Abstract: A variable resistor including a resistive element and a conductive element supported by a plate. Contacting terminals are provided on one or more ends of each element. A carriage is slidably supported above the elements and a conductive roller is supported from the carriage by a suspension member that biases the conductive roller against the elements. The effective length of the current path through the resistive element is varied by using the conductive roller to electrically connect the two elements to one another along different portions of their length. In a preferred embodiment, the carriage moves under the guidance of at least one guide bar and the conductive roller is suspended from the carriage by a coiled spring.

Abstract: A rotary potentiometer having a cylindrical or partially cylindrical resistance track and at least one electrode pair arranged at the resistance track's edges which are parallel to the cylinder axis. A tap is fixed to an adjusting component which is rotatable around and movable along the cylinder axis. The axial breadth of the resistance track correspondsd substantially to the stroke of the adjusting component along the cylinder axis. At the circumferential edges of the resistance track, at least one second electrode pair is arranged.

Abstract: A molded resin casing of a rotary- or sliding-type electronic part internally accommodating a board on which are formed electric conductor patterns slidingly contacted by contacts of a slider of the electronic part, wherein a flexible board having the electric conductor patterns formed on a film comprising a synthetic resin material is used as the board, and the flexible board is inserted inside the synthetic resin casing in such as manner that the electric conductor patterns are exposed to the interior of the casing.

Abstract: The wiper or movable contact of an electrical potentiometer employs fingers of an oval-like transverse cross section to increase the useful service life of the potentiometer in application such as a throttle position sensor where the potentiometer may be subjected to mechanical vibration, repeated random shock loading, constant movement, etc.

Abstract: A variable resistor whose resistance is adjustable by rotating a rotor on an insulating substrate having an arcuate resistive element. The rotor is formed of an insulating resin and includes an inner skirt and an outer skirt extending from a bottom surface thereof. The inner skirt contacts the upper surface of the insulating substrate inside the arcuate resistive element. A metallic slider is integrated with the rotor by insert molding. The slider comprises a base formed of a metal plate folded at least into two, and arms having contacts at the tips thereof for slidably contacting the resistive element on the insulating substrate. The arms are folded along lines which are parallel to a line extending from the center of the base to the contacts of the arms to cause the contacts to project toward the insulating substrate. One of the metal plates forming the base cooperates with the inner and outer skirts of the rotor to seal a space accommodating the resistive element and the arms of the slider.

Abstract: A component assembly, for constituting an electrical part such a volume unit, having a pair of appropriate components, such as those approximate to each other in electrical characteristic, joined as a unit by a connecting plate. In use, the pair of components are separated by severing the connecting plate and are then coupled together to provide the electrical part.

Abstract: A potentiometer for attachment to objects undergoing strong vibrations, such as the engine block of an internal combustion engine has an outer housing which is secured to the object and an inner housing which is largely positioned inside the outer housing. The two housings are connected by at least one springy damping member, such as an O-ring made of rubber and, at the same time, they are largely uncoupled with respect to vibrations.

Abstract: A method is described for providing electrically resistive elements for mounting in an electrical resistor device for engagement with a relatively movable contact member, as in a potentiometer. A pair of termination openings are formed through a substrate of insulating material such as plastic film. A release liner is applied to the undersurface of the substrate to cover the openings. An electrically conductive medium is applied in fluid (paste) form to the top surface of the substrate and is caused to fill the termination openings, as by applying pressure. The conductive medium is solidified and the release liner is removed. A resistive medium for ultimate engagement with the movable contact is applied to the top surface of the substrate in engagement with the termination openings. The resistive track is shaped as desired, either linear or an annular segment, preferably as part of final shaping steps which also remove the resistive element from a continuous strip of the substrate material.

Abstract: A component assembly, for constituting an electrical part such a volume unit, comprises a pair of appropriate components, such as those approximate to each other in electrical characteristic, joined as a unit by a connecting plate. In use, the pair of components are separated by severing the connecting plate and are then coupled together to provide the electrical part.

