Mechanically Variable (e.g., Rheostat) Patents (Class 338/68)
  • Publication number: 20150061819
    Abstract: A chip resistor includes a base member, a resistive element formed on the base member, a first inner electrode held in contact with a first end portion or the resistive element, a second inner electrode held in contact with a second end portion of the resistive element, a first reverse surface electrode reaching a first end portion of the base member, and a second reverse surface electrode reaching a second end portion of the base member. The length of the first and the second reverse surface electrodes is in a range of 2/10 to 3/10 of the length of the base member. Also, the length of the first and the second reverse surface electrodes is greater than the length of the first and the second inner electrodes.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 5, 2015
    Inventors: Shinsuke OGAWA, Makoto TOYONAGA
  • Patent number: 8808886
    Abstract: A battery management system is disclosed. The system includes a variable discharge resistor and a temperature measuring unit to measure the temperature of the discharge resistor. The resistance of the discharge resistor is modified based at least in part on the measured temperature.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: August 19, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Meen-Suk Kim
  • Patent number: 8576044
    Abstract: A controller for a camera crane has a rocker button pivotally supported in or on a controller housing about a first pivot axis. A shaft of an electrical component, such as a variable resistor, is on a second pivot axis spaced apart from the first pivot axis. An arm is attached to the shaft. A spring urges the arm to a center position. Movement of the rocker button moves the arm. Due to the offset of the first and second pivot axes, movement of the rocker button results in proportionally reduced movement of the shaft of the electronic component. Smooth crane arm movements are readily achieved as the controller is less sensitive to the operators hand or finger movements.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: November 5, 2013
    Assignee: Chapman/Leonard Studio Equipment, Inc.
    Inventor: Leonard T. Chapman
  • Patent number: 8456271
    Abstract: An optical proximity switch includes a potentiometer for setting a switching point and supported for rotation through multiple turns, a crosswheel supported for rotation and including a visible position index visible, and a cam drive rotatably coupled to the potentiometer and the crosswheel.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: June 4, 2013
    Assignee: IFM Electronic GmbH
    Inventors: Yevgeniy Vinshtok, Peter Breh
  • Publication number: 20130113599
    Abstract: A controller for a camera crane has a rocker button pivotally supported in or on a controller housing about a first pivot axis. A shaft of an electrical component, such as a variable resistor, is on a second pivot axis spaced apart from the first pivot axis. An arm is attached to the shaft. A spring urges the arm to a center position. Movement of the rocker button moves the arm. Due to the offset of the first and second pivot axes, movement of the rocker button results in proportionally reduced movement of the shaft of the electronic component. Smooth crane arm movements are readily achieved as the controller is less sensitive to the operators hand or finger movements.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 9, 2013
    Applicant: CHAPMAN/LEONARD STUDIO EQUIPMENT, INC.
    Inventor: Leonard T. Chapman
  • Patent number: 8400342
    Abstract: A joystick comprising a housing, a ball supported and held within the housing, and a joystick handle attached to the ball. The joystick also includes a first device held within the housing, and a second device held within the housing. The joystick also includes a first engagement shaft extending from the first device to the ball, the first engagement shaft having an end adjacent the ball and engaging the ball, and a second engagement shaft extending from the second device to the ball, the second engagement shaft having an end adjacent the ball and engaging the ball.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: March 19, 2013
    Assignee: Joy MM Delaware, Inc.
    Inventors: Joseph J. Zimmerman, Garrett L. Lowman
  • Publication number: 20130063319
    Abstract: Apparatus and method that includes providing a variable-parameter electrical component in a high-field environment and based on an electrical signal, automatically moving a movable portion of the electrical component in relation to another portion of the electrical component to vary at least one of its parameters. In some embodiments, the moving uses a mechanical movement device (e.g., a linear positioner, rotary motor, or pump). In some embodiments of the method, the electrical component has a variable inductance, capacitance, and/or resistance. Some embodiments include using a computer that controls the moving of the movable portion of the electrical component in order to vary an electrical parameter of the electrical component. Some embodiments include using a feedback signal to provide feedback control in order to adjust and/or maintain the electrical parameter.
