DE3031484A1 - Snap action push button switch for printed circuit - applies pressure to resilient film with conductive coating in region of contacts - Google Patents

Snap action push button switch for printed circuit - applies pressure to resilient film with conductive coating in region of contacts

Info

Publication number
DE3031484A1
DE3031484A1 DE19803031484 DE3031484A DE3031484A1 DE 3031484 A1 DE3031484 A1 DE 3031484A1 DE 19803031484 DE19803031484 DE 19803031484 DE 3031484 A DE3031484 A DE 3031484A DE 3031484 A1 DE3031484 A1 DE 3031484A1
Authority
DE
Germany
Prior art keywords
push button
button switch
printed circuit
circuit board
switch according
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.)
Ceased
Application number
DE19803031484
Other languages
German (de)
Inventor
Ludwig Kronmeister
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.)
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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 Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Priority to DE19803031484 priority Critical patent/DE3031484A1/en
Publication of DE3031484A1 publication Critical patent/DE3031484A1/en
Ceased 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
    • H01H13/78—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 characterised by the contacts or the contact sites
    • H01H13/785—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 characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
    • 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
    • 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
    • H01H13/703—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 spacers between contact carrying layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/032—Conductive polymer; Rubber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/032—Conductive polymer; Rubber
    • H01H2201/036—Variable resistance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/04—Details of printed conductors
    • H01H2207/044—Resist layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/014—Layers composed of different layers; Lubricant in between
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/018—Layers flat, smooth or ripple-free
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2211/00—Spacers
    • H01H2211/026—Spacers without separate element
    • H01H2211/028—Contacts in depressions of layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2211/00—Spacers
    • H01H2211/026—Spacers without separate element
    • H01H2211/032—Pressure sensitive layer on contacts
    • 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
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/016—Pressure reduction membrane; Spreader layer

Abstract

The press button switch operating with a snap action, mounted above a printed circuit plate (1) with contact paths (7) to be bridged by the switch, has a resilient mat (3) over the printed circuit plate. Above this is a plastics layer (2) with a domed part (4) under the operating button (6). Between this layer and the button is a further protective resilient layer (5). The resilient mat, which is of rubber or plastics, is also conductive in the region of the contact paths. The mat can incorporate recesses (8) with the inside surface (9) covered with a electrically conductive coating to bridge the contacts when the button is pressed. The printed circuit is separated from the switch components, and forms a base support. It can also have electrical components attached.

Description

DRUCKTASTENSCHALTER Beschreibung Die Erfindung bezieht sich auf einen Drucktastenschalter mit Schnappcharakteristik, bei dem eine mit mehreren domförmigen Auswölbungen versehene dünne Kunststoffolie mittels je einem über den Auswölbungen angeordneten Tastenknopf verformt wird, und hierbei wenigstens zwei Kontaktbahnen einer gedruckten Leiterplatte kontaktierbar sind. PUSH BUTTON SWITCHES Description The invention relates to a Pushbutton switches with snap-action characteristics, in which one with several dome-shaped Thin plastic film provided with bulges by means of one over the bulges arranged key button is deformed, and here at least two contact tracks a printed circuit board can be contacted.

Es sind bereits Drucktasteneinheiten bekannt, die eine mit Leiterbahnen versehene Deckfolie aufweisen, wobei diese Auswölbungen besitzt, die auch als "Schaltfrosch" bezeichnet werden. Die Deckfolie ist über einer weiteren Kontaktleiterplatte angeordnet, die Kontaktstellen unterhalb den Auswölbungen der Deckfolie trägt. Eine isolierende Zwischenlage trennt die Kontakt-Leiterplatte von der mit "Schaltfröschen" und Leiterbahnen versehenen flexiblen Deck folie.There are already known push button units, one with conductor tracks have provided cover sheet, this has bulges, also known as "Schaltfrosch" are designated. The cover film is arranged over another contact circuit board, the contact points below the Bulges of the cover film carries. An insulating intermediate layer separates the contact circuit board from the one marked with "switching frogs" and flexible cover film provided with conductor tracks.