Abstract: A potentiometer includes a magnetoresistive element made of ferromagnetic material. A device applies a magnetic field to the magnetoresistive element. An absolute value of the magnetic field applied to the magnetoresistive element is equal to or greater than a saturation magnetic field with respect to the ferromagnetic magnetoresistive element. The magnetic field applying device is movable relative to the magnetoresistive element.

Abstract: A quasifixed variable resistor includes a resistor substrate with a resistor mounted thereon, a stopper plate rotatably retained about an axis on the substrate, and a knob having a slider fixed to an end of the stopper plate, the slider, sliding on the resistor. In a flat portion located at a bottom end of a cylindrical section of the stopper plate, a screwdriver engaging section having an adjusting groove is folded and is integrally formed therein. A wing piece branched by the adjusting groove is tapered in a direction toward the flat portion and a tip end of the screwdriver can be engaged with an end portion of the wing piece for adjustment.

Abstract: An arrangement for ensuring contact between resistance paths comprises a base of electrically non-conductive and elastically deformable material such as rubber. To the base is applied an electrically conductive coating. The resistance path is pressed against this layer by means of a covering element, the base being subjected to preloading. In this way, the contact can be ensured between a potentiometer resistance with terminal connections and a plug, around which a short-circuit interval is provided.

Abstract: A variable resistor of a type for mounting against the surface of a printed circuit substrate, the variable resistor having:an insulating substrate having one surface for supporting a resistor and an opposite surface for being positioned against the surface of a printed circuit substrate;a curved resistor on the one surface of the insulating substrate and having opposite ends;a sliding member rotatably mounted on the insulating substrate and sliding on the resistor;a plurality of outside electrodes on the insulating substrate, one for each end of the curved resistor, and extending from the corresponding end of the resistor along the one surface of the insulating substrate, along an edge of the insulating substrate, and along the opposite surface of the insulating substrate, each outside electrode having a three layer structure constituted by a lower layer against the insulating substrate, a middle layer and an outer layer, the lower layer being an electrically conductive material suitable for plating, the mid

Abstract: A contact for a rotary action variable resistor is formed of a length of wire coiled into a flattened, substantially annular spiral, with a wiper element provided by a radial protuberance on the spiral. A first embodiment has a protuberance along each of a first pair of diametrically-opposed radii. The spiral is eccentrically mounted on a substantially circular support plate, with one protuberance extending close to the peripheral edge thereof, and the other protuberance closer to the center of the plate. The spiral is attached to the plate along a second pair of diametrically-opposed radii approximately 90 degrees displaced from the first pair. The spiral is sloped so that the distance between the plate and the spiral gradually increases from the attachment radii to the protuberances. The protuberance near the edge of the plate is a resistive element wiper, and the protuberance nearer the center is the collector wiper.

Abstract: An electromechanical component, in particular a rotary potentiometer having an integrated center click or optionally more fixed intermediate positions. The fixed intermediate position is obtained by a combination of two teeth and a lug. The two teeth are integrated with the element of the resistance path and the lug with the element having the contact members of the component.

Abstract: An infinitely variable rotary resistor assembly has a substantially conventional rotary resistance element 1 mounted for rotation in a housing 2, on rotation of a projecting shaft 4. The resistance element 1 is biased to a predetermined position by spring means 14,15 mounted within the housing 2 on a shaft 6.In an alternative form of the invention, a substantially conventional rotary variable resistor 20 is biased to a predetermined position by a biasing device mounted over the housing of the rotary variable resistor 20 to snap engage therewith, and coupling with an accessible part 37 of a rotary resistance element in the resistor.

Abstract: A potentiometer, consisting of a general cylindrical shape, on the lateral surface of which it has two parallel projections, so that the lateral terminals are located with respect to said projections, the elements it comprises (slider-holder, slider, resistant track and collector) being located inside the frame. The slider-holder is guided in the frame by setting into a cut whereon there is a projection against which a projection of the slider-holder will butt, which has a new angular projection on which there are two pivots which will set into both holes of the slider for the fixing in-between. The slider is provided with two oval segments in an inclined position which will contact the resistant track. The slider and the collector are fixed to the slider-holder on some cuts provided therein. The slider is provided with two projections for contacting the collector, the latter having a circular crown shape.

