Abstract: A manufacturing method of a fluid pressure cylinder includes inserting the sensor rod into a hole extending in the piston rod, holding the sensor body with respect to the piston rod by using a holding member mounted on the piston rod, inserting the piston rod into the cylinder tube, and fixing the sensor body to the cylinder tube by fixing the holding member to the cylinder tube.

Abstract: A slide type variable resistor with a resistance adjusting member, comprising a housing, two side rails, a circuit module, a control member and a base. The housing includes a housing limiting hole and a space. The two side rails are disposed in the space. The circuit module is disposed in the space and has a resistive circuit. The control member is disposed in the space. The control member includes an object, at least one metal brush, a handle and an elastic member. The object having a bump, and the elastic member is sleeved at the bump.

Abstract: A variable resistor with a light emitting element includes a circuit board, a housing and a slide assembly. The circuit board extending in a longitudinal direction has a circuit arrangement surface to arrange thereon a resistive circuit and a power circuit. The housing fixed to the circuit board so as to form a slide space has a sliding slot extending in the longitudinal direction. The slide assembly further includes a slidable member, a fader set, a light emitting element, a resistive circuit brush and two light-emitting element brushes. The fader set fixed at the slidable member penetrates the sliding slot. The light emitting element in an accommodating groove of the slidable member projects a light beam toward the fader set. The resistive circuit brush electrically connects the resistive circuit. The two light-emitting element brushes electrically bridge the power circuit and the light emitting element.

Abstract: Apparatus and method for determining: proper operation of a cleaning system, the depth of liquid in a drum, the predicted failure of a pump, improving the ability to monitor cleaning system, improving the ability to monitor dairy wash systems, improving the ability to monitor animal husbandry systems, and/or increasing the efficiency with which various types of equipment, fluid levels, and/or systems can be serviced or monitored.

Abstract: A variable resistor includes a shell, an inverted circuit module, and a manipulating device. The shell has a shell position restriction hole and an allocation space linked to the shell position restriction hole. The inverted circuit module is fixed in the allocation space and includes a circuit board and a plurality of connecting ends located on the circuit board. The circuit board has a circuit board position restriction hole and a resistance circuit on a rear surface thereof. The manipulating device is slidably assembled in the allocation space and includes a brush base, at least a metal brush, and a bar. The metal brush is fixed on a front surface of the brush base and elastically presses against the resistance circuit. The bar is connected to the brush base and extended outward through the circuit board position restriction hole and the shell position restriction hole.

Abstract: A position sensor, preferably an angle sensor for detecting the rotational angle of a shaft. The position sensor has a lead frame on which the electronic components of the position sensor are arranged and to which they are electrically connected A plastic encapsulation enclosing at least the electronic components, thereby forming a sensor module with the lead frame, and a plurality of electrical connections of the sensor module which are formed by the lead frame and a carrier module accommodating the sensor module. The carrier module has electrical connections connected to the electrical connections of the sensor module in an electrically conducting manner. The carrier module has at least two domes between which the sensor module is arranged. The respective free ends of the domes are deformed in such manner that the sensor module is clamped fixed in its position.

Abstract: The present invention is directed to a potentiometer having enhanced reliability and durability, capable of being unlimitedly used in a high-temperature environment inside a flying object (air vehicle). Said potentiometer comprises: a consecutive type potentiometer having a structure that a resistor is formed of a material having an excellent stability in a high-temperature environment, and having an excellent surface hardness so as to have a high resistance to damages; and a discrete type potentiometer having a structure that a resistor is protected by a passivation layer, and through holes are formed at the passivation layer for electrical connection with the outside, and the through holes are filled with a conductive material.

Abstract: A voltage divider for high precision voltage measurement has one or more pair of potentiometers. The wipers of each pair of potentiometers are ganged so that the sum of their resistances relative to a first end of the respective potentiometer is a constant. An output potentiometer or a pair of resistors provide an output for measuring the output voltage. The resolution of the voltage divider is the product of the resolution of each potentiometer pair and the output potentiometer.

