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| Number | Title | Issue Date |
| 8178808 | Breathable sealed dome switch assembly A sealed dome switch assembly is provided to allow air to flow between the interior and the exterior of the dome switch during the collapse and recovery of the resilient dome shell. The sealed dome switch assembly comprises at least one vent leading between the inte... | 05/15/2012 |
| 8089017 | Sealed dome switch for mobile electronic device A mobile electronic device has a dome switch assembly secured to the housing of the device, over a recess formed in the housing of device. The dome switch assembly has a substrate with a vent hole communicating between the recess of the housing and the space compris... | 01/03/2012 |
| 7902473 | Key switch with exhaust structure The present invention provides a key switch with an exhaust structure, which includes a keycap having a top surface and an inner surface with a cavity and an elastic member. The elastic member includes a protrusion and an elastic body. The protrusion is coupled with... | 03/08/2011 |
| 7687735 | Packaging structure for depression switches A packaging structure for depression switches includes an electronic substrate containing at least one switch electrode, a push-on switch located on the electronic substrate to connect the switch electrode to generate a command signal and a sealing member. The push-... | 03/30/2010 |
| 7348513 | Membrane switch A membrane switch solves the problem of requiring a spacing layer or spacers as in the prior art, and includes an upper membrane, a lower membrane. The upper membrane has an upper elastic tongue, an upper hollow portion formed around the upper elastic tongue, and a ... | 03/25/2008 |
| 7186939 | Movable contact unit and panel switch A small movable contact unit and a panel switch which prevent peeling from an edge even though the width between the edge of a base sheet and a movable contact is narrowed. The movable contact unit includes the movable contact and base sheet. The movable contact has... | 03/06/2007 |
| 7145092 | Keyboard structure A keyboard is disclosed comprising a rigid base member including at least a first surface; the base member including electrical circuitry structures, which structures define a plurality of connection zones on the first surface; the first surface of the base member i... | 12/05/2006 |
| 7132615 | Switchpad for a pushbutton switch assembly A switchpad for use within a pushbutton switch assembly including a web connecting a spacer and a contact support. ... | 11/07/2006 |
| 7129435 | Movable contact element and panel switch using the same Provided are a movable contact element used in a panel switch on the operation panel of various electronic devices and a panel switch using the movable contact element, which provide excellent operation feeling and simplify the production and integration processes. ... | 10/31/2006 |
| 7106222 | Keypad assembly A keypad assembly utilizes touch-detecting apparatus such as force sensors or touchpad assemblies for registering key presses. In exemplary embodiments, the keypad assembly is suitable for use in electronic devices such as a mobile telephones, calculators, hand-held... | 09/12/2006 |
| 7091952 | Liquid proof switch array Switch arrays such as keyboards are described. The switch arrays may include an array of dome spring elements. Each dome spring element may define a chamber, and a plurality of channels may interconnect the chambers of the dome spring elements such that each chamber... | 08/15/2006 |
| 7075020 | Push-on switch A two-step push-on switch sequentially operates first and second switches via a movable contact plate configured by a metal plate spring and fixed by an adhesive tape onto a circuit board. A spacer is placed around the movable contact plate. A continuous or disconti... | 07/11/2006 |
| 6982394 | Keysheet module The keysheet module has a flexible printed circuit board formed with dome-shaped depression switches on the upper surface thereof. Each of the depression switches comprises a first fixed contact, a second fixed contact surrounding the first fixed contact, a movable ... | 01/03/2006 |
| 6946611 | Keyboard switch with internal fluid containment network A keyboard switch with an internal air escape network, such as a series of channels or through holes, for containing air or fluid escaping from the switching cavities when a key is depressed. ... | 09/20/2005 |
| 6924447 | Waterproof structure of printed circuit board A waterproof structure is used with a printed circuit board, which is primarily composed of an upper layer membrane, a lower layer membrane, and an insulation layer, which are conjoined to one another. Besides, at least one first channel and second channel are provi... | 08/02/2005 |
| 6917007 | Metal dome sheet, its manufacturing method, and metal dome system In a metal dome sheet to be hermetically adhered to a plurality of metal domes disposed at electrodes on a substrate and to other portions of the substrate via an adhesive layer, the present invention provides an adhesive layer removed portion at a portion of the ad... | 07/12/2005 |
| 6909063 | Metal dome sheet in mobile communication terminal and keypad thereof A keypad of a mobile communication terminal includes a contact sheet having contacts preferably shaped as hemispherical domes which deflect to turn on/off switch contact point pairs on a printed circuit board. The contact sheet further includes band parts covering t... | 06/21/2005 |
| 6906275 | Movable contact unit, panel switch using the same and electronic equipment having the panel switch A movable contact unit including movable contacts localized in respective through holes of a base sheet formed from a flexible insulation substrate; a cover sheet formed from a flexible insulation substrate bonded on upper surface of the base sheet to hold respectiv... | 06/14/2005 |
| 6791480 | Method of preventing and/or alleviating repetitive use injury to electronic computer keyboard operator An electronic computer keyboard is constructed to provide the minimum keystroke resistance sufficient to prevent accidental switch closures otherwise resulting from the weight of the operator's fingers resting on the keys. This forces the operator to move his or her... | 09/14/2004 |
| 6768074 | Easily peelable sheet having contact plates and switch device employing the same A sheet having contact plates includes a strip-shaped peel sheet that is peeled while being fed for use, a spacer sheet stuck onto the peel sheet via an adhesive layer, an upper face sheet stuck onto an upper face of the spacer sheet via an adhesive layer, and conta... | 07/27/2004 |
