101 |
Interactive display system with touch data entry |
US97012 |
1979-11-23 |
US4310839A |
1982-01-12 |
Kurt R. Schwerdt |
An interactive tabular display system having thin membrane switches positioned on the display surface around the periphery. The switches are categorized as select or function depending on the particular application software program in use. Touching one of the select switches causes a cursor to be displayed in the row adjacent to that switch; automatically, the cursor incrementally advances across that row sequentially underlining data items. When the switch is opened, the data item underlined is displayed in reverse video and additional data related to that item is displayed elsewhere on the display. The switches are provided with backlighting to provide illuminated touch points for use in dimly lit operational rooms. |
102 |
Method of constructing liquid crystal display |
US862963 |
1977-12-21 |
US4192060A |
1980-03-11 |
Isamu Washizuka; Shintaro Hashimoto; Masaru Kakumae; Yuuichi Sato; Isao Fujisawa; Yukihiro Inoue; Sadakatsu Hashimoto |
In an electronic calculator essentially comprising a multidigit display, a keyboard and a data processor unit, a multidigit liquid crystal display is deposited together with integral key actuators of the keyboard of a flexible circuit film which carries electrical conductor leaves in a desired pattern. The conductor leaves to be in contact with terminals of the liquid crystal display are formed to extend in the direction of length of the liquid crystal display to thereby establish room for a battery compartment. |
103 |
Keyboard switch assembly with multiple isolated electrical engagement
regions |
US805346 |
1977-06-10 |
US4164634A |
1979-08-14 |
Michael N. Gilano |
A switch assembly includes an array of switches arranged on a substrate having a conductive pattern on a surface thereof defining a plurality of switch contacts. An apertured spacer is disposed adjacent the surface with an aperture being positioned in opposed relationship to each switch contact. A multi-conductive contact material is disposed to provide switch closure when forced through an aperture in the separator into engagement with a switch contact at a large number of separate conductive engagement regions. In one arrangement the multi-conductive contact material is a fine mesh woven wire screen stretched taut adjacent the separator while in another arrangement it is a uniaxially conducting material having a high density of parallel, spaced conductors extending perpendicular to the surface. |
104 |
Membrane switch apparatus |
US585773 |
1975-06-11 |
US4034176A |
1977-07-05 |
Willis August Larson |
A membrane switch in which a membrane layer is supported in a spaced relation from at least one contact of one or more pairs of electrically conductive switch contacts. The contacts are mounted on an insulated substrate. The membrane surface adjacent the contacts has an electrically conductive bridging surface supported thereon such that depression of the membrane will bridge the contacts to complete a circuit. The membrane is mounted on the substrate and is held in a normally spaced relationship with the contacts by a plurality of projections formed on the membrane surface adjacent the substrate or one or more of the contact surfaces. The projections may be integrally formed by puncturing the membrane surface with a sharp object or projections may be formed by permanently deforming the membrane without rupturing the membrane itself. Additionally, the projections may be formed by applying individual spacer elements to the membrane surface. |
105 |
Multi-contact push-button switch and plural embodiment for keyboard
switch assembly |
US569381 |
1975-04-18 |
US4029916A |
1977-06-14 |
Pak-Jong Chu |
A push button switch has a spring contact plate and a circuit board in superposed position. The spring contact plate has one or more switch positions, each switch position comprising a prestressed domed portion surrounded by a flat sheet portion. The domed portion includes a central portion and radial webs connecting the central portion to the flat sheet portion. Spring contacts extend radially from the central portion, each contact between a pair of webs. The domed portion is prestressed to assume a stable position offset upwards from a plane coincident with the flat sheet portion, and the webs each have an upwardly bent portion at the junction with the flat sheet portion. A push button acts on the central portion and pressure on the push button causes the central portion to snap through the plane of the flat sheet portion, with the spring contacts contacting contact areas on the circuit board. Release of the push button enables the domed portion to snap back to the stable position. |
106 |
Portable calculator |
US506196 |
1974-09-16 |
US4002892A |
1977-01-11 |
Adolf H. Zielinski |
A portable electronic calculator is provided with a housing carrying a first printed circuit board having the operating parts mounted thereon, i.e., keyboard, electronic arithmetic unit, and multi-digit display unit. The housing is of rectangular outline and of shallow height, and is provided at one end with a receptacle communicating with the first printed circuit board and opening at the end of the housing. An electrical supply unit is mounted on a second printed circuit board which slides into said receptacle, said two printed circuit boards having plug-and-socket connection means therebetween for automatically making and breaking connections when said second printed circuit board and electrical supply unit are inserted into or removed from said receptacle. |
107 |
Calculator keyboard switch with disc spring contact and printed circuit board |
US3796843D |
1973-01-02 |
US3796843A |
1974-03-12 |
DURKEE G; WAREBERG P; YODER A |
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.
