US3829646A - Push-button control member with push-through coupling - Google Patents

Push-button control member with push-through coupling Download PDF

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Publication number
US3829646A
US3829646A US00336170A US33617073A US3829646A US 3829646 A US3829646 A US 3829646A US 00336170 A US00336170 A US 00336170A US 33617073 A US33617073 A US 33617073A US 3829646 A US3829646 A US 3829646A
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US
United States
Prior art keywords
contact
coupling
compressible
rigid
control member
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 - Lifetime
Application number
US00336170A
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English (en)
Inventor
J Lorteije
E Schmidt
Der Put H Van
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.)
US Philips Corp
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US Philips Corp
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Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3829646A publication Critical patent/US3829646A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/12—Construction of key buttons
    • 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
    • H01H13/705—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 characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • 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
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/016—Lever; Rocker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/064—Limitation of actuating pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/022—Collapsable dome

Definitions

  • ABSTRACT A control member for a contact device, comprising a first stationary cylinder of elastically compressible material, in which a second cylinder of the same material is coaxially arranged for movement with respect to this first cylinder by means of an elastically compressible annular coupling.
  • the two cylinders and the coupling are constructed to form one integral unit.
  • the coupling comprises a comparatively rigid centre portion which is connected by comparatively flexible portions to the cylinder, and cooperates with a pressure [56] R f r n Cit d edge provided on the inner cylinder.
  • the invention relates to a control member for a contact device, comprising a hollow, comparatively rigid first portion of elastic compressible material with respect to which a second portion of elastic compressible material, connected to the first portion by means of a compressible coupling, is displaceable.
  • the said second portion is provided with a pressure member, the two portions, arranged to be coaxial, and the compressible coupling being constructed to form one integral unit.
  • the coupling In a known control member of the kind set forth (French Pat. specification No. 1,216,717) the coupling consists of a ring of compressible material which has substantially the same resistance against bending over its entire section. The stroke performed in the said control member during the contact movement is proportioned such that a maximum pressure energy accumulated in the coupling (pressure point) is not passed.
  • the drawback of a control member of this kind is that the operator does not receive a clear indication whether or not proper electrical contact has been made, unless it is accepted that a comparatively large force must always be exerted so as to obtain this certainty. However, this will readily lead to damage or premature wear of the contacts.
  • the invention has for its object to provide a control member with a compressible coupling by means of which the described drawback is eliminated.
  • the invention is characterized in that the compressible coupling comprises a comparatively rigid portion which is connected on one side, by a compara-' tively flexible portion, to the one portion of elastic material and on the other side, again by a comparatively flexible portion, to the other portion of elastic material.
  • the control member is provided with a pressure edge which is connected to the movable second portion and which compresses the comparatively rigid portion of the coupling during the contact movement.
  • the invention also has for its object to provide a control member whose pressure member cannot damage the contacts to be switched, not even in the case of very rough operation.
  • the invention is further characterized in that the movable second, comparatively rigid portion is provided with a flexible diaphragm, the said pressure member being connected thereto.
  • FIG. 1 is a partial sectional view at an increased scale of a control member according to the invention.
  • FIG. 2 is a sectional view of a contact device in the neutral position comprising a control member as shown in FIG. 1.
  • FIG. 3 is a sectional view of the contact device shown in FIG. 2 in the switching position.
