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4931601 |
Pressure switch having internal vent chamber
Layers of a thin, electrically insulating material are bonded together to form a switch. The bottom layer of the switch has electrically conductive areas aligned with openings through a second...
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4929804 |
Push button switch
A push button switch which may be used, for example, as a zooming switch in a video camera, having a uniform electrical resistance/applied pressure characteristic and which can be manufactured...
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4926172 |
Joystick controller
A joystick controller apparatus comprises a lever mounted for pivotal motion in at least two directions, a guide defining a preselected shift pattern for the lever, and an indicating arrangement...
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4924046 |
Trim switch
A trim switch control for aligning a motor on a boat. The switch includes a housing in which a switch body is supported. A bridging member includes side lobes having domed contact engaging...
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4920237 |
Membrane keyboards
A membrane keyboard has two spaced flexible membranes (1 and 2) carrying contact pad assemblies. Acoustic pads (15) of expanding ink are printed on the top surface of the upper membrane (2) between...
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4920342 |
Membrane switchcores with high resisitivity ink circuits
A decodable alphanumeric membrane switchcore (12, 12a, 12b,100) of at least 36 key cells (55,122) including spaced circuits (16,17;105,115) having row and column traces (20-34, 40-47,51;106,116)...
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4920343 |
Capacitive keyswitch membrane with self contained sense-to-ground capacitance
A membrane capacitive keyboard of the type including a first flexible dielectric sheet and a second dielectric sheet having electrically conductive patterns thereon which form an array of...
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4918264 |
Actuating mechanism and multiposition rubber or membrane switch device
A switching device comprising a rubber switch, an operating member displaceable between at least two operative positions and a neutral position, and a cooperating member shiftable between the at...
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4914999 |
Keyboard assembly for forming keyboard apparatus of electronic musical instrument
A keyboard assembly for forming a keyboard apparatus of an electronic musical instrument, including a combination of at least two key units each having a plurality of key members and an elongated...
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4916262 |
Low-profile, rubber keypad
A low-profile rubber keypad with good tactile feel and illuminability includes a plurality of layers adhesively bonded to one another. The top layer of the keypad is a silicone rubber overlay...
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4916275 |
Tactile membrane switch assembly
A tactile membrane switch assembly that includes at least one switch site having inner and outer contacts and a snap dome switch wherein the assembly includes a flexible substrate of electrically...
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4901614 |
Keyboard apparatus of electronic musical instrument
A keyboard apparatus of an electronic musical instrument includes keys, mass members, and springs. Each key can pivot about a first pivot fulcrum. Each mass member can pivot about a second pivot...
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4901074 |
Glass membrane keyboard switch assembly for domestic appliance
A keyboard switch assembly includes a thin, flexible, glass top layer forming a membrane. Disposed on an inner surface of the glass membrane is a first conductive layer forming an electrode....
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4899063 |
Power window switch for an automobile
A power window switch for an automobile having a switching mechanism which includes a fixed contact plate and a circuit board secured within the inside of a resinous casing, the casing including a...
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4896003 |
Multi-position electrical switch
A multi-directional switch which is utilized for completing selected ones of a number of different electrical circuits is placed in a housing in which the different electrical circuits to be...
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4894493 |
Membrane touch control panel assembly for an appliance with a glass control panel
An appliance with a glass control panel is provided with a membrane touch control panel assembly which simulates the appearance of a glass capacitive touch panel, and which can tolerate relatively...
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4894499 |
Electric push-button switch
The electric push-button switch comprises a housing portion and a linearly moveable push-button portion. Guide columns at the housing portion and the push-button portion attain accurate linear...
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4892981 |
Snap-in modular keypad apparatus
A modular snap-in keypad apparatus includes a planar frame member having a plurality of button accommodating apertures and a plurality of mounting posts extending therefrom. An elastomeric key...
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4892999 |
Calculator
A see-through calculator or memory device comprises a transparent base, a see-through printed circuit board and a transparent switch panel. Liquid is housed in a cavity in the base, formed by...
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4882471 |
Electronic equipment using a cover
Electronic equipment includes a keyboard portion arranged on an electronic equipment body, for inputting data, a solar cell, arranged on the electronic equipment body, for supplying power, a cover...
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4882581 |
Keyboard for a portable data terminal
The portable terminal keyboard includes silicone rubber mixed with phosphorescent material used on the external exposed surface of the keyboard and conventional silicone rubber used for the moving...
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4877925 |
Multi-stage push button switch device
A multi-stage push button switch device includes a plurality of first and second push button members fixedly coupled to a base plate. Each first and second push button member includes a button...
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4876415 |
Low cost keyboard with key tops defining surface of curved profile
A keyboard having a plurality of rows of depressable keys whose key tops define a surface of concave profile curved about an axis. The concave profile is achieved with key tops and key stems of...
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4876461 |
Self-referencing capacitive key cell structure and switchcore matrices formed therefrom
In a capacitive switchcore of the type in which each key cell includes a contact switch in series with a key cell capacitor, an improvement is disclosed in which an intracell coactive loading...
