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4598181 |
Laminate switch assembly having improved tactile feel and improved reliability of operation
A laminate switch assembly comprising dual dome switchplates providing improved tactile sensation good balance characteristics and able to maintain a low dynamic resistance throughout its life...
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4596905 |
Membrane keyboard construction
A membrane keyboard construction is provided and comprises two circuit layers, a spacer disposed and secured between the circuit layers and having an opening passing therethrough to permit the...
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4595804 |
Auxiliary keyboard
An auxiliary keyboard of generally U-shaped configuration for clamping onto a stand-alone computer keyboard. The auxiliary keyboard has a membrane provided with a series of touch-sensitive areas...
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4594481 |
Electronic touch pad key assembly with stroke amplifier
An electrical switch panel including a switch actuating assembly is disclosed for intermittently altering the electrical condition of a switch. A base member is formed to include a plurality of...
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4594482 |
Input element with improved appearance and reliability
An input element which comprises a pair of transparent substrates, of which at least one is flexible, each having electrodes of transparent electroconductive film on its surface, being arranged in...
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4582969 |
Slide guide construction push-type electric devices
A push-type electric device includes a case having an opening defined in a top wall thereof, and a control member slidably disposed in the case and movable therein for actuating the push-type...
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4582967 |
Key switch assembly
A key switch assembly for interposition between a PCB and a cover plate for actuating a contact element such as a snap dome. The key switch includes a body having a cantilever actuator arm hingedly...
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4580018 |
Switch device
A switch device comprises a chassis with a number of key-tops, a switch unit, and a support board, piled up in that order and coupled at their centers by one screw. Plural screws pass through...
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4575589 |
Switching contact arrangement, in particular for keyboards and a keyboard
The switching contact arrangement contains a support or base (1), above it a layer of at least two tracks approaching each other at an angle, one of which comprises a switching contact surface...
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4575601 |
Keyboard of the membrane type
There is disclosed an electrical signal input device suitable for use in a microwave oven or other household appliance for introducing a setting into those appliances through a simple one-touch...
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4570521 |
Electronic musical instrument with string-simulating switches
An electronic musical instrument includes a fingerboard having a plurality of switches which are player-actuated to produce musical tones through electronic tone-generating means. The fingerboard,...
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4571466 |
Spring unit for a keyboard
A spring unit for a keyboard comprises a base sheet having a specified number of openings perforated thereupon in accordance with a key layout and a number of dome-shaped spring members separated...
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4570039 |
Keyswitch structure
In a keyswitch structure, a number of recesses are formed in a lower case, and a projection with a flat top surface is formed inside each of the recesses. The recesses communicate with each other...
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4568918 |
Keyswitch with decoupling diode
A keyswitch for use with keyboards for connecting intersecting row and column wires of a circuit board for the keyboard has a decoupling diode for preventing the generation of false signals which...
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4567469 |
Matrix keyboard
In an improved multikey keyboard for inputting data into a computer, wherein pressing a key places in circuit the point of intersection of at least one row conductor and column conductor...
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4563550 |
Keyboard having low profile modular keys
A contact keyboard comprising a plurality of modular keys individually insertable in a base frame having feet adjustable in height in order to permit a variable inclination of the key plane. The...
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4562315 |
Capacitance membrane switch
A capacitance membrane switch (1) including first (64,68), second (52,58) and third capacitor plates (44-48) wherein the third capacitor plates consist of conductive adhesive.
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4560844 |
Key-holding structure of a keyboard with curved operating surface of keys
A keyboard having multiple key-switches, wherein a surface generally defined by top faces of keys of the key-switches is downwardly curved in a plane perpendicular to rows of the keys, comprising...
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4561002 |
Capacitive touch switch arrangement
A capacitive attenuator type touch switch cell arrangement employs a touch responsive pad or electrode and a receiver electrode of comparable surface area on opposing surfaces of a dielectric...
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4560845 |
Keyboard
A keyboard having multiple key-switches each comprising a key having a finger-pressed top face, a movable electrode and at least two stationary electrodes. The keyboard comprises a key holder plate...
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4559427 |
Keyboard system and module therefor
A keyboard system comprises a circuit board having a matrix of contact switches. A module comprises a matrix of keys in actuating correspondence with the contact switches. The keys are of a...
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4559426 |
Membrane switch and components having means for preventing creep
A membrane switch panel has patches of low creep material attached to the membrane at portions thereof which are subject to creep. Membrane switch panels may be incorporated in keyboards wherein...
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4558190 |
Input element
An input element comprises a pair of spread substrates each having an electroconductive film, the electroconductive surfaces, facing each other and a spacer disposed between said substrates to...
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4555600 |
Vandal-resistant shield for telephone keypad
A standard keypad comprises a rigid support plate having a front face and formed with an array of throughgoing apertures, respective push-buttons projecting at the apertures through the plate past...
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4554419 |
Touch selection panel for a vending machine
A touch-sensitive selection panel structure for a vending machine including a pressure-sensitive membrane-type switch contained between first and second polycarbonate panels comprising the display...