  • FIG. 4 is a partial plan and sectional view of a multiple contact device comprising a number of control members according to the invention.
  • the coupling 7 can also consist of a number of bridge segments.
  • the cylinders 3 and 5 and the coupling 7 are constructed to form one unit, preferably by pressing or moulding.
  • the control member can be made of elastic high-polymeric materials such as, for example, a natural or synthetic rubber. As a result of their wall thickness, the cylinders 3 and 5 are comparatively rigid.
  • the coupling 7 comprises a comparatively rigid portion 9 which is connected on one side, by a comparatively flexible portion 11, to the inner cylinder 5 and on the other side,"by a comparatively flexible portion 13, to the outer cylinder 3.
  • the inner cylinder 5 accommodates a closed disc-like diaphragm 15 on which a pressure member 17 is formed.
  • the pressure member can also be connected to inner cylinder 5 by means of bridge segments. The thickness of the portion 9 exceeds that of the portions 11 and 13.
  • a closed diaphragm is to be preferred in order to meet severe requirements with respect to sealing against dust.
  • a pressed-in pin can alternatively be used.
  • the diaphragm 15 has a thickness such that when a forced is exerted on the pressure member 17, it starts to bend through a distance which will be discussed hereinafter.
  • a button 19 is provided which bears on a ridge 21 which is formed on the inner wall of the cylinder.
  • the button 19 can be clamped in the inner cylinder 5 or be glued thereto. It is alternatively possible to press the button 19 to form one assembly with the cylinders 3 and 5 and the coupling 7. However, in that case the shape of the button will deviate slightly from that shown in FIG. 1.
  • the button 19 is provided with acircular pressure edge 23 which cooperates with the coupling 7 during the contact movement.
  • the pressure edge 23 can either be situated at some distance above the coupling 7 or be in contact with the coupling 7.
  • FIGS. 2 and 3 show a contact device, in the neutral position and the switching position, respectively, which is provided with a control member according to the invention.
  • a control member according to the invention is particularly suitable for contact devices as shown in the FIGS.
  • a contact device of this kind comprises an electrically insulating substrate 25 on which a metal contact strip 27 is provided.
  • the contact strip can be provided, for example, according to known printed wiring techniques.
  • an insulating substrate 29 which leaves the contact strip 27 locally exposed through an opening 31.
  • a flexible metal contact strip 33 which bridges the opening 31.
  • a control member according to the invention is connected to the assembly of the said substrates and strips.
  • the button 19 is guided in a plate 37 which is provided on the outer cylinder 3 of the control member.
  • the transition between portion 11 and portion 9 of the coupling 7 is initially displaced over a smaller distance than the pressure member 17 or the inner cylinder 5 when the button 19 is depressed.
  • the pressure edge 23 contacts the coupling 7 only after the depression has progressed somewhat.
  • the comparatively rigid portion 9 of the coupling 7 is then somewhat bent through as if it were hinged about the comparatively flexible portion 13 of the coupling.
  • portion 9 is such that the better part of the energy applied to the button 19 is taken up for the compression of portion 9, whilst only a small part is taken up for the bending of part 9. A small part of the energy is also taken up to deform the comparatively flexible portions 11 and 13 of the coupling 7 which act as an elastic hinge. It will be obvious that when button 19 is further depressed, the portion 9 is compressed between portion 13 and the pressure edge 23 until the instant at which portion 9 folds over as if it were about the portion 13 which acts as an elastic hinge. As a result, portion 9 will assume a state of much lower energy, which can be clearly felt by the operator.
  • the best defined pressure point occurs when the pressure edge 23 engages near the transition between portion 9 and portion 11 of the coupling 7.
  • the pressure member 17 has come into contact with the flexible foil 35 so that the flexible contact strip 33 is pressed against the contact strip 27 upon further depression, with the result that the contact strips 27 and 33 are electrically interconnected.
  • the outer diameter of button 19 is proportioned such that the button 19 always returns to the neutral position. If the diameter were too large, the friction between the coupling 7 and the pressure edge 23 would prevent the return to the neutral position.
  • the inner cylinder 5 has a length such that it has on its lower side an edge 39 which acts as an abutment.