Abstract: A narrowly-adjustable resistor has a slider rotatably mounted on a resistor base, a case containing the slider and the resistor base, and terminals connecting to the slider and the resistor base, respectively. Each terminal extends through the bottom of the case to the outside, its exposed extension part including a stem and a branch or branches extends to the sides of the case to permit soldering of the terminal to an electrode on the substrate.

Abstract: A variable resistor wherein the arm portion of a rotatable slider is in contact against an approximately circular arc-shaped resistor provided on a base plate with the central portion of the resistor, and the slider is provided with a driver plate having an approximately dish-shaped projection portion at its center, and an approximately ring-shaped arm portion having a contact portion, which are coupled to each other, are punched out from one sheet of conductive sheet metal, are turned up by 180.degree. at the coupling portion, with the projection portion being projected from the arm portion.

Abstract: A drive means of a rotary potentiometer is arranged to work trouble-free in the case of misalignment between the rotary axis of the rotating body and the rotary axis of the driving member. Teeth are arranged in the rotating, or rotary body, the crests of which teeth are directed to the rotary axis. The driving member is adjacent to the one flank of the one tooth and the one flank of the other tooth. The flanks of the teeth are involutely rounded off, so that the applied torque remains substantially constant in event of any misalignment of the driving member axis with respect to the body axis.

Abstract: A variable resistance switch utilizing a resistor network (40) and discrete electrical contacts. A thumbwheel position selector (50) having a detent follower (58) coacting with a series of detents (22) is utilized by an operator to feel the detent follower index between detents as the thumbwheel switch is rotated. Electrical contacts are made with discrete inputs to a resistor network for selecting a discrete resistance value based upon the position of the thumbwheel.

Abstract: A rotary potentiometer sensor is provided for detecting the angular position or movement of a rotary shaft, which includes, a joint of the Oldham type with, on the one hand, three rotary parts, namely a first part carried and driven in rotation by the shaft, a second part adapted for rotating inside the sensor of which it forms the rotary part and a third part, called intermediate part, disposed between the first and second parts and, on the other hand, means provided on these three parts for providing the homocinetic rotational drive of the intermediate part by the first part and of the second part by the intermediate part, while allowing free angular movement; and a case of a general cylindrical shape containing said rotating shaft and the three rotating parts of said joint, this case having two lateral faces one of which is completely closed by a cover integral with the case and the other of which has passing therethrough a circular tube integral with the case and whose internal bore receives the first par

Abstract: A rotary type electronic device has a stationary casing and an axially slidable and angularly rotatable shaft disposed in the casing. The end of the shaft is assembled to the end face of a detentable (heart-shaped) cam so that the shaft can be pushed axially to engage and disengage from a detent position within the casing. The end of the shaft is formed with a tapered conical tip portion, and the end face of the cam is formed with a central insertion hole, having a diameter smaller than the outer diameter of the conical tip portion, and with cutout portions on opposite sides adjacent the insertion hole forming deformable bridging portions therebetween which deform to allow insertion of the conical tip portion of the shaft in a direction perpendicular to the end face.

Abstract: The direct connection potentiometer includes a block of electrically insulative material having two opposite faces and an edge about the perimeter of the faces. An electroresistive track is provided in an arc on the front face of the block, radially spaced from a ring-shaped conductive area provided on that face. Conductive strips extend from each end of the track, and from the ring-shaped conductive area to the perimeter of the front face, where each, spaced from the others, wraps around the edge of the block to its rear face. A rotatable cursor, i.e. a slide is mounted to the block centrally of the ring-shaped conductive area and connects the ring-shaped conductive area with a selected arcuately short portion of the electroresistive track.

Abstract: In a potentiometer selector switch, it is proposed to arrange on a circuit board, in indirect arrangement, longitudinal contacts consisting of wire bridges which are swept by the wiper of a regulating element forming the actuating element of the switch when the wiper is rotated or displaced. The wire bridges forming the longitudinal contacts are insulated from each other on one side of the circuit board and at least one end of each of the bridges passes through the board to the conductor side where it is connected electrically and fixed mechanically, preferably by dip soldering.