Die Zwischenlage weist an den Stellen, an denen später ein elektrischer Kontakt geschlossen werden soll, Öffnungen auf.The intermediate layer points at the points where an electrical Contact is to be closed, openings open.

Wird ein "Schaltfrosch" betätigt, so entsteht eine elektrisch leitende Verbindung zwischen den auf der Rückseite des *Schaltfrosches" aufgebrachten Leiterbahnen und der Kontakt-Leiterplatte. Über der Deck folie befindet sich ein Abdeckrahmen, in den einzelne aus Kunststoff gespritzte Drucktastenknöpfe eingelegt sind. Alle diese Einzelteile sind als kompakte Einheit zusammengefaßt, wobei diese noch zusätzliche Befestigungs- und Abdeckteile aufweist.If a "switching frog" is actuated, an electrically conductive one is created Connection between the conductor tracks on the back of the * switching frog " and the contact circuit board. There is a cover frame above the cover film, in which individual pushbutton buttons molded from plastic are inserted. All these items are combined as a compact unit, with this additional Has fastening and cover parts.

Nachteilig ist bei den bekannten Aufbauten von Drucktastenschaltern, daß durch Verwendung verschiedener Leiterplatten (Deckfolien- und Kontakt-Leiterplatte) ein erheblicher Aufwand entsteht und der Drucktastenschalter nicht ohne besondere Vorkehrungen auf einer bereits im Gerät vorhandenen und mit anderen Bauteilen bestückten Leiterplatten aufsetzbar ist.The disadvantage of the known structures of pushbutton switches that by using different circuit boards (cover foil and contact circuit board) a considerable effort arises and the push button switch is not without special Take precautions on an already existing in the device and equipped with other components Printed circuit boards can be placed.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Drucktastenschalter zu schaffen, dessen Aufbau möglichst einfach ist und der auf jede beliebige Leiterplatte gesetzt werden kann, ohne daß mehrere Folienteile mit aufgebrachten Leiterbahnen erforderlich sind.The invention is therefore based on the object of a push button switch to create the structure of which is as simple as possible and which can be used on any printed circuit board can be set without several foil parts with applied conductor tracks required are.

Diese Aufgabe ist bei einem Drucktastenschalter der im Oberbegriff des Anspruchs 1 definierten Gattung gemäß der Erfindung durch die Merkmale im Kennzeichnungsteil des Anspruchs 1 gelöst.In the case of a pushbutton switch, this task is the one in the generic term of claim 1 defined genus according to the invention by the features in the characterizing part of claim 1 solved.

Die Erfindung wird anhand der Zeichnungen näher erläutert. Es zeigt Fig. 1 eine schematische Ansicht eines Tastenschalters im Schnitt, Fig. 2 und Fig. 3 einen geringfügig veränderden Aufbau der Fig. 1.The invention is explained in more detail with reference to the drawings. It shows Fig. 1 is a schematic view of a key switch in section, Fig. 2 and Fig. 3 shows a slightly modified structure from FIG. 1.

Die Fig. 1 zeigt in schematischer Darstellung eine Teilansicht im Schnitt eines Drucktasten schalters gem. der Erfindung. Der Drucktastenschalter besteht im wesentlichen aus einer gedruckten Leiterplatte 1, einer Kunststoffolie 2 und einer zwischen beiden Teilen liegenden elastischen Matte 3. Die Kunststoffolie weist nach der Darstellung eine domförmige Auswölbung 4 auf. Über der Auswölbung 4 der Kunststoffolie befindet sich eine elastische Gummi- oder Kunststoffplatte 5. Weiterhin ist über der gleichen Stelle ein Tastenknopf 6 ungeordnet.Fig. 1 shows a schematic representation of a partial view in Section of a push button switch according to the invention. The push button switch consists essentially of a printed circuit board 1, a plastic film 2 and an elastic mat 3 between the two parts. The plastic film has a dome-shaped bulge 4 according to the illustration. Above the bulge 4 of the plastic film is an elastic rubber or plastic plate 5. Furthermore, a key button 6 is disordered above the same point.

