Abstract: A switch assembly for remote selection and two-way operation of individual motors for vehicle rearview mirror adjustment. A quadulateral touch frame is gimballed by means of a nested yoke on a housing for movement about two orthogonal axes and is superposed for contacting an actuator frame having four spaced pins extending commonly therefrom through the housing, each for actuation of an individual switch mounted on a circuit board. User movement of any one of the four sides of the touch bar actuates a pair of the switches, only one of which is snap-acting. A separate selector nested in the touch frame operates sliding wipers for selected switching between pairs of contacts on the circuit board for selection of operational mode for the four main switches.

Abstract: A switch device having a casing, an actuator swingably supported to the casing, a plurality of projections suspended down from the lower surface of the actuator for changing over a switch by pressing a plurality of switch elements arranged in the casing which has a partition plate for separating the actuator and the switch element in the casing, a plurality of operation openings perforated at the partition plate for the actuators of the switch elements, and rubber pressing gaskets which transfer movement of the actuator projections to movement of switch elements and seal the upper portion of the casing from the lower portion in which the switch elements are located. Thus, the switch device can provide high waterproofness with a simple construction.

Abstract: A swich comprises pack-aligned switching units 9, each provided with fixed 30 and movable contacts 36 operable by a cam shaft 11 rotatably passing through the switching units 9 to close and break electric circuits to which said contacts lead off. The shaft is supported, at one free end thereof, by a terminal closure element 10 fixed to the switching units 9 and is connected, at its opposed end, to a trip mechanism 12 located in a trip unit 8 fastened to said switching units. The switching units, trip unit and terminal closure element constitute each a modular unit engageable with other modular units by restrained fixing and disengageable therefrom without bringing about the disassembly and division of said unit into its component parts. The cam shaft is comprised of several hub-shaped elements 40 consecutively engaged in a rotational direction and associated each with a switching unit.

Abstract: A dial device houses switches which have functions related to the dial device. An opening is formed at the front end of the dial knob. Switch operating parts for these switches housed in the dial device are exposed through the opening. The switches are attached to a member such as the shaft by which the dial knob is supported, and these switches and their operating parts are left not turned even when the dial knob is turned.

Abstract: A self-contained data terminal or typewriter keyboard completely operable by a single human hand for the input of information into a computer or other electronic device. The keyboard comprises five sets of keys, each set aligned respectively with the thumb, index finger, middle finger, ring finger, and small finger of an extended hand. Complementary orientation and positioning of the sets are determined by whether the terminal is to be used by a right-handed or left-handed user. The control keys may be used to manipulate text or other information entered into the attached device and are operated by the thumb. The character keys consist primarily of letters of the alphabet, numbers, and punctuation sets and are positioned below the remaining four fingers. The terminal is operated in a single keystroke character input mode. Several data control keys can also be mounted to the terminal to perform additional text manipulation functions, similar to the control keys, or any other necessary commands.

Abstract: A switch assembly for a geared limit switch for valve actuators is formed from aligned switch modules. The switch modules includes a pair of switch units, each switch unit having a plunger and a movable contact plate mounted between two springs. As the plunger is driven inward, a camming element on the plunger contacts an edge of an aperture in the movable contact plate, forcing the plate to move in a direction perpendicular to the line of plunger travel. The inward motion of the plunger and the camming action continue after the contacts have closed, wiping the contacts mounted on the movable plate across the surfaces of the stationary contacts. When the plunger is released, an outer edge of the movable plate engages a beveled inner wall of the switch unit housing, returning the movable contact plate to its original position.

Abstract: 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 section, data processing means and a display section and where both the keyboard and display sections are transparent to permit images thereof to be projected on a screen for teaching purposes.