|
108 |
Keyboard switch assembly with improved movable contact having cantilever supported central member with radially extending contact fingers |
US3777082D |
1972-09-08 |
US3777082A |
1973-12-04 |
HATLEY D; WILSON H |
A mechanically operated keyboard with key stations having a multiplicity of electrical switch contacts for providing an encoded electrical data output signal corresponding to and uniquely identifying individual key stations includes an array of movable contacts each corresponding to an individual key station and which are formed in a sheet of conducting material mounted above a corresponding array of fixed contacts to form multiple contact electrical switches for each key station of the keyboard. Each movable contact has a central member suspended to the sheet of conducting material in cantilevered fashion and includes a plurality of peripherally spaced contact fingers joined to the central member such that the contact fingers adjacent the junction of the central member to the conducting sheet will contact associated fixed contacts of a key station only after the remaining contact fingers have come into contact with their associated fixed contacts. An electrical circuit coupled to the contact fingers provides a strobe output signal only when all of the electrical switch contacts associated with a given key station have been actuated as indicated by the closure between the contact finger adjacent the junction of the central member to the conducting sheet and its associated fixed contact.
|
109 |
Pushbutton diaphragm switch with improved dimple actuator and/or capacitance-type switch contact structure |
US3643041D |
1970-12-30 |
US3643041A |
1972-02-15 |
JACKSON CHARLES A |
A faceplate is provided with a plurality of openings therein, each representing a digit to be used in a keyboard; a metal switch plate is positioned immediately beneath the faceplate and includes a plurality of dome-shaped resilient deformable dimples forming keys therein, each registering with and extending into a different one of said openings. An insulating plate, with holes therein registering with the dimples, separates the switch plate from a contact board that includes a plurality of contact buttons, each registering with one of the holes in the insulating plate. The dimples may be depressed by the fingertip of an operator to ''''snap'''' into contact with a corresponding contact button and will ''''snap'''' back to their original position when fingertip pressure is released.
|
110 |
Elastomeric keyboard with improved printed circuit contact means |
US3592979D |
1969-11-05 |
US3592979A |
1971-07-13 |
REDMAN SAMUEL A |
A signal-actuating device having its major component parts molded as a single piece. The actuating device includes a single body composed of an elastomeric material which is a glycol cured isocyanate terminated polyester formulated to be virtually a true gel, character symbols bonded on the body representing key positions and Mylar circuitry strips of etched copper wires bonded to raised projections located on the underside of the body. Contact made by depressing a key gives a binary-coded output, as well as providing a signal for activating distant devices.
|
111 |
Printed circuit keyboard |
US3591749D |
1969-05-12 |
US3591749A |
1971-07-06 |
COMSTOCK JAMES MARTIN |
A printed circuit keyboard having contacts thereon with leads from the contacts passing through the board and connected to conductors on the underside of the board. A ground plane in the form of a conductive sheet is positioned above the contacts and biased out of contact therefrom. This sheet could be Mylar plated with nickel. The Mylar sheet is positioned over an apertured member aligned with the contacts to provide the biasing. The Mylar is sufficiently taut so that only one contact can be positioned against the depressed Mylar sheet at one time. A cellophane or other member can be placed over the Mylar and aligned with the apertures to provide numeric indicators for the keyboard.