Abstract: A trimming resistor is provided including a housing formed with a central through bore in which a rotary driver is supported for rotation. The rotary driver supports a spring ring which has a resilient tongue to press a small contact plate against a resistance plate provided with brush tracks. The rotary driver interfits with the spring ring as well as the small contact plate.

Abstract: An electric potentiometer including a wiper lever having brush wipers, which upon a rotational movement about a pivot shaft sweep over electrically conductive layers applied to a carrier plate. A resistor layer is joined at one end to a connection layer and at the other to a grounded connection layer. The layer is joined at one end to a pickup connection layer and at the other, via a supplementary layer resistor, to the connection layer. A sliding layer of electrically non-conductive paste material is disposed between the carrier plate and the resistor layer, the latter of which is formed from a paste material provided with carbon particles. The sliding layer is wider than the width of the wiper and the resistor layer.

Abstract: A high density miniature sensor circuit useful for measuring pressure changes in a fluid in a closed chamber, comprising a high density of resistor segments gapped about 0.002 inches and conductors as contact pads which conductors are permanently affixed to a ceramic substrate is disclosed.

Abstract: A potentiometer which can be used for measurement of angles includes an enclosure made of insulating material. The enclosure has a positioning portion comprising a pair of grooves to guide a resistance base plate into the enclosure. The enclosure is provided with a recess extending perpendicular to the plane of the base plate to rotatably receive the shaft portion of a sliding member. This sliding member further includes a slider which is brought into sliding contact with electrodes formed on the base plate. This produces a change in the resistance of a resistance member formed on the base plate.

Abstract: A potentiometer comprises a housing having a resistance element disposed therewithin, a spur gear rotatably housed within the housing and drivingly engaged with a worm gear that is rotatably supported by the housing for rotating the spur gear when such worm gear is externally turned. A resilient wiper assembly carried by the spur gear for rotation therewith sweeps the resistance element and applies a resilient force to the spur gear to urge the latter in a direction away from the resistance element. The spur gear has a toothless area defined at a portion of the toothed periphery thereof which corresponds in position to one end of the resistance element. The toothless area has a tapered face engageable with the worm gear to displace the spur gear in the opposite direction against the resiliency of the wiper assembly when the wiper means is brought to the end of the resistance element wherefore the spur gear can be disengaged from the worm gear.

Abstract: An electric potentiometer is proposed, which serves to convert a displacement movement into an electrical signal. The electric potentiometer has a wiper lever with brush wipers which upon a rotational movement about a pivot shaft stroke electrically conductive layers applied to a carrier plate. An electrically nonconductive layer is applied on the resistor layer such that in the region of the electrically conductive layer that is strokable by the wiper upon its deflection, a pickup zone which is narrower than the wiper and is defined on both sides by the electrically nonconductive layer remains uncovered by the electrically nonconductive layer.

Abstract: A variable electrical resistance device for monitoring displacement of a mechanical component such as a vehicle road wheel suspension system having a housing; an electrically resistive track and conductive slip ring on a support in the housing; electrically conductive wipers on a rotatable carrier provided with a spindle for coupling to the component. The wipers traverse the resistive track and the slip ring respectively. The support is mounted on springs or flat strips of resilient metal, so as to be displaceable away from and towards the wipers. A solenoid, of double-acting type or acting in association with the bias of the springs, has an armature operating to effect displacement of the support away from and towards the wiper whereby contact between the wiper and track may be broken, or the contact pressure therebetween reduced, when monitoring is not required, thereby prolonging the life of the wiper and track assembly.

Abstract: A stationary case has a resistive track. An elastic wiper is carried by a rotor mounted to rotate in the case and able, during operation, to rub against the resistive track, and a spring is placed between the stationary case and the rotor to pull the rotor to a rest position. The case provides at least one housing able to receive the wiper without initial stress or deformation in an initial position of introduction of the rotor in the case and to allow the wiper to come in contact with the track during mounting of the rotor in the case by rotation of said rotor between its introduction position and its rest position. Application is to measuring the angular position of the throttle valve of an internal combustion engine.