Abstract: A method for monitoring a the contact resistance (Rs) of the wiper of a sensor for a variable quantity, with a potentiometer (2), in which the position of the center tap (3) determines the value of the quantity, is improved in such a way that, first, when the sensor is used in an automatic control circuit, no control deviations occur and, second, the contact resistance of the wiper can be monitored with precision. This is achieved by the cyclic switching-on of a load (RLast), so that the contact resistance (Rs) of the wiper can be determined on the basis of the change in the voltage divider ratio.

Abstract: A load control device has a modular assembly to allow for easy adjustment of the aesthetic and the color of the load control device after installation. The load control device comprises a user interface module and a base module. The user interface module includes an actuation member for receiving a user input and a visual display for providing feedback to the user. A connector of the base module is adapted to be coupled to a connector of the user interface module, such that the base module and the user interface module are electrically connected. The connector of the base module is adapted to move along a longitudinal axis and a lateral axis of the dimmer, such that the actuation member is easily aligned within an opening of a faceplate.

Abstract: A dual resistor for eliminating the requirement for two different value resistors. The dual resistor includes a conditioning resistor at a high resistance value and a run resistor at a low resistance value. The run resistor can travel inside the conditioning resistor. The run resistor is capable of being advanced by a drive assembly until an electrical path is completed through the run resistor thereby shorting out the conditioning resistor and allowing the lower resistance run resistor to take over as the current carrier.

Abstract: A terminal plate is formed with a wide portion and a narrow portion. The wide portion, to be insert-molded by a housing of a synthetic resin, is opened by an elongate blank hole having an inner peripheral surface parallel with a side shape thereof, thereby forming two divisional parts on the both sides thereof. The divisional part is given by a width s1 narrower than a width s2 of the narrow portion, wherein the total width (s1×2) of the two divisional parts is made equal to the width s2 of the narrow portion. Grooves can be formed on the main and back surfaces of the divisional parts.

Abstract: The present invention provides an EGR sensor capable of stably holding the actuating shaft of a product without increasing the length of the actuating shaft in the longitudinal direction and shorting the movable range of the actuating shaft, and capable of preventing water stagnated in the EGR sensor from affecting contacting portions of the conductive parts. The EGR sensor comprises a substrate having a slider and a plurality of external lead-out terminals and electrodes, a bearing having an actuating shaft passing there through, and a casing having a receiving portion for receiving the substrate and the slider. A communicating passage comprising a groove or a hole is provided at the side of the bearing. The communicating passage leads to the insertion hole from the inside of the receiving portion. The moisture stagnated in the receiving portion is drained through the communicating passage to the outside.

Abstract: In a motor-driven slide type variable resistor, the tensioning of a toothed loop belt joined to an operating lever is adjusted with a pin adjusted to change the distance between a toothed pulley and a follower pulley in order to adjust a traveling speed of the operating lever.

Abstract: A variable-resistance element exhibiting high wear resistance and superior microlinearity includes a resistor constituted from a first resistive layer containing a first reinforcing material and a second resistive layer containing conductive carbon black and a second reinforcing material, the second resistive layer being disposed on the first resistive layer. The first reinforcing material is pulverized carbon fibers having an average particle size of 3 ?m. The second reinforcing material is thermal black having an average particle size of 0.35 ?m.

Abstract: On a surface of a transfer sheet, a resistor paste is first patterned, and a binder resin thereof is then heat-cured to form resistor layers. Next, an electrode paste containing a binder resin, which has a thermosetting temperature lower than a thermosetting temperature and a glass transition temperature of the binder resin of the resistor layers, is patterned on surfaces of the resistor layers and is then heat-cured, thereby forming electrode layers. By the steps described above, powdered silver contained in the electrode layers is unlikely to ooze into the resistor layers.

Abstract: A potentiometer, used in particular as a position sensor or position transducer is disclosed, which has at least one wiper path and one wiper that has at least one contact element (19), resting with a contact face (20) on the wiper path and electrically contacting the wiper path; the wiper and the wiper path are movable toward one another. To reduce costs by reducing the amount of noble metal used for the contacting in the potentiometer, the contact element (19) has an electrically conductive core (21) and a noble metal jacket (22), surrounding the core (21), whose annular end face at least partly forms the contact face (20) (FIG. 4).

Abstract: A plated precision potentiometer (PPP), consists of resistance plates, disc, a screw, springs and a cylinder to enclose all moving parts. The PPP will produce a resistance determined by the location of the disc on the plates. The disc will travel on the screw; the change in location of the disc will adjust the resistance value proportionally to the distance it travels.