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4864085 |
Keyboard switch
A membrane switch sheet is disposed on a base plate and an adhesive layer is formed all over the membrane switch sheet. A positioning sheet, which has positioning holes respectively corresponding...
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4864084 |
Membrane-type touch panel
In a membrane-type touch panel including a pair of circuit layers having facing conductive circuit patterns normally separated by spacers defining voids through which regions of the circuit...
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4862499 |
Deformable membrane keypad assembly for public telephones
A telephone keypad assembly including a one-piece deformable membrane for sealing the keypad assembly from the environment. The deformable membrane has an upper surface for mating with keypad...
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4857887 |
Laminated piezoelectric keyboard
The keyboard comprises piezoelectric crystal elements arranged between laminates provided with conducting strips. A voltage is generated when pressure is applied to the elements. The keyboard is...
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4857683 |
Membrane switchcores with key cell contact elements connected together for continuous path testing
Flexible membrane switchcores (100, 100a,100b) including a conductive first circuit (180) having first traces (171-178;194;196) and a conductive second circuit (185) having second traces...
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4855548 |
Keybutton guide assembly for a keyboard
A keybutton guide assembly for a full sized keyboard with full travel keybuttons has a structure including a keybutton having a spring actuator engaging a spring finger at a location spaced away...
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4851618 |
Keyboard
A keyboard comprises a base plate carrying contact circuits and provided with a plurality of holes, and a key holding frame integrally provided with key housings for receiving keys, vertically...
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4847452 |
Key switch structure for a thin-gage electronic device
A key switch structure is provided which improves the reliability of the elasticity of the switch. A front film has a metal front panel adhered to its underside. A switch panel pattern is formed in...
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RE32977 |
Key-holding structure of keyboard with curved operating surface of keys
A keyboard assembly having key-switches, comprising a key holder plate supporting multiple keys in plural rows and movably across the thickness of the plate, and further comprising an upper casing...
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4845319 |
Key switch assembly
A key switch assembly for direct mounting on a PCB or similar substrate. The key switch has a body with depending mounting pin having retainers thereon to secure the key switch at apertures in the...
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4845323 |
Flexible tactile switch
A conformal electrical sensor switch for determining the presence or absence of weight, such as a person in a bed, comprises flexible, parallel sensing strips positioned to make contact when...
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4839474 |
Switches and keyboards
A low profile switch or keypad has one or more touch buttons of circular or polygonal shape in plan formed integrally with and raised from a surrounding membrane of elastomeric material by a wall...
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4837412 |
Keyboard of a membrane contact type
A keyboard of a membrane contact type comprises a membrane contact unit having movable contacts, fixed contacts disposed respectively opposite to the movable contacts, and a printed wiring board...
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4837411 |
Spring switch
An electrical switch assembly comprises a first, domed, flexible contact member plus at least one second, flexible, finger-type contact member positioned under the first contact member in normally...
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4836786 |
Demonstration calculator
A hand-held calculator for use in conducting classroom demonstrations of the operation thereof, including use of the operation instruction key means. The calculator comprises a frame, a keyboard...
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4831219 |
Keyboard
A keyboard including a plurality of key switches and a plurality of keys mounted slidably on the keyboard over the key switches, each key overlying one of the key switches and the top of each key...
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4831218 |
Universal binary keyboard system
A keyboard apparatus including a plurality of nested, identically configured, keys for use in computer keyboards, typewriters, electronic switches and the like. The keyboard apparatus preferably...
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4822959 |
Electrical switch having a snap-acting switch element
A switch element including a ribbon-type spring member having a plurality of interconnected inner and outer loops and stressed to cause the member to take a substantially dome-shaped configuration...
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4820887 |
Membrane keyboard blockout apparatus
A membrane keyboard blockout apparatus for a keyboard having an array of a plurality of flexible key members in respective ones of a plurality of apertures arranged in a grid forming the keyboard...
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4820908 |
Combined calculator and puzzle game device
A combined calculator and puzzle game device including a calculator cover-board which is provided with guide pieces confined to intersecting guide grooves. Game pieces which have projecting necks...
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4818829 |
Integrally molded composites of silicone rubber
Novel composite products formed by bonding a flowable elastomer, such as silicone rubber, to a transparent or translucent silicone rubber preform are described. These products have utility in the...
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4818827 |
Low force membrane switch
The invention is directed to a membrane switch comprising a first layer 30 of flexible insulating material and a second layer 50 having relatively inflexible characteristics, each layer 30, 50...
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4818828 |
Electronic keyboard
A full sized electronic keyboard with full travel keybuttons provides switches for controlling an electronic typewriter or for controlling other devices. The keyboard has a structure designed for...
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4814561 |
Elastic member for supporting a key top in a push button switch construction
An elastic key top construction for supporting a key top comprising a key top push or support section on which the key top is mounted, a projection disposed below the key top support section, a...
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4810860 |
Electronic instrument
An electronic instrument comprises a printed circuit substrate on which electrical parts are actually mounted, a frame placed on the front side of the printed circuit substrate and having openings...
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4809126 |
Electrostatic discharge proof keypad
A keypad which prevents electrostatic discharge from occurring in electronic equipment such as printers, computers and the like. The keypad includes a switch mechanism positioned on the circuit...
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