Abstract:
A membrane switch control panel arrangement and a label assembly for labeling same, for providing for in field applied identification of the control panel legend upon assembly of the switch, in which the control panel arrangement is of the keyboard switch type providing for touch sensitive switch actuation, with the control panel arrangement circuit board circuiting, membrane or touch sensitive switch components therefor, and the control panel legend sheet switch location indicia therefor being arranged in superposed modular group form, and columnarily arranged, spaced apart switch actuation and observation sets, which sets are disposed in spaced apart rows and extending crosswise of the panel in a columnar configuration, with the legend sheet being delineated to receive and have adhered thereto individual in field marked labels that are to bear the switch identification indicia of the adjacent switch location indicia row. The label assembly comprises a carrier sheet and an adhesive backed label forming sheet that are both specially segmented to define specially shaped sections cooperation to remain united for application thereto, by using a typewriter or the like, the switch identification indicia involved that becomes known only when the assembly of the switch components and controls has been completed. The individual labels are shaped to be then expeditiously separated from the carrier sheet and centered on the respective legend blank spaces by way of throw-away end tab section arrangement that is part of the label assembly arrangement.
Abstract:
A capacitance-type switch in which an integral capacitance spacer layer element extends over and is severally movable toward and away from separate contact elements of separate switches.
Abstract:
A keyswitch arrangement including an array of switches formed on a flexible dielectric substrate wherein each switch includes a stationary conductive contact lying in the plane of the substrate and an adjacent movable conductive contactor carried on a flap cut out of the substrate and bent along a hinged line located between the contact and the contactor. The stationary contact and movable contactor are both formed on the same side of the substrate and are normally disposed in the open switch position in confronting relationship with the flap at an acute angle to the plane of the substrate.
Abstract:
The subject matter of this invention relates to a membrane switch having a base sheet with a plurality of conductors on one surface of the sheet. A spacer sheet is adhesively secured to the base sheet on the surface having the plurality of conductors. The spacer sheet has a plurality of apertures, which apertures are aligned with selected portions of the conductors. A flexible cover sheet is adhesively secured to the spacer sheet. The flexible cover sheet has a second plurality of flexible conductors on its surface adjacent to the spacer sheet. The flexible conductors have selected portions aligned with respective apertures. Each of the flexible conductors has a thickness no greater than 0.0025 mil. The flexible cover sheet is positionable through a selected aperture with a portion of the flexible conductor to contact electrically the respective conductor on the base sheet aligned with that aperture.
Abstract:
An electronic apparatus principally comprising a display unit, a mechanical contact type keyboard unit and several LSI (large-scale integrated circuit) elements including a computation circuit, a logical control circuit, a storage circuit, a program memory circuit, etc., these units and elements all being incorporated on a single flexible plate of electrical insulating material, such as a film of polyethylene-terephthalate or a polyamide. The metal depositing technology or the etching technology is applied to form a wiring pattern on the flexible plate. The LSI elements are directly mounted on the single flexible plate by utilizing the wireless bonding method, such as for example, a flip chip bond or a beam lead bond, before these elements are packed and sealed. The substratum may be secured in the inside of the apparatus in a serpentine fashion in order to make the best use of the inside space of the apparatus. It is easy to adjust the angle or the position of the display units with respect to the keyboard unit, since the display units are mounted on the flexible plate.
Abstract:
A keyboard switch assembly including a printed circuit board having four switch terminals on one side of the board, three of the terminals being arranged in a triangle and the fourth disposed within the triangle. Conductors on the one side of the board are respectively joined to the interior terminal and at least one of the three terminals. A conductive, generally triangular, snap-acting dome switch member is provided having arcuate apices, projections being respectively formed from the apices and respectively engaging the three terminals thereby spacing the periphery of the switch element from the one surface of the printed circuit board and the conductors thereon, at least the conductor connected to the interior terminal extending under the dome. The switch element has a fourth protection formed from the interior of the dome adjacent the center thereof which is in registry with the interior terminal and engages that terminal when the dome is deflected thereby completing an electrical circuit between the three terminals and the interior terminal. A layer of insulating material covers the conductors exclusive of the terminals. A sheet of insulating material covers the insulating layer and has an opening therein which receives and locates the switch member. Another sheet of insulating material covers the first sheet and the switch member. A plate covers the second insulating sheet and has an opening therein which receives a push button in registry with the switch element, depression of the push button actuating the dome of the switch member to a nonovercenter, deflected position in which the interior projection on the dome engages the interior switch terminal.
Abstract:
An encoded keyboard device which includes a plurality of layers of insulator material, at least two of which have patterns of electrically conductive material supported thereby, a plurality of holes extending through one of said layers and positioned with respect to said conductive patterns so that electrically conductive material may extend through the holes and electrically interconnect the patterns, and a plurality of keys adapted to push electrically conductive material against one of said patterns to produce a coded output representative of the key depressed.
Abstract:
An electrical switch includes a coil assembly, an armature rotatable about an axis of rotation and driven by the coil assembly, and a contact assembly having a contact spring directly connected to the armature. The contact spring is a spring pack including a plurality of springs. At least one of the springs of the spring pack is formed of a first material and at least another one of the springs of the spring pack is formed of a second material different from the first material.
Abstract:
A key entry device including a housing, a keypad array disposed within the housing and including a plurality of keys, a key contact array disposed within the housing below the keypad array and including a plurality of contact pairs, a dome array underlying the keypad array and the key contact array and including a plurality of domes, and a protrusion array underlying the dome array and including a plurality of protrusions, whereby depression of one of the plurality of keys of the keypad array causes a corresponding one of the domes of the dome array to be displaced downwardly and to be deformed by pushing engagement with a corresponding one of the protrusions of the protrusion array into contact with at least one of the contact pairs of the key contact array.