|
112 |
Contact component and method for the production thereof |
US14403255 |
2013-05-29 |
US10096434B2 |
2018-10-09 |
Claudia Kowanda |
An electrical contact component and a method for the production thereof. The contact component has a sintered contact element and a contact carrier cast onto the contact element. The grains of the contact element are oriented in a preferential direction. |
113 |
Secure smartcard reader |
US15496174 |
2017-04-25 |
US09996713B2 |
2018-06-12 |
Igal Yosef Yanko; Scott William McKibben; John Henry Barrowman |
A secure smartcard reader including a smartcard connector and a flexible printed circuit board wrapped around and at least partially surrounding the smartcard connector and at least partially defining a security volume enclosing the smartcard connector, the wrapped flexible printed circuit board defining on an outer-facing surface thereof a plurality of keypad contacts, the wrapped flexible printed circuit board defining electrical conductors connecting the plurality of keypad contacts to connector pads and the wrapped flexible printed circuit board defining a protective anti-tamper mesh protecting the electrical conductors. |
114 |
Secure smartcard reader |
US14787143 |
2015-08-25 |
US09904815B2 |
2018-02-27 |
Igal Yosef Yanko; Scott William McKibben; John Henry Barrowman |
A secure smartcard reader including a smartcard connector and a flexible printed circuit board wrapped around and at least partially surrounding the smartcard connector and at least partially defining a security volume enclosing the smartcard connector, the wrapped flexible printed circuit board defining on an outer-facing surface thereof a plurality of keypad contacts, the wrapped flexible printed circuit board defining electrical conductors connecting the plurality of keypad contacts to connector pads and the wrapped flexible printed circuit board defining a protective anti-tamper mesh protecting the electrical conductors. |
115 |
High Voltage Disconnection Telescopic Switches Isolated by Air for Isolated-Phase Bus |
US15529852 |
2015-11-26 |
US20170263397A1 |
2017-09-14 |
Mikhail Sotnikov |
This invention relates to a telescopic switch for isolated-phase bus duct, comprising: a first male conductor including a first guide-positioner means (4); a 5 second female lead connector coaxially separated from the first connector which includes a second guide-positioning means, wherein said moving contact is coupled coaxially and in a movable manner to the first conductor, and wherein said moving contact moves to an open position, wherein said moving contact is separated from the first conductor and to a closed position where said moving contact causes a contact between the first male connector and that of a second female connector, through interaction with one another from the first guide-positioner means of the first conductor, the second guide-positioner means of the second conductor and the guiding means of the moving contact. |
116 |
Secure smartcard reader |
US15098629 |
2016-04-14 |
US09665746B2 |
2017-05-30 |
Igal Yosef Yanko; Scott William McKibben; John Henry Barrowman |
A secure smartcard reader including a smartcard connector and a flexible printed circuit board wrapped around and at least partially surrounding the smartcard connector and at least partially defining a security volume enclosing the smartcard connector, the wrapped flexible printed circuit board defining on an outer-facing surface thereof a plurality of keypad contacts, the wrapped flexible printed circuit board defining electrical conductors connecting the plurality of keypad contacts to connector pads and the wrapped flexible printed circuit board defining a protective anti-tamper mesh protecting the electrical conductors. |
117 |
SWITCH DEVICE |
US15023680 |
2014-11-11 |
US20160233036A1 |
2016-08-11 |
Katsuichi MINAMI |
A switch device includes a housing, an operating body accommodated movably in the housing, a stopper to lock the operating body, a switch contact performing electrical connection and disconnection in response to the movement of the operating body, a releaser disposed in the housing, and a retainer spring disposed in the housing. The operating body includes a cam section. The stopper includes an engaging section which is engaged with the cam section upon a movement of the operating body as to lock the operating body. The releaser includes a working section projecting outward from the housing. The retainer spring urges the releaser in a predetermined direction. When the operating body is locked, one of the releaser and the retainer spring presses the stopper to engage the engaging section with the cam section and retain the engaging section at the cam section. While the engaging section is engaged with the cam section and retained with the cam section, an operation on the working section of the releaser causes the releaser to move, and causes one of the releaser and the retainer spring to move in a direction away from the stopper as to cause the engaging section to remove from the cam section. The switch device includes a small number of components with a simpler structure, and has a small size. |
118 |
Contact Materials for High Voltage Direct Current Systems |
US14482873 |
2014-09-10 |
US20150069020A1 |
2015-03-12 |
Juergen STEINWANDEL; Dietrich JONKE; Helmut PIRINGER |
A contact element for high voltage direct current switches includes a matrix made of a first material selected from the group comprising copper, silver, palladium, platinum, tungsten, molybdenum, rhenium, nickel, gold, and alloys thereof. The contact element also includes a foreign phase, which is dispersed in the matrix and is made of a second material selected from the group comprising carbon, tin(II) oxide, tin(IV) oxide, zinc(II) oxide, tungsten, nickel and mixtures thereof. The contact element has a porosity of ≦1.0% by volume, based on a total volume of the contact element. |
119 |
LOW RESISTANCE SWITCH USING CARBON CONTACTS |
US09439600 |
1999-11-12 |
US20010052729A1 |
2001-12-20 |
ROBERT R.
TURNBULL; G. BRUCE
POE; TIMOTHY A.
BONARDI |
A switch assembly includes a plurality of electrical devices and a plurality of user activated switches. The plurality of electrical devices each include a control terminal. Each of the electrical devices causes a different distinguishable output to be provided when a control signal is asserted on the control terminal of one of the plurality of electrical devices. The plurality of user activated switches include carbon-coated contacts. Each of the user activated switches when asserted provides the control signal to the control terminal of one of the plurality of electrical devices. |
120 |
Conductive lacquer contact surface |
US500961 |
1995-08-02 |
US5605223A |
1997-02-25 |
Klaus Gutmann; Hans-Werner Luckehe |
In order to produce keyboards, two pairs of diagonally connected squares with rounded corners are used as fixed contacts. A direct diagonal connection electrically connects two non-adjacent squares. The squares are conductive lacquer (carbon lacquer) and cover copper pads on a printed circuit board. |