Abstract: In a motor-driven slide type variable resistor, the tensioning of a toothed loop belt joined to an operating lever is adjusted with a pin adjusted to change the distance between a toothed pulley and a follower pulley in order to adjust a traveling speed of the operating lever.

Abstract: A switch for electric hand-tools includes: a switch housing with a switching device arranged therein; and a carriage arranged movably in the housing and which is drivable by a trigger connected thereto. The carriage is provided with at least one slider for sliding over a potentiometer track and with at least one movable contact of a mechanical switch. The switch housing is provided with an electrical connecting system which, when a module is arranged on the switch housing, is adapted to form an electrical connection between the switch housing and the module. The switch housing with the switching device arranged therein can be adapted, by connecting a module thereto, to provide an additional switch function and to adapt to a specific method of connection of the wires to be connected to the switch.

Abstract: The present invention provides a linear operation type electric part in which a spring member for restoring the movement of a movable member and a spring member for preventing the backlash of the movable member are formed of the same kind of coil spring, thereby reducing the number of part used therefore, and enabling lower cost and increased productivity, and in which a movable member can be moved smoothly. The linear operation type electric part of the present invention includes the spring assembly, composed of the spring member for restoring the movable member from its movement and the spring member for preventing the movable member from backlash, both formed of the same type of coil springs. Therefore, it is possible to provide a linear operation type electric part which, when compared to conventional counterparts, requires fewer parts, thus providing lower cost and increased productivity. Moreover, in the present invention, the spring member does not slide along the case as in conventional counterparts.

Abstract: An operating shaft is provided in its rear side portion with a convex portion protruding from a shaft portion in the direction orthogonal to an axial direction. A bearing portion is provided with a concave portion connected to a hole through which the shaft portion is inserted and allowing the convex portion to be inserted therethrough in the axial direction. The convex portion protruding from a rear end of the bearing portion is retained to the rear end of the bearing portion other than the concave portion. The operating shaft can be finally assembled. Like a coil spring, a movable member, and a cover, the operating shaft can be assembled in a stacking manner. It is thus possible to provide an EGR sensor which has good productivity and is inexpensive, as compared with a conventional EGR sensor.

Abstract: A switch mechanism for an electrical slide switch that has a detenting or clicking action is disclosed. The switch mechanism provides such detenting action in a mechanism that has a switch lever that moves through an arcuate path of movement and provides a uniform resistance to movement through the entire range of movement of the switch lever.

Abstract: The present invention provides a linear operation type electric part in which a spring member for restoring the movement of a movable member and a spring member for preventing the backlash of the movable member are formed of the same kind of coil spring, thereby reducing the number of part used therefor, and enabling lower cost and increased productivity, and in which a movable member can be moved smoothly. The linear operation type electric part of the present invention includes the spring member, composed of the spring member for restoring the movable member from its movement and the spring member for preventing the movable member from backlash, both formed of the same type of coil springs. Therefore, it is possible to provide a linear operation type electric part which, when compared to conventional counterparts, requires fewer parts, thus enabling lower price and increased productivity.

Abstract: An operating shaft is provided in its rear side portion with a convex portion protruding from a shaft portion in the direction orthogonal to an axial direction. A bearing portion is provided with a concave portion connected to a hole through which the shaft portion is inserted and allowing the convex portion to be inserted therethrough in the axial direction. The convex portion protruding from a rear end of the bearing portion is retained to the rear end of the bearing portion other than the concave portion. The operating shaft can be finally assembled. Like a coil spring, a movable member, and a cover, the operating shaft can be assembled in a stacking manner. It is thus possible to provide an EGR sensor which has good productivity and is inexpensive, as compared with a conventional EGR sensor.

Abstract: A linear sliding variable resistor comprises a case with a through hole; an operating shaft inserted in the through hole and axially movably locked; an insulated board located in the case and having an electrically conductive pattern on the surface thereof; a sliding contact which slides on the pattern; and a sliding contact retainer which retains the sliding contact and is fixed on the operating shaft. The sliding contact retainer is provided with a pair of snap legs and a retaining portion having a U-sectional recess; and the operating shaft is held by the recess of the retaining portion and the snap legs.