Abstract: A push-button switch operates by depression of a push-button to move a movable contact into engagement with respective fixed contacts. The push-button when depressed rotates a roller through a predetermined angle by means of interengaging ratchet-type teeth on the push-button and roller respectively. A two-arm lever engages an indented outer surface of the roller, so that forward or reverse pivotal movements of the lever are effected whenever the push-button is depressed. The lever operates the movable contact. The roller also carries a segmented colored disc so that alternating colors are associated with the push-button to represent the respective movable contact positions.

Abstract: An improved mail sorting computer keyboard, having a plurality of keys arranged in first and second groups for rotational movement, is provided. A first rod is disposed through apertures of each key of the first group of keys while a second rod is disposed through apertures of each key the second group of keys. A third rod extending transversely across the keyboard and under a front portion of the first group of keys and a fourth rod extending above the first group of keys define the rotational arch for the first group of keys. A fifth rod transversely disposed under a front portion of the second group of keys and a sixth rod transversely disposed under the rearward portion of the second group of keys defines the rotational arch for the second group of keys. Each key of the keyboard actuates a corresponding electrical switch for sending impulses to a mail sorting computer.

Abstract: A remote control switch for posture adjustment of automotive mirrors comprises plural fixed contact groups each having a first to third fixed contacts formed on both sides of a substrate and plural pairs of moving contacts disposed corresponding to the fixed contact groups, respectively. Each of the moving contact pairs consists of two electrically-conductive rolling elements movable on the substrate while being so kept by slidable actuating members disposed correspondingly to each moving contact pair. Each of the actuating members are forced by a resilient member disposed correspondingly to the actuating member in a direction where each moving contact pair takes a first contact position in which it is put into contact with the first and second fixed contacts.

Abstract: A plurality of keys are mounted in parallel columns on a key supporting panel for reciprocation between upper, inactive positions and lower, active positions. Each key comprises a translucent core having a legend on its upper end, a conductor on its lower end, and an opening therethrough intermediate its ends. Each core is mounted for reciprocation at its lower end in a plastic sleeve, which is removably mounted by a flexible detent in one of the openings in the panel, and is surrounded adjacent its upper end by a flexible sleeve or hood which resiliently urges the key core to its upper position. In each column of key cores the openings in the latter register with each other, and an elongate electroluminescent strip extends through the registering openings and beneath the panel to prevent accidental withdrawal of the keys, and to illuminate the legends on a column of keys when energized.

Abstract: An electro-mechanical controller for railway locomotives and other applications is arranged with separate throttle/dynamic brake and reverser handles pivotable on a common, preferably horizontal, axis. Various mechanical interlocks are provided to meet established AAR requirements in a compact assembly arranged for console mounting.

Abstract: A method of operating "left" and "right" electric windows in a vehicle is described. A switch has an actuator manipulable, as by pivoting, from a neutral position to respective ones of a "left front", a "right front", a "left rear" and a "right rear" position, relative to the mounting of the switch in the vehicle. The various actuator positions effect the following responses from the windows:"Left front"="left" window "up""Left rear"="left" window "down""Right front"="right" window "up""Right rear"="right" window "down".The switch actuator may also be movable directly to a "front" position which drives both the "left" and "right" windows "up", or to a "back" position which drives both windows "down". Further, manipulation of the actuator in another plane may be used to switch between "front" and "rear" window control.

Abstract: A plurality of sensor surfaces upon the touching of which an electric pulse is given off are arranged on a surface in an operating arrangement; the surface is surrounded by a frame whose surface is so shaped three-dimensionally as to provide the operator with a feelable indication of the position of the individual sensor surfaces.

Abstract: In order to have a large flexibility of application with simultaneously a reasonable number of different piece parts for a so called transformer keyboard the key element is subdivided. A base (1) usable for all applications includes elements for the protection against rotation (14) and for fixing (13) it on a printed circuit board (6) without screws and without soldering operations, further elements to guide (18) the stem (2) and to limit its stroke. The stem receives a ferromagnetic core (4) within its guidance (21). The shape and the size of wall portions (2', 22) change in accordance with the desired raster of the keyboard wherein the key element is used. A cap (3) carrying the marking has the same shape for all stems and is connected to the stem in a detatchable manner (27, 33). Due to their small height these key elements are especially suited in applications for data terminal keyboards with an ergonomically good design.