Abstract: A variable resistor for use in a frequency regulator comprises an actuator having an intermediate portion pivotally supported by a casing, and a pair of opposite actuating end portions exposed from the casing. A pair of opposite feed pawls depend from the actuator to engage a rotor pivotally supported by the casing between the opposite feed pawls. The rotor has on peripheral edges thereof teeth meshing with the feed pawls, and carries a slider. A resistor base plate is mounted on the casing and has an arcuate resistor layer facing the slider of the rotor. The actuator is angularly movable in response to depression of one at a time of the actuating end portions thereof for turning the rotor in one direction through meshing engagement between the feed pawls and the teeth to thereby cause the slider to slide on the arcuate resistor layer. Therefore, the resistance of the variable resistor can be varied simply by pushing the actuator angularly back and forth.

Abstract: A rotary operation type miniaturized electronic component for use in video and audio electronic appliances, etc., including a casing formed with an opening and a rotary member. In the electronic component, a metal plate is integrally molded with the casing at a bottom face of the casing and then, is cut so as to form two conductive plates, two terminals for external takeoff, and two legs for mounting the casing on a printed circuit board, while a metal sheet is integrally molded with the rotary member and then, is cut so as to form two rotary sliders. Thus, it becomes possible to perform automatic soldering of the electronic component to the printed circuit board.

Abstract: An arcuate film resistor is defined on an insulating substrate. During use, a high voltage is impressed across end terminals connected to the arcuate film resistor. A central electrode is located on the insulated substrate at a point which is surrounded by the film resistor. The central electrode is formed of a non-film resistor material and has superior adherability to the substrate. A disk-shaped film resistor is deposited at the center of the central electrode and second ring-like film resistor is formed around the outer periphery of the central electrode. A rotatable slider has a first contact positioned over the disk-shaped film resistor and a second contact which slides along the arcuate film resistor. A portion of the voltage from the arcuate film resistor can thus be transferred to the central electrode. The disk-shaped film resistor located on the central electrode improves the contact between the slider at the central electrode.

Abstract: A single-turn miniature potentiometer includes a first substrate having an annular conductive track formed thereon and a second substrate facing the first and having an annular resistive track formed thereon. An insulating layer is placed between the two substrates and has an opening provided therein for receiving a disk-like rotor which bears an electrically conductive wiper for simultaneously contacting both the conductive and resistive tracks. Electrical connections are made between the resistive and conductive tracks by means of external U-shaped clips.

Abstract: A slider arrangement comprises an insulator member, and two sliders each made of a resilient metal matel plate embedded in the insulator member and each having slender contacts exposed from the insulator mold member. The slender contacts of each of the sliders forms a pair of contact sets adapted to slide in contact with a resistive element and a collector member respectively, the pair of contact sets of one slider being located between the pair of contact sets of the other slider. A method of producing the above-mentioned slider arrangement comprises the steps of embedding a resilient metal plate having sliders into an insulator member, with contact forming portions of the sliders exposed, cutting off portions bridging the sliders and the contacts formed at the contact forming portions while holding the metal plate by the insulator member, and bending each of the contacts to its proper position.

Abstract: An electric potentiometer is proposed which serves to convert a mechanical movement into an electrical value. The potentiometer includes a pickup embodied as a wiper and a resistor pad which has a plurality of connections for parallel resistors distributed over the displacement range of the pickup and serving as support points. With these parallel resistors, the partial resistance established by the pickup can be varied to a predetermined course. The support points extend crosswise to the contact track of the pickup on the resistor pad and are embodied as only so long that they terminate before reaching the contact track.

Abstract: A thick film variable resistance assembly, such as for a cathode ray tube, having an improved contactor knob.

Abstract: A rotary resistor or rheostat used in hearing aids worn behind the ear. Such an application necessitates a small, compact arrangement. The arrangement is provided with a supporting surface acting as a substrate with the prerequisite conductors or resistances applied to the support surface.