Abstract: The present invention presents an electrical control box which provides a common platform for either a sliding switch or a toggling switch. The present invention uses the same PC board for both types of operation. A common wrap around heat sink provides a large surface area for dissipating heat. The present invention allows a triac to be mounted in close proximity on the circuit board of the electrical control box rather than toward the front surface of the electrical control box so as to simplify assembly. Screws for attaching to external wiring are mounted on the back body.

Abstract: A wiper for use in a system for monitoring fluid level in a fluid storage container. The wiper has a body portion, a first lengthwise end, a second lengthwise end, a first side, a second side opposite the first side, a width and a pair of resilient contact members electrically connected to one another. Each contact member extends from a corresponding side of the body portion. The wiper also has a guide portion attached to the first lengthwise end. The guide portion has a width larger than the width of the body portion. The wiper includes a recess formed in each side of the body portion for receiving a corresponding resilient contact member thereby allowing the resilient contact members to be compressed so as to be substantially flush with the body portion. In one embodiment, the recesses extend through the guide portion. In one embodiment. the wiper includes an electrically conductive member that has a portion thereof that is embedded in the body portion.

Abstract: An angle sensor in which, when a biasing member is used, a biasing force in the &bgr;2 direction acts on a driving gear, and a biasing force in the &bgr;1 direction acts on an auxiliary gear. This prevents backlash from occurring between a rotary member and the driving member, making it possible to reduce rattling between the rotary member and the driving member. A fitting member is provided at the free end side of a resilient supporting member in order to resiliently press a screw shaft in the Z1 direction. Therefore, internal threads of inside surfaces of corresponding fitting portions of the fitting member and thread grooves of the screw shaft can be made to uniformly closely contact each other, making it possible reduce rattling caused by backlash therebetween. Consequently, the angle of rotation of a steering wheel which is mounted to the rotary member is detected with high precision.

Abstract: A variable resistor for increased assembly efficiency and decreased influence by environmental changes is disclosed. The variable resistor includes a closed end main casing, an external terminal held in the main casing and connected to the insulating substrate, a side receiver movably held in the casing, a shaft for moving the slider receiver, and a cover for closing an opening of the casing. The shaft is supported by a bearing formed on the cover to protrude from the cover and is further provided with a fall-preventive means. The terminal and substrate are both connected on the opening side of the casing.

Abstract: Straight-line potentiometer including a casing with a longitudinal opening in which slides a carrier having an electroconductive slider which provides electrical contact between an electroconductive slideway and an electroresistive slideway. The slider is provided with a centrally disposed offset portion which is inserted between the lugs of the carrier. The slideways are arranged on opposite sides of the longitudinal opening and run parallel to the opening. The carrier is made up of an operating stem and two resilient lugs, arranged so as to form a fork, extending through the longitudinal opening. The ends of the lugs are further provided with toes which engage the inner edges of the longitudinal opening and allow the carrier and slider to smoothly slide along the opening. The improved straight-line potentiometer is also provided with a plurality of resilient grips situated on opposite ends of the longitudinal line of the carrier and engaging lateral sectors of the slider in a riding arrangement.

Abstract: A variable resistor includes a circuit board having a conductive layer and a plurality of impedance layers arranged under the conductive layer, a slide having a metal contact plate movably mounted over the conductive layer and the impedance layers, wherein the impedance layers and the conductive layer have electric contacts respectively connected to circuit devices, output potentials at the electric contacts being relatively changed when the slide is moved with over the metal conductive layer and the impedance layers thereby controlling current flowing through the circuit devices.

Abstract: A solenoid is provided having a housing with a housing bore with a central axis. The housing bore opens at an opening in the housing at a first end. The solenoid further has an actuator extending from the opening, and which is sized to movably slide within the housing bore and within the opening along the central axis. A biasing member is provided in the solenoid for cooperating with the actuator and for biasing the actuator in a direction along the central axis. The solenoid also has an indicator positioned within the housing. The indicator cooperates with the actuator for relative movement therewith, and has an indicator path. An indication receiver is positioned within the housing, and located adjacent the indicator and the indicator path, for generating a signal that is representative of the position of the indicator and the position of the actuator. A method of manufacturing the solenoid is also provided, and includes the step of aligning the indication receiver within a recess in the housing.