Abstract: A switch control device for controlling a plurality of switches for actuating apparatuses of a motor vehicle, respectively, including at least one stop mode switch allowed to be operated only in a stop state of the motor vehicle and at least one running mode switch allowed to be operated in a running state of the motor vehicle and provided separately from the stop mode switch such that input operation of the stop mode switch and the running mode switch is regulated on the basis of whether the motor vehicle is in the stop state or in the running state.

Abstract: A pulse generator with a pin-shaped switching plunger for actuating at least one contact is so designed that many switching positions are possible. It is characterized in that the switching plunger (3), which is guided in a housing, is slidable in the direction of and rotatable about its longitudinal axis (5), and that the switching plunger (3) is provided with at least one actuating member (4) which can enter into nonpositive engagement with at least one contact (2.1 to 2.8 and 1.1 to 1.8) both in any of the longitudinally shifted positions and in any of the rotated positions.

Abstract: A push button device for electric contacts or the like, particularly suitable for instrumentation panels, that includes a fixed annular body having a movable body external thereof. Two small cylinder-shaped members of conductive material, which in their rest position, are between the fixed body and the movable body and in their contact operative position, are adjacent to the base of the annular body. The device also includes return springs connected to the respective ends of the cylinder-shaped conductive members.

Abstract: A keyboard includes a plurality of keys thereon, each of which is capable of three different switching actions for entry of data or commands into a word processor, typewriter, computer or the like. Each key includes a first inclined surface for generating a first switching action responsive to finger contraction, a second inclined surface for generating a second switching action responsive to finger extension, and a horizontal surface for actuating a third switching action responsive to finger depression. Each key is connected to a respective switch. Each switch includes a carriage operating horizontally against spring-loaded horizontal plugs. The carriage houses a spring-loaded vertical stem attached to the respective key. In one embodiment each key-switch combination is substantially identical to the other. The base is formed into different levels upon which key-switch combinations are mounted.

Abstract: A keyboard includes a plurality of keys thereon, each of which is capable of three different switching actions for entry of data or commands into a word processor, typewriter, computer or the like. Each key includes a first inclined surface for generating a first switching action responsive to finger contraction, a second inclined surface for generating a second switching action responsive to finger extension, and a horizontal surface for actuating a third switching action responsive to finger depression. Each key is connected to a respective switch. Each switch includes a carriage operating horizontally against spring-loaded horizontal plugs. The carriage houses a spring-loaded vertical stem attached to the respective key.

Abstract: An inter-locked button actuated matrix switch system for automotive instrumentation with button cluster switching, in which the switches form a 2.times.2 matrix switch circuit free of diode feedback protection in its input lines, the button structures being rocker mounted preventing the concurrent actuation of their associated switches. One button structure integrally includes two, closely spaced button elements having the look and feel of two independent buttons, with the other button structure having a relatively wide, single, continuous button actuation surface, the three "buttons" being located in line forming a button cluster for the automobile's information center.

Abstract: A push button switch includes a case consisting of an upper case member and a lower case member, a stem vertically movably provided in the case, and a switch element for effecting on-and-off operation of the switch by vertical movement of the stem. A holding structure for the switch element has a first projection formed at an upper end of a frame of the switch element, a second projection formed around a terminal of the switch element, a projection insert hole formed through the upper case member and engaged with the first projection, and a terminal insert hole formed through the lower case member and engaged with the second projection.