Abstract: A high-voltage variable resistor including a substrate, a sliding member provided so as to be rotated in sliding contact with the substrate, a casing for accommodating the substrate and sliding member in it, a plurality of connecting terminals connected to the substrate and sliding member, and a rotational rod coupled with the sliding member. The resistor further includes a plurality of springs for electrically connecting, respectively, the connecting terminals to the substrate so that the connecting terminals may be disposed in parallel with opposite surfaces of the substrate.

Abstract: A variable resistor including an insulating substrate carrying a resistor layer and a rotatable slider has an insulating spacer separating the slider from the insulating substrate by an appropriate distance. The insulating spacer is formed of a synthetic resin molded directly on one surface of the slider and is integrally secured to the slider by having portions of the resin extending through holes formed in the slider. Thus, the number of overall components of the resistor is reduced to facilitate assembly and make management of the components easier.

Abstract: An improved variable resistor for use in electrical and electronic equipment which includes a substrate having fixed side terminals integrally molded in it so that forward end portions of the fixed side terminals are exposed to the surface of the substrate, a resistant layer formed on the surface of the substrate so as to cover the exposed forward end portions of the fixed side terminals at opposite end portions of the resistant layer, a variable side terminal provided on the substrate, and a slider movably disposed on the substrate for sliding movement over the resistant layer so as to adjust resistance of the variable resistor and in which the fixed side terminals are applied with solder coating at their predetermined portions except for the exposed forward end portions.

Abstract: A ratcheting mechanism for a multiturn variable resistance device, of the worm screw-actuated type, has mutually engageable stopping members on the rotor and in the housing, limiting rotor travel beyond first and second limits. The stopping member in the housing has an inclined surface on one side which pivotally lifts the rotor against the force of the electrical contact spring (carried on one side of the rotor in contact with a resistive element), when the rotor reaches the first limit of travel. The pivoting action compresses the contact spring while allowing the spur gears on the rotor momentarily to disengage from the worm gear. This disengagement releases the spring, which then urges the rotor back into a gear-engaging position. The rotor is provided with at least one axially-shortened spur gear tooth positioned so as to be engageable with the worm gear when the rotor is at the second limit of travel.

Abstract: A regulator is provided which includes a housing, a seesaw-like operating member supported by the housing, a projection provided on the operating member, two movable members rotatably supported by the housing to push back the projection in a predetermined direction, a spring secured to these movable members to bias them in opposite directions, and limit member provided on the housing to determine the approach limit amount of the two movable members, a resistor provided on the housing, and a sliding brush coupled to the operating member to slide on the resistor.

Abstract: A rotary variable resistor wherein a pair of levers are arranged in a case, a knife-shaped cam has its one end pivotally mounted on a projection of each lever, and the cam comes into engagement with a tooth portion of a toothed wheel in accordance with the operation of the lever so as to turn a slider holder. The moving stroke of the lever can be made small, and the slider holder can be turned every small angle.

Abstract: A porcelain enamel steel substrate is used to carry a resistive path.

Abstract: A slidewire wiper contact has a wiper arm mounted at one end on a rotatable shaft while the other end of the arm carries an electrically conductive support extending past the end of the arm. A free end of the electrically conductive support has attached thereto a plurality of substantially constant outer diameter coils of electrically conductive wire. The coils are arranged in a continuous spiral while the electrically conductive support is attached thereto by a low resistance connection extending along a line on an outer surface of the coils. Electrical connection means are attached to the electrically conductive support for movement therewith during rotation of the wiper arm to maintain an electrical connection to the conductive support.

Abstract: A trimmer potentiometer or like variable resistor, which is of the kind having a worm 21 driving an elastomeric worm wheel 10 carrying a wiper contact to slide on an arcuate resistance element, has the gear teeth formed on circumferentially-spaced rim sections 23, 24, 25 projecting cantileverwise from an axially thick unbroken rim 10b of a radial flange on the main body 10c of the wheel, some sections 23 having only a few gear teeth and being separated by sections 24, 25 having larger numbers of gear teeth. The extent of rotation of the wheel 10 is limited to less than 360.degree. and the sections 23 with few teeth are arranged to be in mesh with the worm at the limits of wheel rotation so as to give a de-clutching effect by inward deflection of these sections on over rotation of the worm.