Die Gummiplatte 5 dient zur Druckverteilung des im Bedarfsfalle ausgeübten Tastenknopfdruckes auf die domförmige Auswölbung 4 der Kunststoffolie 2. Auf der Leiterplatte 1 sind wenigstens zwei meist gegenuberliegende Kontaktbahnen 7 aufgebracht. Über den Kontaktbahnen 7 weist die elastische Matte 3 eine Ausnehmung 8 auf, wobei die Matte 3 aus Gummi oder Kunststoff gefertigt und vorwiegend als Formteil ausgebildet ist. Im Inneren der Ausnehmung 8 ist eine elektrisch leitende Schicht 9 so aufgebracht, daß im Ruhezustand des Tastenknopfes ein geringer Abstand zu den Kontaktbahnen 7 der Leiterplatte 1 gewährleistet ist. Die leitende Schicht 9 kann aufgedruckt oder in Form einer Metallfolie in die Ausnehmung eingelegt werden.The rubber plate 5 serves to distribute the pressure exerted when necessary Press the button on the dome-shaped bulge 4 of the plastic film 2. On the Circuit board 1, at least two mostly opposite contact tracks 7 are applied. Above the contact tracks 7, the elastic mat 3 has a recess 8, wherein the Mat 3 made of rubber or plastic and mainly designed as a molded part is. In the interior of the recess 8, an electrically conductive layer 9 is applied in such a way that that in the idle state of the key button a small distance from the contact tracks 7 the circuit board 1 is guaranteed. The conductive layer 9 can be printed or be inserted into the recess in the form of a metal foil.

Wird nun ein leichter Druck auf den Tastenknopf 6 ausgeübt, so überträgt sich dieser über die Gummiplatte 5 gleichmäßig auf die domförmige Auswölbung 4 der Kunststoffolie und der elastischen Matte 3. Die Auswölbung 4 weist eine Schnappcharakteristik auf und wird daher auch "Schaltfrosch" genannt. Schnappt die Auswölbung in Richtung Leiterplatte durch, so drückt diese auf die elastische Matte 3, wodurch die beiden Kontaktbahnen 7 durch die inzwischen aufliegende leitende Schicht 9 überbrückt werden, und an dieser Stelle der Drucktasten schalter elektrisch geschlossen ist. Wird der Druck von dem Tastenknopf 6 weggenommen, so schnappt die Auswölbung 4 in ihre Ausgangslage zurück und die Kontaktbrücke zwischen den Kontaktbahnen 7 wird aufgehoben Für den praktischen Einsatz sind verschiedene Schaltkombinationen in einfachster Weise durch entsprechende Gestaltung der Kontaktbahnen 7 möglich. Weiterhin sind Drucktastenschalter nach dem geschilderten Aufbau vorwiegend als Flächendrucktastenschalter mit einer bedarfsweise abgestimmten Schalter-bzw. Tastenknopfzahl ausgeführt.If a slight pressure is now exerted on the key button 6, the data is transmitted This is evenly on the rubber plate 5 on the dome-shaped bulge 4 of the Plastic film and the elastic mat 3. The bulge 4 has a snap characteristic on and is therefore also called "switching frog". Snap the bulge towards Printed circuit board through, so this presses on the elastic mat 3, whereby the two Contact tracks 7 are bridged by the conductive layer 9 that is now on top, and at this point the pushbutton switch is electrically closed. Will the Pressure removed from the key button 6, the bulge 4 snaps into its starting position back and the contact bridge between the contact tracks 7 is canceled for the practical use are different switching combinations in the simplest possible way corresponding design of the contact tracks 7 possible. Farther are pushbutton switches based on the structure described, primarily as flat pushbutton switches with a switch or switch matched as required. Number of buttons executed.