Abstract: A sensor comprises a casing closed with a cover having a bearing section; an axially movable operating shaft supported on the bearing section; and a slider receiver in contact with the forward end of the operating shaft within the casing. A first return spring in elastic contact with the operating shaft and the second return spring in elastic contact with the slider receiver are disposed within the casing.

Abstract: A resistive sensing system is provided for determining the size of print media which has been loaded into an input member inkjet printing mechanism for printing. The media is typically has length and width dimensions, and the printing mechanism has sliding length and width size adjusters which are pushed into contact with the media edges to secure the media in the input member for printing. The length and width size adjusters each have sliding contacts which engage an energized conductive strip at a location corresponding to the position of the size adjusters. The printing mechanism has a controller that interprets an electrical signal received from the sliding contacts to determine what size of media is loaded in the printing mechanism. An inkjet printing mechanism having such a resistive media size sensing system is also provided, along with a method of determining the size of media loaded into the printing mechanism.

Abstract: Use is made of thermoplastic materials in layered configurations as a thermally stable, rigid but not brittle strip of lengths of six inches to ten feet or more. The layered strip contains layers of conductive fibers in a resin matrix, which, through use of appropriate contact mechanisms and wiring, provide an assembly with an infinite potentiometer scale. The strips are especially useful in linear positioning indicators such as pneumatic and hydraulic cylinder and liquid level gauges. The strips are conductively connected by cutting a bias surface relative to said strips and placing resin thereon.

Abstract: A composite tube transducer cylinder is manufactured from molded material in which embedded strips of resistive and conductive material are exposed to the inside surface and wherein a piston operating within the cylinder may make contact between a conductive and a resistive strip as a means for determining piston position.

Abstract: A variable resistor includes a first housing, a second housing formed of resin and having a connector part and a circuit board whose surface has an electrode and a resistance pattern thereon. A metallic terminal is molded in the second housing as one body and a brush is mounted on a moving member and is disposed in sliding engagement with the resistance pattern. An end of the terminal is in contact with the electrode on the surface of the circuit board and the other end of the terminal is disposed in the connector part.

Abstract: A rail 30, having a long groove 31 on an upper surface thereof, is disposed in a space between an upper surface of cover 28 having an elongated hole 29 and an insulating substrate 21. With this arrangement, water or the like, entering from the upper part of cover 28, falls directly or via a groove 27a formed on an upper surface of a slider 25 and is settled or accumulated in long groove 31 of rail 30. Excellent dust-protective and waterproofing effects are obtained. Furthermore, these entering substances are drained via long groove 31 of rail 30, preventing them from spraying out to uncertain places.

Abstract: Use is made of thermoplastic materials in layered configurations as a thermally stable, rigid but not brittle strip of lengths of six inches to ten feet or more. The layered strip contains layers of conductive fibers in a resin matrix, which, through use of appropriate contact mechanisms and wiring, provide an assembly with an infinite potentiometer scale. The strips are especially useful in linear positioning indicators such as pneumatic and hydraulic cylinder and liquid level gauges.

Abstract: A linear motion electric component with screw-actuated wiper is disclosed with a shaft member having a shaft portion of synthetic resin formed on an end of a metal pipe shaft. The shaft portion is fitted in a bearing portion, thereby insuring smooth rotation of the shaft member with low cost.

Abstract: The present invention provides a sliding type variable resistor in which the shaking of a knob portion is prevented, and in which the slider is able to slide smoothly. A sliding type variable resistor is provided having a structure comprising a resin substrate having a carbon film resistor printed on the surface in a straight line and lead terminals for external lines, a slider having a main body portion provided with a sliding shoe which slides in abutment against the carbon film resistor and a knob portion, and a frame body which holds the slider main body portion and the resin substrate inside and in which only the knob portion of the slider protrudes outside. A guide rail is provided in parallel to the sliding direction of the slider on the side surface of the frame body and a depressed part which is to be engaged with the above-mentioned guide rail is provided on the side surface of the slider main body portion.