Abstract: In compact card-like equipment having an IC chip and a power source cell, an equipment case has a multilayered structure of a pair of upper and lower sheets and a pair of upper and lower panels laminated on a frame, respectively. A flexible substrate and a paper-like cell as a primary cell are provided in the equipment case. The paper-like cell has a pair of positive and negative electrode sheets and a power generating unit interposed therebetween. A sealing member seals the peripheries of the electrode sheets of the paper-like cell. The paper-like cell is received in a receptacle space formed in the frame. The flexible substrate is received in another receptacle space formed in the frame. The electrode sheets of the paper-like cell are electrically connected to terminals of the flexible substrate by means of a film-like connecting member. This compact card-like electronic equipment such as a calculator is thin and compact in size.

Abstract: A telephone hook switch assembly has a housing which defines first and second cavities and a shaft rotatably mounted in the housing. A hook switch lever is mounted on the shaft and is rotatable therewith in the first housing cavity. A switch assembly having snap-action switches is positioned in the second housing cavity. The snap-action switches open and close in a predetermined sequence in response to rotation of the hook switch lever. The assembly provides superior isolation of the electrical contacts from environmental contaminants and is more rugged than conventional leaf spring and program card arrangements.

Abstract: A snap switch with a self-cleaning function having a switch body with a fixed contact and a movable contact for performing make-break operations. A knob, mounted on the switch body, operates a contact operation member causing the movable contact to abut the fixed contact when the knob is rotated by a predetermined rotational angle and further causing the movable contact to slide on the fixed contact when the knob is further rotated.

Abstract: The invention relates to a compact, mechanically operated switch which is especially suitable for use in a telephone set having a loudspeaker receiving function. The switch includes a housing and, disposed therein, a first and a second rotor for opening and closing cooperable contacts and a third rotor for restricting the rotation of the second rotor under a certain condition. All the rotors are disposed in axial alignment with each other. The first and second rotors are urged to rotate in one direction while the third rotor is urged to rotate in the other direction by the action of a force greater than that urging the second rotor to rotate in the one direction. A pushbutton is disposed between the first and second rotors and acts, when depressed, to forcedly rotate them in the other direction so as to establish a loudspeaker receiving circuit. A lock pin cooperates with the pushbutton to lock it in a depressed position.

Abstract: A rotary power control unit is capable of functioning as many different switches. The power control unit includes a housing, a shaft-actuator assembly, a circuit board with a variable resistor, and a strap for containing these elements in the housing. The shaft-actuator assembly is rotatably attached to the floor of the housing, and passes through the circuit board and strap where it is connected to a control knob. The shaft is also fastened to a wiper shoe which rotates with the shaft and varies the resistance of the circuit. By interchanging shaft-actuator assemblies, and adding appropriate components to the circuit board, the rotary power control unit may take the form of:a simple rotary control,a rotary control with full-on bypass,a simple push control,a three-way push control, ora tandem push control.

Abstract: A switch gear which includes a housing have first and second sides and a third side therebetween, at least one main contact bridge in the housing displaceable between two ON-OFF switch position, a spindle rotatable by a handle and carrying a body having a cam slot receiving a cam follower of a contact bridge holder, the contact bridge holder carrying contacts for effecting the two switch positions with associated pairs of fixed contact rails carried by the housing, the fixed contact rails being connectable by connector screws to electrical hook-up leads at the respective first and second housing sides, first and second separate housing compartments adjacent the first and second housing sides and carried associated ones of the connector screws, the first and second contact rails being connected through the respective first and second separate housing compartments for connection to the electrical hook-up leads by the connector screws, and the first and second separate housing compartments being selectively moun

Abstract: A switch control device for controlling a plurality of switches for actuating apparatuses of a motor vehicle, respectively, including at least one stop mode switch allowed to be operated only in a stop state of the motor vehicle and at least one running mode switch allowed to be operated in a running state of the motor vehicle and provided separately from the stop mode switch such that input operation of the stop mode switch and the running mode switch is regulated on the basis of whether the motor vehicle is in the stop state or in the running state.