  • control members according to the invention can also be used in combination with contacts where two comparatively robust contact reeds have to be pressed against each other. Such contacts always require a contact pressure limitation.
  • the pressure member 17 can be formed by a projection which is rigidly connected to a, solid inner cylinder 5.
  • the abutment is then formed by the stationary contact reed.
  • the resilient contact reed can be made to abut in known manner on a fixed sbutment.
  • a plurality of control members according to the invention can be used in a multiple contact device which is suitable, for example, for use in pocket calculators.
  • These control members can be manufactured both individually and simultaneously. In the latter case there are no longer individual outer cylinders 3, but an integral elastic high-polymeric layer 41 in which all control members are pressed.
  • the guide plate 37 for the buttons 19 can be omitted and replaced by arms 43 which are formed on the buttons 19 and which hinge in openings 45 in the layer 41.
  • a control member for a contact device comprising a hollow relatively rigid first body of elastic compressible material, a second relatively rigid body of elastic compressible material coaxially arranged with respect to said first body, a compressible coupling connecting said first body with said second body so that said second body is axially displaceable for contact movement with respect to said first body, said first body said second body and said compressible coupling forming a single integral unit, a pressure member carried on said second body, said compressible coupling comprising a rigid portion, a first flexible portion connecting one side of said rigid portion to said first body, and a second flexible portion connecting the other side of said rigid portion to said second body, and a pressure edge connected to said displaceable second body engaging said rigid portion of said compressible coupling when said second body is axially displaced so as to compress said rigid portion of the coupling during contact moving.
  • a control member for a contact device comprising a hollow relatively rigid first body of elastic compressible material, a second relatively rigid body of elastic compressible material coaxially arranged with respect to said first body, a compressible coupling connecting said first body with said second body so that said second body is axially displaceable for contact movement with respect to said first body, said first body said second body and said compressible coupling forming a single integral unit, a flexible diaphragm carried by said second body, a pressure member carried on said flexible diaphragm, said compressible coupling comprising a rigid portion, a first flexible portion connecting one side of said rigid portion to said first body, and a second flexible portion connecting the other side of said rigid portion to said second body, and a pressure edge connected to said displaceable second body engaging said rigid portion of said compressible coupling when said second body is axially displaced so as to compress said rigid portion of the coupling during contact moving.
  • said compressible coupling further comprises a curved trough-like section, the curvature of said section being directed in a direction opposite to the direction of axial displacement of said second body for contact movement.
  • control member according to claim 2 further comprising an annular abutment provided on said second body for limiting axial displacement thereof.
  • a contact device comprising a first flexible contact strip located in a first flat plane, a second contact strip located in a second flat plane spaced from said first flat plane, a layer of electrically insulating material located between said first and second contact strips, an opening in said insulating layer, a control member for moving said flexible first contact strip into electrical contact with said second contact strip through said opening, said control member comprising a hollow relatively rigid first body of elastic compressible material connected to the contact device by an adhesive layer, a second relatively rigid body of elastic compressible material coaxially arranged with respect to said first body, a compressible coupling connecting said first body with said second body so that said second body is axially displaceable with respect to said first body for causing movement of said first contact strip into contact with said second contact strip, said first body, said second body and said compressible coupling forming a single integral unit, a flexible diaphragm carried by said second body, a pressure member carried by said flexible diaphragm for cooperative engagement with said first contact strip, said compressible coupling comprising