Die Fig. 2 zeigt einen Drucktasten schalter gemäß der Erfindung, bei den die elastische Matte 3 aus elektrisch leitendem Gummi hergestellt ist, und somit das Aufbringen der leitenden Schicht in der Ausnehmung 8 entfällt. Bei diesem Aufbau ist eine Isolierung für den die Kontaktbahn 7 verbindenen Leitern erforderlich. Diese Isolierung kann in einfachster Weise durch den üblicherweise bereits auf die gedruckte Schaltungsplatte aufgebrachten Decklack übernommen werden.Fig. 2 shows a push button switch according to the invention, at that the elastic mat 3 is made of electrically conductive rubber, and thus the application of the conductive layer in the recess 8 is omitted. With this structure insulation is required for the conductors connecting the contact track 7. This isolation can be done in the simplest way by the usually already on the printed circuit board applied top coat.

Nch Fig. 3 ist ein Ausführungsbeispiel dargestellt, bei dem die elastische Matte 3 aus einer Gummimatte hergestellt ist, die erst bei einem Oberflöchendruck ausreichend elektrisch leitfähig wird. Hierdurch entfällt zusätzlich zur Ausführung nach Fig. 2 die Ausnehmung 8 des Drucktasten schalters sowie die Isolierung für die Zuleitung der Kontaktbahnen 7. Gummimatten, die ausreichend elektrisch leitfähig sind oder erst durch Druck eine ausreichende elektrische Leitfähigkeit erhalten, sind hinreichend bekannt und bedürfen keiner weiteren Erläuterung.Nch Fig. 3 shows an embodiment in which the elastic Mat 3 is made from a rubber mat, which only occurs when there is a surface pressure becomes sufficiently electrically conductive. This also eliminates the need for execution According to Fig. 2, the recess 8 of the push button switch and the insulation for the supply line of the contact tracks 7. rubber mats that are sufficiently electrically conductive are or only obtain sufficient electrical conductivity through pressure, are well known and do not require any further explanation.

Claims (9)

DRUCKTASTENSCHALTER Patentansprüche 0Elektrischer Drucktasten schalter mit Schnappcharakteristik, bei dem eine mit mehreren domförmigen Auswölbungen versehene dünne Kunststoffolie mittels je einem über den Auswölbungen angeordneten Tastenknopf verformt wird, und hierbei wenigstens zwei Kontaktbahnen einer gedruckten Leiterplatte kontaktierbar sind, d a d u r c h g e k e n n z e i c h n e t , daß zwischen Leiterplatte (1) und Kunststoffolie (2) eine elastische Matte (3) eingelegt ist, die teilflächig oder ganzflächig oder bei Druck elektrisch leitfähig ist. PUSH BUTTON SWITCHES Patent claims 0Electric push button switches with snap-in characteristics, one of which is provided with several dome-shaped bulges thin plastic film by means of a key button arranged over the bulges is deformed, and here at least two contact tracks of a printed circuit board can be contacted, that is, between the printed circuit board (1) and plastic film (2) an elastic mat (3) is inserted, the part of the surface or is electrically conductive over the entire surface or under pressure. 2. Drucktastenschalter nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die elastische Matte (3) aus Gummi oder Kunststoff gefertigt ist. 2. Push button switch according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the elastic mat (3) is made of rubber or plastic is. 3. Drucktastenschalter nach den Ansprüchen 1 und 2, d a d u r c h g e k e n n z e i c h n e t , daß die elastische Matte (3) ein Gummi- oder Kunststoff-Formteil ist. 3. Push button switch according to claims 1 and 2, d a d u r c h it is noted that the elastic mat (3) is a molded rubber or plastic part is. 4. Drucktastenschalter nach den Ansprüchen 1 bis 3, d d a d u r c h g e k e n n z e i c h n e t , daß die elastische Matte (3) über den Kontaktbahnen (7) der Leiterplatte (1) Ausnehmungen (8) aufweist. 4. Push button switch according to claims 1 to 3, d d a d u r c h e k e n n n e i c h n e t that the elastic mat (3) over the contact tracks (7) of the circuit board (1) has recesses (8). 5. Drucktastenschalter nach den Ansprüchen 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , daß die Ausnehmungen (8) im Innern eine elektrisch leitende Schicht (9) aufweisen. 5. Push button switch according to claims 1 to 4, d a d u r c h it is noted that the recesses (8) inside an electrically have conductive layer (9). 6. Drucktastenschalter nach den Ansprüchen 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , daß die Leiterplatte (1) als stabile Trägerplatte ausgebildet ist. 6. Push button switch according to claims 1 to 5, d a d u r c h it is noted that the printed circuit board (1) acts as a stable carrier plate is trained. 7. Drucktasten schalter nach den ansprüchen 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , daß die Fläche der Leiterplatte unabhängig von der des Drucktasten schalters ist. 7. Push button switch according to claims 1 to 6, d a d u r c it is noted that the area of the printed circuit board is independent of the of the push button switch is. 8. Drucktastenschalter nach den Ansprüchen 1 bis 7, d a d u r c h g e k e n n z e i c h n e t , daß die Leiterplatte (1) mit beliebigen elektrischen und mechanischen Bauteilen bestückbar ist. 8. Push button switch according to claims 1 to 7, d a d u r c h it is noted that the printed circuit board (1) can be connected to any electrical and mechanical components can be fitted. 9. Drucktastenschalter nach den Ansprüchen 1 bis 8, d a d u r c h g e k e n n z e i c h n e t , daß zwischen dem Tastenknopf (6) und der Kunststoffolie (2) eine dünne sehr elastische Gummi- oder Kunststoffplatte (5) eingelegt ist. 9. Push button switch according to claims 1 to 8, d a d u r c h It is not noted that between the key button (6) and the plastic film (2) a thin, very elastic rubber or plastic plate (5) is inserted. Beschreibungdescription
DE19803031484 1980-08-21 1980-08-21 Snap action push button switch for printed circuit - applies pressure to resilient film with conductive coating in region of contacts Ceased DE3031484A1 (en)