Abstract: A bell or dome-shaped key member is formed of elastic material insertable into a plastic housing part which serves for fastening the key member to a contact plate. The key member is used for holding an actuation button. The key member is fixed in the plastic housing part via swing members which are of one piece integral construction with the plastic housing part and are attached thereto by film hinges. The swing members grasp the key member at a peripheral web at the contact plate side. In a free condition of the swing members, the key member can be inserted into the plastic housing part in unimpeded fashion. Subsequently, the swing members are moved into their retaining position and the key member is thereby locked in the plastic housing part.

Abstract: A control switch for a motor driven remote control mirror device in a vehicle has a switching control circuit for connecting motors for driving a mirror to be tilted to a DC power source. The control circuit has first and second stationary contact to be connected with one terminals of the motors for tilting the mirror around horizontal and vertical axes, and a third stationary contact to be commonly connected to the other terminals of the motors, the contacts are selectively connected with the negative and positive polarities of a power source by bridge members disposed corresponding to the contacts. The bridge members ordinarily connect the contacts to the negative polarity of the power source, and connect, when elastically deformed, to the positive polarity. A push plate is elastically supported by the bridge members, has a leg for operating the bridge members on the back surface, and the relative bridge member is operated by pressing the direction indication unit of the push plate.

Abstract: A control switch for remote-controlling a motor-driven automotive mirror. The stationary contact to be connected to one of the terminals of the motor to move the mirror about a vertical axis, the stationary contact to be connected to one of the terminals of the motor to move the mirror about a horizontal axis, and the stationary contact to be connected to the other terminal of the above two motors in common are formed on a circuit board. Bridge members connect each of the stationary contacts selectively to one of the stationary contacts of a stationary contact pair. The bridge members to connect stationary contacts to the negative polarity of a power supply at their ordinary position and to the positive polarity at their actuated position are accommodate in an enclosure fixedly attached to the circuit board. The actuating rods to act on the bridge members are arranged in the enclosure to be independent of one another, and one end of each of the actuating rods is projecting outside from the enclosure.

Abstract: A seat switch and system for operating a power seat are disclosed. The seat switch includes a seat bench knob and a seat back knob, each mounted to be displaced by the operator to indicate the desired displacement of the seat bench and seat back. A mechanical connection is provided from the knob to a set of contacts such that the contacts are appropriately displaced relative to a pattern of contact pads. Appropriate signals are generated to indicate the desired motion of the seat based on the contacts engaging the contact pads. These signals are interpreted and appropriate motors actuated to displace the seat to obtain the desired seat positions.

Abstract: An electric switch is provided with a support frame at which several key switch elements are individually clipped on. An actuating front piece is attached at the support frame, which is mounted at a front plate of a switching cabinet or the like. A transmission apparatus with a compression spring is provided between a pressure pin of the actuating front piece and a ram of the key switching elements. The compression spring, the ram and the pressure pin are disposed in an inner space of the support frame receiving the key switching elements. The transmission apparatus provides several individual thrust journals which are resting in the base body and which are moved against the force of the individually coordinated overthrow springs for actuating the key switch elements against the ram.

Abstract: A switch control device for controlling a plurality of switches for actuating apparatuses of a motor vehicle, respectively, including at least one stop mode switch allowed to be operated only in a stop state of the motor vehicle and at least one running mode switch allowed to be operated in a running state of the motor vehicle and provided separately from the stop mode switch such that input operation of the stop mode switch and the running mode switch is regulated on the basis of whether the motor vehicle is in the stop state or in the running state.

Abstract: A button set and switch particularly useful for an automotive power seat switch are disclosed. The button set is a single one-piece, molded set of buttons each connecting by living hinge to a frame such that each button may be displaced independently but are physically arranged to simulate a preselected design. A printed circuit board may be mounted to the button set and may include a series a clicket switches appropriately positioned to be engaged by each botton for providing appropriate signals to obtain the desired output controlled by the switch.