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  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
US00336170A 1972-03-04 1973-02-27 Push-button control member with push-through coupling Expired - Lifetime US3829646A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7202909A NL7202909A (enrdf_load_html_response) 1972-03-04 1972-03-04

Publications (1)

Publication Number Publication Date
US3829646A true US3829646A (en) 1974-08-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00336170A Expired - Lifetime US3829646A (en) 1972-03-04 1973-02-27 Push-button control member with push-through coupling

Country Status (8)

Country Link
US (1) US3829646A (enrdf_load_html_response)
JP (1) JPS5326661B2 (enrdf_load_html_response)
CA (1) CA987715A (enrdf_load_html_response)
FR (1) FR2174938B1 (enrdf_load_html_response)
GB (1) GB1375333A (enrdf_load_html_response)
IT (1) IT977943B (enrdf_load_html_response)
NL (1) NL7202909A (enrdf_load_html_response)
SE (1) SE383665B (enrdf_load_html_response)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932722A (en) * 1974-04-16 1976-01-13 Nippo Communication Industrial Co., Ltd. Push button body for a push-button switch providing snap-action of the switch
US3940578A (en) * 1973-04-09 1976-02-24 Alphameric Keyboards Limited Keyboard structure having panel mounted key actuators with electrical component operating element
US3969600A (en) * 1975-06-11 1976-07-13 Burroughs Corporation Tactile feedback keyboard switch assembly and actuator
US4070555A (en) * 1975-11-28 1978-01-24 The Alliance Manufacturing Company Switching mechanism
US4127758A (en) * 1977-10-13 1978-11-28 Sheldahl, Inc. Tactile layer having hinged dome
US4156120A (en) * 1976-12-20 1979-05-22 Ellingsen Bjorn S Variable spring force keyboard pad
JPS5545170U (enrdf_load_html_response) * 1978-09-20 1980-03-24
DE2914954A1 (de) * 1979-04-12 1980-10-30 Rafi Gmbh & Co Taster oder schalter fuer tastaturen, elektrische geraete o.dgl.
DE3041470A1 (de) * 1980-11-04 1982-06-09 E. Dold & Söhne KG, 7743 Furtwangen Taste
US4367384A (en) * 1979-09-18 1983-01-04 U.S. Philips Corporation Push-button switch
EP0074315A3 (en) * 1981-09-01 1983-10-05 La Telemecanique Electrique Hermetically sealed, modular, tactile keyboard
WO1984001051A1 (en) * 1982-08-30 1984-03-15 Ericsson Telefon Ab L M Mechanism in keys for keyboards
US4440992A (en) * 1982-03-03 1984-04-03 Amp Incorporated Low profile keyboard switch actuating assembly
US4527030A (en) * 1980-11-06 1985-07-02 Preh Elektrofeinmechanische Werke, Jakob Preh Nachf., Gmbh & Co. Keyboard
USRE32419E (en) * 1981-03-16 1987-05-12 Engineering Research Applications, Inc. Molded keyboard and method of fabricating same
US4677268A (en) * 1983-03-28 1987-06-30 The Gates Corporation Elastomeric switch control device
US4705925A (en) * 1985-05-30 1987-11-10 Siemens Aktiengesellschaft Key module with key member retained by swing members
DE3736116A1 (de) * 1987-10-26 1989-05-11 Preh Elektro Feinmechanik Tastenkappe fuer eine tastatur
EP0405775A3 (en) * 1989-06-29 1992-04-22 Ing. C. Olivetti & C., S.P.A. Contact-type keyboard
US5214256A (en) * 1991-02-27 1993-05-25 Ralph Ipcinski Membrane type switch with improved elastomeric actuator including a cap mounted in an actuator depression
US5310973A (en) * 1991-10-08 1994-05-10 Silitek Corporation Structure of key switch
US5358344A (en) * 1992-09-01 1994-10-25 Key Tronic Corporation Keyboard with full-travel, self-leveling keyswitches
US5389757A (en) * 1993-06-15 1995-02-14 Digital Equipment Corporation Elastomeric key switch actuator
US5422447A (en) * 1992-09-01 1995-06-06 Key Tronic Corporation Keyboard with full-travel, self-leveling keyswitches and return mechanism keyswitch
EP0753197A4 (en) * 1994-03-28 1998-08-12 Ericsson Ge Mobile Inc KEY ARRANGEMENT AND KEYBOARD WITH DEVICE FOR WITHDRAWING AND STABILIZING A KEY
US5905235A (en) * 1995-05-27 1999-05-18 Nokia Mobile Phones, Ltd. Key assembly
US5950810A (en) * 1997-02-15 1999-09-14 Hon Hai Precision Ind. Co., Ltd. Elastic apparatus for a keyswitch key of a keyboard and the keyswitch key using the same
US20060086599A1 (en) * 2004-10-22 2006-04-27 Intergraph Hardware Technologies Company Tactile feedback plunger switch
US20090001554A1 (en) * 2007-06-26 2009-01-01 Infineon Technologies Ag Semiconductor device
US20120160645A1 (en) * 2009-07-07 2012-06-28 Eltek S.P.A. Switch for vehicles
US20130116050A1 (en) * 2011-11-04 2013-05-09 Target Brands, Inc. Transaction product with selectively illuminated buttons
EP3045080A4 (en) * 2013-09-10 2017-04-19 Fujikura Ltd. Seat device