Priority Applications (1)

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DE19803031484 DE3031484A1 (en) 1980-08-21 1980-08-21 Snap action push button switch for printed circuit - applies pressure to resilient film with conductive coating in region of contacts

Applications Claiming Priority (1)

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DE19803031484 DE3031484A1 (en) 1980-08-21 1980-08-21 Snap action push button switch for printed circuit - applies pressure to resilient film with conductive coating in region of contacts

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DE3031484A1 true DE3031484A1 (en) 1982-11-04

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9216956U1 (en) * 1992-12-12 1993-02-11 Skultety, Ivan, 5000 Koeln, De
WO2001041171A1 (en) * 1997-10-01 2001-06-07 Armstrong Brad A Variable-conductance sensor with elastomeric dome-cap
US6310606B1 (en) 1992-03-05 2001-10-30 Brad A. Armstrong Multi-plane sheet connected sensors
US6344791B1 (en) 1998-07-24 2002-02-05 Brad A. Armstrong Variable sensor with tactile feedback
DE10065806C1 (en) * 2000-12-30 2002-02-21 Helag Electronic Gmbh Electromechanical switch with snap-action element used for operation of switch dome of switch mat
US6404584B2 (en) 1997-10-01 2002-06-11 Brad A. Armstrong Analog controls housed with electronic displays for voice recorders
US6415707B1 (en) 1997-10-01 2002-07-09 Brad A. Armstrong Analog controls housed with electronic displays for coffee makers
US6456778B2 (en) 1997-10-01 2002-09-24 Brad A. Armstrong Analog controls housed with electronic displays for video recorders and cameras
US6470078B1 (en) 1997-10-01 2002-10-22 Brad A. Armstrong Analog controls housed with electronic displays for telephones
US6532000B2 (en) 1997-10-01 2003-03-11 Brad A. Armstrong Analog controls housed with electronic displays for global positioning systems
US6563415B2 (en) 1996-07-05 2003-05-13 Brad A. Armstrong Analog sensor(s) with snap-through tactile feedback
US8674932B2 (en) 1996-07-05 2014-03-18 Anascape, Ltd. Image controller