Abstract: In compact card-like equipment having an IC chip and a power source cell, an equipment case has a multilayered structure of a pair of upper and lower sheets and a pair of upper and lower panels laminated on a frame, respectively. A flexible substrate and a paper-like cell as a primary cell are provided in the equipment case. The paper-like cell has a pair of positive and negative electrode sheets and a power generating unit interposed therebetween. A sealing member seals the peripheries of the electrode sheets of the paper-like cell. The paper-like cell is received in a receptacle space formed in the frame. The flexible substrate is received in another receptacle space formed in the frame. The electrode sheets of the paper-like cell are electrically connected to terminals of the flexible substrate by means of a film-like connecting member. This compact card-like electronic equipment such as a calculator is thin and compact in size.

Abstract: A plunger operated switch having a normally closed pair of contacts and a normally open pair of contacts, the normally closed pair of contacts including a movable contact carried on the free end of a first cantilevered resilient leaf member biased to separate the contacts, the normally open pair of contacts including a movable contact carried on the free end of a second cantilevered resilient leaf member biased to bring the contacts together. An actuator projection on the plunger bears against the first leaf member at a location substantially aligned with the contact thereon, and a further actuator on the plunger bears against the free end of the second resilient leaf member. The plunger is biased to urge the normally closed pair of contacts closed and the normally open pair of contacts open by a spring which is sufficiently strong to overcome the biases of the resilient leaf members.

Abstract: An auxiliary contact for field or factory addition to a contactor or motor starter of the type including a housing wall and an operator element movable between alternate positions upon activation. The auxiliary contact includes a body of insulating material adapted to be detachably mounted on an outside surface of said housing wall of the contactor adjacent the movable operator element thereof. A fixed electrical contact is mounted in the body and includes an externally accessible connector and a movable electrical contact also mounted in the body, includes an externally accessible connector. The movable contact includes a cam that is positioned to engage the operator element upon movement thereof in order to make and break contact with the fixed contact in response to activation of said operator element.

Abstract: An electrical switch assembly has a pair of conducting resilient domes which snap inwardly to produce corresponding switching functions when downward pressure is applied at their respective centers and snap outwardly to produce opposite switching functions when the applied pressure is removed. The pair of domes are supported one within the other in spaced relation with their respective centers substantially in alignment. Pressure applying means, such as a push button, is mounted for movement in line with the aligned centers of the outer and inner domes to a first predetermined position to snap the outer dome inwardly and to a second predetermined position to snap the inner dome inwardly. The successive snapping actions of the two domes to produce corresponding switching functions provide respective stages of tactile feedback through the push button to the operator.

Abstract: A composite switch for starting and stopping the air conditioner of a vehicle and for changing the flow of air supplied by an air blower comprises a main switch, a selector switch, and an auxiliary switch that is connected in series with the main switch. The main switch is used to start and stop the air conditioner. The selector switch is used to change the flow of air. A selector member for switching the contacts of the auxiliary switch from one state to another is disposed opposite to an actuating member for shifting the contacts of the selector switch such that whenever the selector switch is in a certain position, the actuating member drives the selector member to open the main switch. Thus, whenever the blower is stopped, the air conditioner is stopped.

Abstract: A push and rocker action switch includes a pair of switchable contacts, either of which is switchable in response to a rocker motion of a depressible actuating member, and both of which are switchable at the same time in response to an overall push depression of the actuating member. The actuating member is positioned by an opening defined in a faceplate such that it is centrally supported by a resiliently yieldable pivot. The pivot and the switchable contacts are provided by raised portions in an elastomeric sheet material which is supported by a circuit board fastened to an underside of the faceplate.

Abstract: A switch block for automotive power windows has four seesaw switches and a push-button switch for breaking an electric circuit to simultaneously lock out the seesaw switches. The contact mechanisms of the seesaw switches and of the push-button switch are identical in structure so that they have an identical operating feel.

