic device with same
DE102009051829B4 (en) * 2009-11-04 2014-05-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Electric switch
JP5555547B2 (en) * 2010-05-31 2014-07-23 ホシデン株式会社 Key switch
AU2017335635B2 (en) 2016-09-29 2023-01-05 Smith & Nephew, Inc. Construction and protection of components in negative pressure wound therapy systems
US11974903B2 (en) 2017-03-07 2024-05-07 Smith & Nephew, Inc. Reduced pressure therapy systems and methods including an antenna

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995126A (en) * 1975-04-03 1976-11-30 Magic Dot, Inc. Membrane keyboard apparatus
EP0051749A1 (en) * 1980-11-06 1982-05-19 PREH, Elektrofeinmechanische Werke Jakob Preh Nachf. GmbH & Co. Keyboard
US4423294A (en) * 1982-06-17 1983-12-27 The Hall Company Laminate switch assembly having improved durability
US4463234A (en) * 1983-11-02 1984-07-31 Centralab Inc. Tactile feel membrane switch assembly
GB2183401A (en) * 1985-11-22 1987-06-03 Morse Nena Switch assembly
GB2191340A (en) * 1986-05-20 1987-12-09 Amalgamated Wireless Australas Interchangeable designation for membrane keyboard

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995126A (en) * 1975-04-03 1976-11-30 Magic Dot, Inc. Membrane keyboard apparatus
EP0051749A1 (en) * 1980-11-06 1982-05-19 PREH, Elektrofeinmechanische Werke Jakob Preh Nachf. GmbH & Co. Keyboard
US4423294A (en) * 1982-06-17 1983-12-27 The Hall Company Laminate switch assembly having improved durability
US4463234A (en) * 1983-11-02 1984-07-31 Centralab Inc. Tactile feel membrane switch assembly
GB2183401A (en) * 1985-11-22 1987-06-03 Morse Nena Switch assembly
GB2191340A (en) * 1986-05-20 1987-12-09 Amalgamated Wireless Australas Interchangeable designation for membrane keyboard

Also Published As

Publication number Publication date
EP0322515A2 (en) 1989-07-05
JPH01209616A (en) 1989-08-23

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Effective date: 19901002