| 6664901 | Keyboard input device A keyboard input device includes an elastic spring member bonded to a overcoat provided on a film substrate by an adhesive so that a movable contact part provided in the elastic spring member is disposed over a pair of fixed contact parts provided on the ... | 12/16/2003 |
| 6634090 | Method of production of series of a tactile contact units and tactile contact unit, and series of tactile contact units and a tactile contact unit produced by using the same method A method for production of series of tactile contact units and tactile contact unit for use in manipulating unit of a small-sized electronic device, capable of manufacturing inexpensive tactile contact units by curtailing the process, and series of tactil... | 10/21/2003 |
| 6610943 | Membrane switch venting arrangement for washing appliance A membrane switch incorporated in a control panel of a domestic washing appliance is vented through a labyrinth venting arrangement composed of a long, small diameter, twisting passage, including concentric arcuate sections and an intermediate portion. Th... | 08/26/2003 |
| 6600120 | Membrane switch arrangement with chamber venting There is provided a switch having a flexible upper member, that is substantially electrically non-conductive, having an inner surface with an upper contact area that is electrically conductive and connected to a circuit, and a lower member that is substan... | 07/29/2003 |
| 6593537 | Membrane switch A membrane switch fixes click springs at fixed positions and largely reduces the damage caused by dust and moisture affecting contact points. The membrane switch includes fixed contact points on a circuit board made from a film of resin material such as p... | 07/15/2003 |
| 6548778 | Sheet with plate springs and switch device using same A thin and inexpensive sheet with plate springs is provided which can prevent the entry of dust and other foreign matters and which is strong against static elasticity. One side of an adhesive sheet is studded with adhesive portions in a projected state, ... | 04/15/2003 |
| 6531671 | Membrane circuit board switch with a pressure regulating reservoir A membrane circuit board switch used in a keyboard for generating key-pressing signals. The membrane circuit board switch has an upper membrane circuit layer, a lower membrane circuit layer, and a plurality of switch units. Each switch unit has a predeter... | 03/11/2003 |
| 6509848 | Remote control device A remote control device for remotely controlling an AV (audio visual) device includes an analog switch (30) formed of an operating element (31 or 41) and a pressure-sensitive resistor (35) which outputs a signal with various levels depending upon a pressi... | 01/21/2003 |
| 6441330 | Keyboard circuit using conduits within a bus for air flow A thin film circuit includes a thin film switching circuit with an upper circuit layer including at least one upper joint, and a lower circuit layer including at least one lower joint corresponding to the upper joint. The lower circuit layer is set under ... | 08/27/2002 |
| 6144003 | Membrane switch A switch storing chamber (8) of a membrane switch is communicated with the exterior and no water droplet enters the switch storing chamber (8). At least one upper gas permeable chamber (5c) (5d) is formed between an upper membrane sheet (2) and a spacer s... | 11/07/2000 |
| 6066812 | Layered structure for keyswitch A layered structure for a keyswitch includes a lower flex circuit layer, an upper flex circuit layer and a spacer layer therebetween. A plurality of projecting flanges are arranged radially and extending from through holes formed in the spacer layer. The ... | 05/23/2000 |
| 5981890 | Touch-to-action structure of a key signal A touch-to-action structure of a key signal comprises a lower thin film circuit board, an upper thin film circuit board and a spacer. Wires and a plurality of electric connections are formed on the upper surface of the lower thin film circuit board. The u... | 11/09/1999 |
| 5901834 | Lighted switch illuminator and its fabrication method A lighted switch illuminator which solves a problem of a conventional device in that it was difficult to reduce its thickness and size because the electroluminescent (EL) layer functioning as an illuminator is adhered to a separate film click board. An EL... | 05/11/1999 |
| 5874700 | Switch mat This invention relates to a switch mat with key switches. In previously disclosed switch mats, switch chambers located under dome-shaped key caps were jointly vented. This affected key operation, and allowed soiling by dust and moisture. Here, each switch... | 02/23/1999 |
| 5374796 | Contact sensor with improved sensitivity A contact sensor apparatus with improved sensitivity is provided. A frame defining a surface upon which contact detection is desired has two electrically conductive sheets held in spaced parallel relationship by a plurality of electrically non-conductive ... | 12/20/1994 |
| 5310973 | Structure of key switch A key switch includes a switching member supported on a resilient member and connected to a key cap and driven by it to slide in a locating member. The switching member has two opposite, curved side plates caused to slide in the locating member along two ... | 05/10/1994 |
| 5247143 | Key switch A push button switch includes an elastic sheet member serving as a stopper of an operation member and an elastic projection. When the operation member abuts with the projection, it is elastically deformed to absorb abutment impact to thereby cost effectiv... | 09/21/1993 |
| 5228562 | Membrane switch and fabrication method A membrane switch (10) having a top membrane (12) with a lower conductive surface (16), a bottom membrane (14) with an upper conductive surface (18), and a dielectric intermediate circuit spacer (20) disposed therebetween. The intermediate circuit spacer ... | 07/20/1993 |
| 5228561 | Long traveling button switch with enhanced user feedback A pushbutton switch including a keycap having a keycap top and a keycap plunger, a retaining bezel for guiding the keycap plunger and limiting the displacement thereof, a deformable elastomeric switch button supporting a contact pad, and a printed circuit... | 07/20/1993 |
| 5218177 | Screened pattern causing gaps around keyboard membrane spacer hole to increase venting and reduced bounce First and second membranes carrying contacts located on opposing faces are separated by a third or spacer membrane having holes therein so that a circuit may be completed between the contacts when a force is applied to the first membrane. The first and se... | 06/08/1993 |