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4554426 |
Multiple key with invisible hinge
A printed circuit keyboard of the type comprising a face plate (10) having apertures through which keys (11) project, a resilient silicone rubber pad (12) having convex dimples (15) which engage...
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4551586 |
Multiple contact layer membrane switch
A membrane switch is provided having at least two surfaces having contact members thereon. Such contact surfaces can be applied to different layers of the switch assembly or to both the top and...
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4549093 |
Tactile array sensor
A tactile array sensor comprises an array of substantially parallel row conductors disposed upon an alumina substrate. An array of substantially parallel column conductors overlies the array of row...
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4543563 |
Mechanically-actuated transparent touchbars and touchplates
A transparent touchbar or touchplate is supported at its edges by a plurality of push-button switches. A plurality of valid touchpoints exist; and the touching of each can be distinguished, though...
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4543562 |
Mechanically-actuated touchbars and touchplates using multiple-closure switches
A touchbar or touchplate is supported on its edges by force-sensitive switches, such as push-button switches, each having a plurality of contacts opened or closed at different pressure thresholds....
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4540865 |
Push buttons
A keyboard (61) is provided with rubber (silicone) buttons (64, 66) with collapsible webs (14) connecting the buttons to a base layer (10, 40, 60). A solid finger of rubber (20) underneath each...
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4539445 |
Click disc switch assembly
There is disclosed a click disc switch assembly comprising a plate-like base having on it electroconductive ink paths including (a) "row" paths each including a respective row of contact pads in a...
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4536628 |
Pushbutton switch assembly with integrated lock-down switch
The present invention relates to a pushbutton switch assembly for use with telephone sets, having an integrated lock-down switch. With the aid of a rotatable trip cam of the lock-down switch,...
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4536625 |
Keyboard design
Electrical switch keyboards comprise a one-piece mat made of resilient material laid in sealing engagement upon a frame within which switching elements are positioned to operate in conjunction with...
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4529848 |
Switch with conical spring actuator
A capacitive or a membrane switch is provided with a coil spring which has a conical base and a top cylindrical portion. The spring biases a switch key to its rest position. When the key is...
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4529849 |
Push-button switch and a keyboard comprising the same
A novel stroke converting mechanism for a push-button switch is disclosed. The stroke converting mechanism is for providing a push-button switch or a keyboard comprising the push-button switches...
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4528431 |
Rocking switch actuator for a low force membrane contact switch
A pivoting rocking actuator has a first bottom surface, which comprises two spaced portions, resting on an upper surface of a membrane contact switch assembly when the actuator is in its rest...
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4527030 |
Keyboard
A keyboard comprising a flexible-foil printed circuit in which an insulat foil or sheet substrate is provided with printed conductors and contact surfaces, in which the insulating foil sheet is...
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4527021 |
Keyboard switch assembly
A key-board switching unit for electronic instruments is constructed with a printed circuit board provided with a plural number of pairs of fixed contact points on the surface and an insulating...
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4525606 |
Sensor switch
A sensor switch comprising a printed circuit base board provided with a plurality of stationary contacts on a surface thereof and a flexible sheet member consisting of a rubber-like elastic...
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4524249 |
Keyboard switch assembly
A keyboard assembly is shown utilizing a keypad formed from a sheet of soft rubber having a plurality of dome shaped portions. A conductive layer is disposed on the bottom surface of each dome...
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4523060 |
Combination keyboard
A combination keyboard including a first set of switches closed by depressing discrete keys (b 21) and a second set of switches closed by depressing selected areas (69) of a flexible overlay (49)...
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4520429 |
Dual-path circuit board connector with internal switching
A dual-path, multicontact connector for a printed circuit board includes two perpendicular groups of contacts and a plurality of internal switches which permit conductivity to be selectively...
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4517421 |
Resilient deformable keyboard
An array of fluid filled cells bearing symbols on their faces transmit applied pressure or displacement to a remote end of the cell which have a mating array of electrical switches normally...
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4517660 |
Foldable electronic apparatus
An electronic apparatus comprises a left-hand unit and a right-hand unit mutually connected to constitute a foldable structure, in which a display device is provided in one of the units while an...
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4515999 |
Full travel keyboard
A full travel membrane keyboard is presented having membrane switches with an elastomeric layer between the membrane switching array and upper mechanical elements of the key, the elastomeric layer...
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4510353 |
Method and kit for construction of custom prototype membrane switch panel
A custom prototype membrane switch panel, kit, and method for construction. Two membranes, an insulative spacer for use therebetween, and a plurality of conductive elements disposable between each...
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4508942 |
Keyboard switch
A membrane keyboard with a circuit means having a plurality of snap action domes formed therein has a cover sheet thereon. A plurality of cavities formed between the cover sheet and the domed...
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4504709 |
Membrane switch for hopper
An improved membrane switch (12) of greater sensitivity and simplified, lightweight construction which is particularly adapted for sensing material levels in hoppers, comprises a first...
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4503294 |
Keyboard switch
A membrane keyboard is presented wherein a series of slits are provided through the switch sheet and disposed above the switch motion cavity whereby the required actuating forces are decreased for...
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