    Type: Application
    Filed: October 30, 2012
    Publication date: March 14, 2013
    Applicants: Regents of the University of Minnesota, Life Services, LLC
    Inventors: Life Services, LLC, Regents of the University of Minnesota
  • Patent number: 8305187
    Abstract: A display device includes a display panel on which a pixel electrode and a common electrode are patterned, and a variable resistor configured to vary a common voltage applied to the common electrode. The variable resistor includes a variable resistance control unit configured to control resistances between resistance terminals that are electrically connected to one another.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: November 6, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventor: Heung-Suk Chin
  • Patent number: 8253007
    Abstract: A potentiometer control for use as a volume or tone control for a musical instrument, such as a guitar, that includes a switch which switches out the resistive element when the control is set to its most clockwise position so as to not load the instrument pickup when desired and so permit maximum volume to be achieved.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: August 28, 2012
    Inventor: Richard Ned Steinberger
  • Publication number: 20120194318
    Abstract: A display device includes a display panel on which a pixel electrode and a common electrode are patterned, and a variable resistor configured to vary a common voltage applied to the common electrode. The variable resistor includes a variable resistance control unit configured to control resistances between resistance terminals that are electrically connected to one another.
    Type: Application
    Filed: September 22, 2011
    Publication date: August 2, 2012
    Inventor: Heung-Suk Chin
  • Patent number: 8115588
    Abstract: A novel game controller is provided. The game controller includes: a lower operation button supported by a rotation shaft so as to be capable of a rotating operation; a resistor arranged on an internal substrate; and a conductive member to be pressed against the resistor by a rotating operation on the lower operation button, the conductive member having elasticity. The resistor outputs an analog signal in accordance with a contact area of the conductive member, thereby realizing an analog input.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: February 14, 2012
    Assignees: ALPS Electric Co., Ltd., Sony Computer Entertainment, Inc.
    Inventors: Tetsu Numata, Koichi Morito
  • Patent number: 8031044
    Abstract: A switch element (1) for actuating a setting parameter on an electronic microdevice, such as a hearing aid, is characterized by a rotary element (7) having peripherally at least three contact points (9), said contact points being connected to one another in electrically conductive fashion. Furthermore, the switch element has an elastically mounted reset element connected with the rotary element as well as at least two electric leader contacts (3, 5), which can be switched into electrically conducting contact by turning the rotary element via the contact points.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: October 4, 2011
    Assignee: Phonak AG
    Inventors: Bruno Gabathuler, Andi Vonlanthen
  • Patent number: 7788799
    Abstract: A variable resistance device comprises a resistive member having a resistive resilient material. A first conductor is configured to be electrically coupled with the resistive member at a first contact location over a first contact area. A second conductor is configured to be electrically coupled with the resistance member at a second contact location over a second contact area. The first contact location and second contact location are spaced from one another by a distance. The resistance between the first conductor at the first contact location and the second conductor at the second contact location is equal to the sum of a straight resistance component and a parallel path resistance component. At least one of the first location, the second location, the first contact area, and the second contact area is changed to produce a change in resistance between the first conductor and the second conductor.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: September 7, 2010
    Assignee: Authentec, Inc.
    Inventors: Allan E. Schrum, Michael D. Rogers
  • Patent number: 7710237
    Abstract: A case includes first and second halves, each having an opening in its one side, combined together with the openings opposed to each other. A moving member is accommodated within the case and slidingly movable along a movement guide. An operator is connected to the moving member. The operator has a proximal end connected to the moving member, a free end projecting outwardly from an upper surface of the case, and a bent portion bent between the both ends. Tops of the first and second halves are displaced from each other, in a direction vertical to the upper surface, to form a gap permitting entry of the operator. Edge regions of the tops of the both halves overlap with each other in the direction vertical to the upper surface, and the bent portion is bent so that the free end projects outwardly through the gap in the overlapping regions.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: May 4, 2010
    Assignee: Yamaha Corporation
    Inventor: Kojiro Kato
  • Patent number: 7619502
    Abstract: A potentiometer network includes a first main terminal, a second main terminal, a plurality of resistive elements connected in parallel between the first main terminal and the second main terminal, and means for embedding calibration of said resistive elements in said potentiometer network.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: November 17, 2009
    Assignee: Honeywell International Inc.