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DE2338746A1 (en) * 1973-07-31 1975-02-13 Licentia Gmbh Key switch for program stores in radio and TV receivers - has electrodes on two opposite supports in switch pressure region with associated conductors
DE2451294A1 (en) * 1973-10-31 1975-05-07 Essex International Inc CIRCUIT BOARD AND METHOD OF MANUFACTURING A CIRCUIT BOARD
DE2902892A1 (en) * 1978-01-26 1979-08-02 Shinetsu Polymer Co ELASTOMER FILM WITH ELECTRIC CONTACT PIECES
DE2922276A1 (en) * 1978-06-08 1979-12-13 Nissan Motor COUNTER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2338746A1 (en) * 1973-07-31 1975-02-13 Licentia Gmbh Key switch for program stores in radio and TV receivers - has electrodes on two opposite supports in switch pressure region with associated conductors
DE2451294A1 (en) * 1973-10-31 1975-05-07 Essex International Inc CIRCUIT BOARD AND METHOD OF MANUFACTURING A CIRCUIT BOARD
DE2902892A1 (en) * 1978-01-26 1979-08-02 Shinetsu Polymer Co ELASTOMER FILM WITH ELECTRIC CONTACT PIECES
DE2922276A1 (en) * 1978-06-08 1979-12-13 Nissan Motor COUNTER

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9081426B2 (en) 1992-03-05 2015-07-14 Anascape, Ltd. Image controller
US6310606B1 (en) 1992-03-05 2001-10-30 Brad A. Armstrong Multi-plane sheet connected sensors
DE9216956U1 (en) * 1992-12-12 1993-02-11 Skultety, Ivan, 5000 Koeln, De
US8674932B2 (en) 1996-07-05 2014-03-18 Anascape, Ltd. Image controller
US6563415B2 (en) 1996-07-05 2003-05-13 Brad A. Armstrong Analog sensor(s) with snap-through tactile feedback
US6496449B1 (en) 1997-10-01 2002-12-17 Brad A. Armstrong Analog controls housed with electronic displays for clocks
US6538638B1 (en) 1997-10-01 2003-03-25 Brad A. Armstrong Analog controls housed with electronic displays for pagers
US6456778B2 (en) 1997-10-01 2002-09-24 Brad A. Armstrong Analog controls housed with electronic displays for video recorders and cameras
US6470078B1 (en) 1997-10-01 2002-10-22 Brad A. Armstrong Analog controls housed with electronic displays for telephones
WO2001041171A1 (en) * 1997-10-01 2001-06-07 Armstrong Brad A Variable-conductance sensor with elastomeric dome-cap
US6404584B2 (en) 1997-10-01 2002-06-11 Brad A. Armstrong Analog controls housed with electronic displays for voice recorders
US6415707B1 (en) 1997-10-01 2002-07-09 Brad A. Armstrong Analog controls housed with electronic displays for coffee makers
US6518953B1 (en) 1997-10-01 2003-02-11 Brad A. Armstrong Analog controls housed with electronic displays for remote controllers having feedback display screens
US6529185B1 (en) 1997-10-01 2003-03-04 Brad A. Armstrong Analog controls housed with electronic displays for electronic books
US6532000B2 (en) 1997-10-01 2003-03-11 Brad A. Armstrong Analog controls housed with electronic displays for global positioning systems
US6344791B1 (en) 1998-07-24 2002-02-05 Brad A. Armstrong Variable sensor with tactile feedback
US6504527B1 (en) 1999-05-11 2003-01-07 Brad A. Armstrong Analog controls housed with electronic displays for computer monitors
US6559831B1 (en) 1999-05-11 2003-05-06 Brad A. Armstrong Analog controls housed with electronic displays for personal digital assistants
US6469691B1 (en) 1999-05-11 2002-10-22 Brad A. Armstrong Analog controls housed with electronic displays for hand-held web browsers
DE10065806C1 (en) * 2000-12-30 2002-02-21 Helag Electronic Gmbh Electromechanical switch with snap-action element used for operation of switch dome of switch mat

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