Abstract: A hand movement controller is described which permits a variety of control functions to be performed by single left or right handed operation, and is particularly suitable for handicapped persons. The controller comprises a base which is generally wedge-shaped in side elevation with a sloping top surface on which is located a movable palm support on which the hand rests. One or two rows of keys are symmetrically spaced about the front edge of the palm support for engagement by the fingers of the hand. The distance between the movable palm support and keys is adjustable so that it can support the fingers to permit them to pivot freely about the knuckles with minimal strain over a prolonged period of time. The spacing of the row or rows of keys about the palm support is designed to optimize reaction time for fast operation. In a preferred embodiment an outer row of five keys and an inner row of three keys are used and permit control of movement in three dimensions.

Abstract: Programming of a communications terminal is carried out by insertable programming members carrying a plurality of actuators. Each actuator has at least one and usually two actuating members which engage with a circuit to modify the electrical characteristics of the circuit. The actuating members themselves may contact conductor paths, connecting them selectively to a ground conductor, or interconnecting two conductor paths. The actuating members may actuate indirectly through an intermediate member. Actuating members can be at predetermined different positions along an actuator. Typically one programming member is associated with a push-button, the programming member, for example having two columns of four actuators. On depressing the push-button, the particular coding is rapidly scanned by the electronic circuitry and the particular service associated with that code is provided.

Abstract: A dual in-line package (DIP) switch includes movable terminals and fixed terminals all of which are inserted in a wafer by insert molding. The two rows of terminals have terminal portions including contact portions. The terminal portions of the two rows are disposed substantially parallel to each other and spaced apart a given distance within a casing in such a way that the corresponding contact portions can either make or break contact with each other.

Abstract: A composite switch equipped with a main switch whose contact is connected and disconnected by an operation member and a change-over switch whose contact is changed among plural positions. An auxiliary switch is provided in series with the main switch, whose switching member is positioned so that it is driven by a working member for operating the contact of the change-over switch.

Abstract: An electrical switch comprises a dielectric base member having parallel stationary contact assemblies provided with aligned contact segments, each of the contact segments including an exposed contact section and a dielectric section. A spring-biased movable contact assembly is disposed between the stationary contact assemblies and includes cantilevered arcuate contact sections springably engaging respective aligned contact segments. The exposed contact sections have parallel projections and the dielectric sections have a projection along which the arcuate contact sections move, one of the parallel projections being longer so that, when the arcuate contact sections move from the contact sections onto the dielectric sections or vice versa, the arcuate contact sections engage the longer projection last or first so that an electric arc, if it occurs, will occur therebetween rather than between the short projections and the arcuate contact sections.

Abstract: A switch for controlling wiper delay includes a housing, a circuit board having a contact pattern of several parts on a surface thereof positioned in the housing, some of the contact pattern parts being arranged in a closely-spaced, radially-extending array, a carriage rotatable in the housing, electrical contacts mounted on the carriage and disposed for engagement with selected parts of the contact pattern as a function of the position of the carriage, a discrete resistive element having at least three conductive leads extending therefrom and subdividing the resistive element into a resistor network having a plurality of resistive values, each conductive lead of the resistive element being conductively affixed to a respective one of the contact pattern parts in the array, and wherein the carriage is manually actuatable to place the electrical contact into contact with successive ones of the contact pattern parts in the array to vary the interval between sweeps of a wiper.

Abstract: A moldable, impulse operation synthetic resin keyboard, and a method of fabricating the same, are provided wherein the keyboard achieves essentially standard, tactile feed and feedback, mechanical N-key rollover protection and precise, reliable output. The keyboard includes a synthetic resin base plate having a plurality of elongated, cantilever mounted flippers, along with a plurality of elongated, laterally spaced, inwardly and opposedly extending, pivotal, key-supporting arms. Upon depression of a key, the associated flipper is deformed until a release point is reached, whereupon the flipper is disengaged, allowing the flipper to quickly return to its rest position. A keyboard output is developed as the flipper, during overtravel thereof past its rest position, strikes a signal-generating assembly.