    Inventors: Joy P. Prabhakaran, Jyothi K. N. Setty
  • Publication number: 20080258858
    Abstract: A non-burnable varistor, comprises a base slice having two opposite surfaces, a first elicit pole electrically connected to one surface of the said base slice, a second elicit pole electrically connected to the other surface of the said base slice. Outside each of the said two opposite surfaces of the base slice a low-melting-point metal conductor layer is respectively situated, which is melted at the temperature of 155˜450° C., and the two layers are not electrically connected by any good conductor. When the non-burnable varistor base is struck and burned through to form an arc, the low-melting-point metal are melted and go into the arc in the form of gas or liquid, to depress the resistance of the arc nearly to a short estate. So the arc current can be cut off by the over-loading security mechanism as over-current protective fuses or breakers, before the coat of the non-burnable varistor caught on fire, to prevent the occurrence of fire accident.
    Type: Application
    Filed: September 18, 2007
    Publication date: October 23, 2008
    Inventor: Danfeng Sun
  • Patent number: 7369031
    Abstract: A non-contact type potentiometer with high resolution of rotation amount detection applicable to endlessly multiple rotations. The potentiometer has an endlessly rotatable first shaft, a first detection unit that magnetically detects a rotation angle of the first shaft in a non-contact manner, an endlessly rotatable second shaft, a second detection unit that magnetically detects a rotation angle of the second shaft in a non-contact manner, a transmission unit that decreases the speed of the rotation of the first shaft and transmits the rotation to the second shaft, and an output unit that outputs an electric signal proportional to a rotation amount of the first shaft based on detection signals from the first detection unit and the second detection unit.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: May 6, 2008
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventor: Rajagopal Narayanasamy
  • Patent number: 6888405
    Abstract: A programable gain amplifier (PGA) has an amplifier and a variable resistor that is connected to the output of the amplifier. The variable resistor includes a resistor that is connected to a reference voltage and multiple parallel taps that tap off the resistor. A two-stage switch network having fine stage switches and coarse stage switches connects the resistor taps to an output node of the PGA. The taps and corresponding fine stage switches are arranged into two or more groups, where each group has n-number of fine stage switches and corresponding taps. One terminal of each fine stage switch is connected to the corresponding resistor tap, and the other terminal is connected to an output terminal for the corresponding group. The coarse stage switches select from among the groups of fine stage switches, and connect to the output of the PGA.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: May 3, 2005
    Assignee: Broadcom Corporation
    Inventors: Felix Cheung, Kevin T. Chan, Siavash Fallahi
  • Patent number: 6862799
    Abstract: A method for changing an electrical resistance of a resistor. Initially, the resistor is provided, wherein the resistor has a length L and an electrical resistance R1. A portion of the resistor is exposed to a laser radiation, wherein the portion includes a fraction F of the length L of the resistor. After the resistor has been exposed to the laser radiation, the resistor has an electrical resistance R2, wherein R2 is unequal to R1.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: March 8, 2005
    Assignee: International Business Machines Corporation
    Inventors: Arne W. Ballantine, Cyril Cabral, Jr., Daniel C. Edelstein, Anthony K. Stamper
  • Publication number: 20040041687
    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).
    Type: Application
    Filed: August 27, 2003
    Publication date: March 4, 2004
    Inventor: Reiner Schweinfurth
  • Publication number: 20040027232
    Abstract: A method and structure for changing an electrical resistance of a resistor. Initially, the resistor is provided, wherein the resistor has a length L and an electrical resistance R1. A portion of the resistor is exposed to a laser radiation, wherein the portion includes a fraction F of the length L of the resistor. Both F=1 and F<1 are within the scope of the present invention. After the resistor has been exposed to the laser radiation, the resistor has an electrical resistance R2, wherein R2 is unequal to R1. The change in resistance from R1 to R2 is due to a heating of the resistor by the laser radiation, which causes a chemical or structural change within the resistor. Either R2>R1 or R2<R1 depending on the material composition of the resistor.
    Type: Application
    Filed: August 7, 2003
    Publication date: February 12, 2004
    Inventors: Arne W. Ballantine, Cyril Cabral, Daniel C. Edelstein, Anthony K. Stamper
  • Publication number: 20030090361
    Abstract: A leadframe resistance structure comprises: at least a resistance foil; a plurality of leads, each of the plurality of leads respectively having a first lead surface and an opposite second lead surface, wherein the resistance foil is disposed on the first lead surface of the leads and connected to the leads; and an encapsulating material that encapsulates the resistance foil, and a portion of the first surface of the leads.