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505877A (enrdf_load_html_response) * 1973-05-18 1975-01-22
JPS5613709Y2 (enrdf_load_html_response) * 1974-04-22 1981-03-31
JPS5113572U (enrdf_load_html_response) * 1974-07-19 1976-01-31
JPS5133876A (enrdf_load_html_response) * 1974-09-18 1976-03-23 Gikoo Kk
JPS529768U (enrdf_load_html_response) * 1975-07-09 1977-01-24
JPS5655864Y2 (enrdf_load_html_response) * 1975-07-09 1981-12-26
JPS5468171U (enrdf_load_html_response) * 1977-10-24 1979-05-15
JPS58117616A (ja) * 1982-11-17 1983-07-13 信越ポリマー株式会社 押釦スイツチ部品
EP0117732A3 (en) * 1983-03-01 1986-09-24 Plessey Overseas Limited Push buttons
US4716262A (en) * 1983-10-21 1987-12-29 Nena Morse Vandal-resistant telephone keypad switch
JPS6075928U (ja) * 1983-10-31 1985-05-28 株式会社ジエルコ 押しボタンスイツチ
JPS61166417U (enrdf_load_html_response) * 1985-04-02 1986-10-15
JPH0422024A (ja) * 1990-05-15 1992-01-27 Fujitsu Ltd キーボード
JPH0817064B2 (ja) * 1990-07-12 1996-02-21 富士通株式会社 薄型キーボード