Abstract: A floating pin joint is provided for coupling a linear potentiometer to a machine for measuring relative movement between first and second component parts of the machine. The potentiometer has an elongated housing securable to the first component part and a drive actuator slidably attached to the housing. In one embodiment, the floating pin joint includes a bushing, an actuator rod and a spring. The bushing can be positioned in a mounting hole on the drive actuator with an annular bearing surface disposed at one end of the bushing facing outwardly from the mounting hole. The actuator rod has a flange disposed between a first end and second end which contacts the bearing surface when the second end of the rod is extended through the bushing. The spring attaches to the second end of the rod for maintaining the flange in contact with the bearing surface.

Abstract: A wiper and a rotor are held to be rotatable with respect to a substrate which is provided on its one major surface with an arcuately extending resistive element. A contact member sliding along the resistive element is formed by bending a portion integrally extending from a wiper body. The wiper is integrally provided with a detent member, which is so formed as to bridge two points of a peripheral edge portion of the wiper body. The detent member engages with the rotor, thereby providing a clutch mechanism for stably transmitting rotation of the rotor to the wiper for rotating the rotor and the wiper along with each other until the wiper is inhibited from the rotation.

Abstract: To reliably maintain an EMI grounding connection between a sheet metal computer chassis wall and a computer cover wall that may be removably placed against the outer side of the chassis wall, a lance structure is formed in the chassis wall, and opposing installation notches are formed in the chassis wall on opposite sides of the lance opening. Transversely enlarged end portions of an elongated arcuate sheet metal grounding strip are inserted inwardly through the wall notches and captively retained within the lance structure with a longitudinally intermediate portion of the arcuate strip body extending outwardly through the chassis wall lance opening. When the cover wall is operatively installed on the chassis wall the grounding strip is resiliently flattened and compressed between the lance strip and the installed cover wall to maintain an EMI grounding path between the contiguous chassis and cover walls.

Abstract: A wallbox-mountable system for controlling electrical power to a load is disclosed. The system comprises a yoke, a frame, a toggle switch and at least one slidable lever. The yoke has an opening which is completely occupied by the frame member and the frame member has at least one channel. The toggle switch has a its handle extending through the frame and has one end mechanically coupled to a means for turning power on and off to a load. The slidable lever extends through the channel and is mechanically coupled to a means for adjusting the power to a load.

Abstract: A seesaw manipulation-type variable resistor is provided which has a linear sliding-type variable resistor unit. A U-shaped groove in a below-extended arm of a manipulation key smoothly interlink with a coupling member of a linear sliding-type variable resistor. A position restoring leaf spring is provided touching protrusions under both ends of the manipulation key, to give the manipulation key a force for restoration to its neutral position.

Abstract: A variable resistor device including a casing and a shaft slidably connected to the casing along its axis. The casing houses a resistive substrate and a slider which is movable along a surface of the resistive substrate. The casing also defines a pair of guide grooves for receiving protrusions extending from the slider, thereby restraining the slider to slide along a path defined by the guide grooves. One side of the slider contacts an end of the shaft, and an opposite side of the slider is pressed by a spring. The spring force is parallel to but spaced away from the axis of the shaft; therefore, the forces acting on the slider create a torque. Because the slider is not connected to the shaft, the slider pivots within a small clearance provided by the guide groove in response to the torque, thereby causing the projections of the slider to press against the walls of the guide groove and thereby preventing vibration of the slider relative to the casing.

Abstract: A position sensor assembly for sensing the rotary position of a rockshaft of a hitch mechanism includes a rotary potentiometer coupled to the rockshaft. The rockshaft is enclosed in a rockshaft housing and a sensor housing is attached to the rockshaft housing. The potentiometer is attached to an outside surface of the sensor housing and has a sensor shaft which extends through a portion of the sensor housing. The position sensor has a first set of gear teeth on the rockshaft meshing with a second set of gear teeth on the sensor shaft. The sensor housing at least partially encloses the second set of gear teeth. The first and second sets of gear teeth are preferably configured as gear segments. The sensor shaft is supported for rotation by the sensor housing. The potentiometer is preferably a spring-pre-loaded potentiometer. A second spring is mounted on the second set of gear teeth and is engagable with a wall of the sensor housing to define an assembly position.

Abstract: A variable resistor includes a first resistor having linear resistance or attenuation characteristic, a second resistor disposed along the first resistor and having the linear resistance or attenuation characteristic, and a slider for bridging the first and second resistors, wherein one end of each of the first and second resistors is connected with each other.