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940578A (en) * 1973-04-09 1976-02-24 Alphameric Keyboards Limited Keyboard structure having panel mounted key actuators with electrical component operating element
US3932722A (en) * 1974-04-16 1976-01-13 Nippo Communication Industrial Co., Ltd. Push button body for a push-button switch providing snap-action of the switch
US3969600A (en) * 1975-06-11 1976-07-13 Burroughs Corporation Tactile feedback keyboard switch assembly and actuator
US4070555A (en) * 1975-11-28 1978-01-24 The Alliance Manufacturing Company Switching mechanism
US4156120A (en) * 1976-12-20 1979-05-22 Ellingsen Bjorn S Variable spring force keyboard pad
US4127758A (en) * 1977-10-13 1978-11-28 Sheldahl, Inc. Tactile layer having hinged dome
JPS5545170U (enrdf_load_html_response) * 1978-09-20 1980-03-24
DE2914954A1 (de) * 1979-04-12 1980-10-30 Rafi Gmbh & Co Taster oder schalter fuer tastaturen, elektrische geraete o.dgl.
US4367384A (en) * 1979-09-18 1983-01-04 U.S. Philips Corporation Push-button switch
DE3041470A1 (de) * 1980-11-04 1982-06-09 E. Dold & Söhne KG, 7743 Furtwangen Taste
US4527030A (en) * 1980-11-06 1985-07-02 Preh Elektrofeinmechanische Werke, Jakob Preh Nachf., Gmbh & Co. Keyboard
USRE32419E (en) * 1981-03-16 1987-05-12 Engineering Research Applications, Inc. Molded keyboard and method of fabricating same
EP0074315A3 (en) * 1981-09-01 1983-10-05 La Telemecanique Electrique Hermetically sealed, modular, tactile keyboard
US4440992A (en) * 1982-03-03 1984-04-03 Amp Incorporated Low profile keyboard switch actuating assembly
WO1984001051A1 (en) * 1982-08-30 1984-03-15 Ericsson Telefon Ab L M Mechanism in keys for keyboards
US4677268A (en) * 1983-03-28 1987-06-30 The Gates Corporation Elastomeric switch control device
US4705925A (en) * 1985-05-30 1987-11-10 Siemens Aktiengesellschaft Key module with key member retained by swing members
US4997998A (en) * 1987-10-26 1991-03-05 Preh, Elektrofeinmechanische Werke Jakob Preh, Nachf. Gmbh & Co. Key cap for a keyboard
DE3736116A1 (de) * 1987-10-26 1989-05-11 Preh Elektro Feinmechanik Tastenkappe fuer eine tastatur
EP0405775A3 (en) * 1989-06-29 1992-04-22 Ing. C. Olivetti & C., S.P.A. Contact-type keyboard
US5214256A (en) * 1991-02-27 1993-05-25 Ralph Ipcinski Membrane type switch with improved elastomeric actuator including a cap mounted in an actuator depression
US5310973A (en) * 1991-10-08 1994-05-10 Silitek Corporation Structure of key switch
US5358344A (en) * 1992-09-01 1994-10-25 Key Tronic Corporation Keyboard with full-travel, self-leveling keyswitches
US5422447A (en) * 1992-09-01 1995-06-06 Key Tronic Corporation Keyboard with full-travel, self-leveling keyswitches and return mechanism keyswitch
US5389757A (en) * 1993-06-15 1995-02-14 Digital Equipment Corporation Elastomeric key switch actuator
EP0753197A4 (en) * 1994-03-28 1998-08-12 Ericsson Ge Mobile Inc KEY ARRANGEMENT AND KEYBOARD WITH DEVICE FOR WITHDRAWING AND STABILIZING A KEY
US5905235A (en) * 1995-05-27 1999-05-18 Nokia Mobile Phones, Ltd. Key assembly
US5950810A (en) * 1997-02-15 1999-09-14 Hon Hai Precision Ind. Co., Ltd. Elastic apparatus for a keyswitch key of a keyboard and the keyswitch key using the same
US20060086599A1 (en) * 2004-10-22 2006-04-27 Intergraph Hardware Technologies Company Tactile feedback plunger switch
WO2006047016A1 (en) * 2004-10-22 2006-05-04 Intergraph Hardware Technologies Company Tactile feedback plunger switch
US7326869B2 (en) 2004-10-22 2008-02-05 Intergraph Hardware Technologies Company Tactile feedback plunger switch
US20090001554A1 (en) * 2007-06-26 2009-01-01 Infineon Technologies Ag Semiconductor device
US7683477B2 (en) * 2007-06-26 2010-03-23 Infineon Technologies Ag Semiconductor device including semiconductor chips having contact elements
US20120160645A1 (en) * 2009-07-07 2012-06-28 Eltek S.P.A. Switch for vehicles
US20130116050A1 (en) * 2011-11-04 2013-05-09 Target Brands, Inc. Transaction product with selectively illuminated buttons
US8647203B2 (en) * 2011-11-04 2014-02-11 Target Brands, Inc. Transaction product with selectively illuminated buttons
EP3045080A4 (en) * 2013-09-10 2017-04-19 Fujikura Ltd. Seat device

Also Published As

Publication number Publication date
SE383665B (sv) 1976-03-22
IT977943B (it) 1974-09-20
GB1375333A (enrdf_load_html_response) 1974-11-27
CA987715A (en) 1976-04-20
DE2309041A1 (de) 1973-09-06
DE2309041B2 (de) 1976-11-04
JPS48104082A (enrdf_load_html_response) 1973-12-26
FR2174938B1 (enrdf_load_html_response) 1977-12-23
JPS5326661B2 (enrdf_load_html_response) 1978-08-03
NL7202909A (enrdf_load_html_response) 1973-09-07
FR2174938A1 (enrdf_load_html_response) 1973-10-19

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