    Type: Application
    Filed: August 27, 2002
    Publication date: May 15, 2003
    Inventors: Steven Liu, Horng-Yih Juang, Yih-Wen Shiao, Cheng-Er Fan
  • Publication number: 20030085793
    Abstract: A multidirectional input device includes ring-shaped resistance element layer 18, first conductive layer 22 and second conductive layer 23 shaping in arcs corresponding to resistance element layer 18, and knob 14 having ring-shaped protruded section 14D. Resistance element layer 18 has at least a pair of electrodes and is formed on flexible insulating substrate 16. Protruded section 14D brings resistance element layer 18 into contact with first conductive layer 22 or second conductive layer 23 when the knob is tilted. When a given voltage is applied to the electrodes and the knob is tilted, resistance element layer 18 comes in contact with first conductive layer 22 or second conductive layer 23, so that an output signal of a high resolution concerning a tilt angle can be obtained. The output signal is supplied to a microprocessor and calculated, then an angle or a direction is detected and recognized.
    Type: Application
    Filed: July 19, 2002
    Publication date: May 8, 2003
    Inventors: Hiroto Inoue, Hiroyasu Okada, Tamotsu Yamamoto, Masaki Sawada, Keiji Kaizaki
  • Patent number: 6535104
    Abstract: A multi-axis potentiometer according to this invention is capable of determining actuator movement along multiple axes. The potentiometer includes a hollow, semi-spherical shell lined internally with a resistive element. Electrical contacts are attached across from each other along the resistive element near an opening of the shell to supply a source voltage or current to the resistive element. A pair of sensors are arranged on the end of an armature to contact the resistive element. The sensors in the end of the armature are used to sense voltage or current levels at the points where they contact the resistive element. These voltage or current levels are used to determine spherical coordinates corresponding to the location of the contact point and to determine an angle of rotation of the armature relative to the resistive element. A slidable handle can further be provided to a stem of the armature. The slidable handle contains a sensor to contact a resistive element located on the stem of the armature.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: March 18, 2003
    Assignee: Intel Corporation
    Inventor: David Koizumi
  • Publication number: 20030000941
    Abstract: A method of heating air, fluid or materials in dry or humid conditions, fed by low voltage alternate or continuous electrical current or TBTS.
    Type: Application
    Filed: June 17, 2002
    Publication date: January 2, 2003
    Inventor: Jean-Claude Couraud
  • Publication number: 20020021203
    Abstract: Chip PTC thermistors that can easily be inspected the soldered portions after it is mounted on a printed circuit board and that can be used in a flow soldering process, and methods of making same. A chip PTC thermistor of the present invention includes: a first main electrode and a first sub-electrode on first surface of a cuboidal form conductive polymer having the PTC characteristics, a second main electrode and a second sub-electrode on a second surface opposite the first surface of the conductive polymer. Between the first sub-electrode and the second sub-electrode, and between the first sub-electrode and the second main electrode are electrically connecting with a first side electrode and a second side electrode, respectively.
    Type: Application
    Filed: February 16, 2000
    Publication date: February 21, 2002
    Inventors: JUNJI KOJIMA, KOHICHI MORIMOTO, TAKASHI IKEDA, TOSHIYUKI IWAO
  • Patent number: 6237411
    Abstract: A limit-level sensor for measuring level of a liquid has a resistance element which has an electric resistance which suddenly varies a transition temperature which lies above the maximum liquid temperature. The resistance element is first heated by electric current. Thereupon, the electric resistance of the resistance element is measured. When the resistance element is covered with liquid, the heat generated by the electric current is led away so that the temperature of the resistance element is less than its transition temperature. If the resistance element is not covered by liquid, this heat is scarcely led away, so that the temperature of the resistance element remains above the transition temperature.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: May 29, 2001
    Assignee: Mannesmann VDO AG
    Inventors: Ralf Schimmel, Stefan Lipfert, Joachim Acht, Werner Wallrafen
  • Patent number: 6236034
    Abstract: A pointing device comprises a substrate having a fixed pivoting hole area defined by a hole through a conductive surface that is coated with electrically conductive material and comprises four segments of patterned resistive materials. Each segment includes a plurality of spaced thick film pieces that may include radially extending strips, substantially Rectangular blocks, or substantially circular pieces. An electrically conductive force disc is supported by is a movable conductive spring or sheath to pivot relative to the pivoting hole area and rotate over the resistive surface of the substrate. The deflection of the conductive spring allows the force disc to contact portions of the conductors of the substrate, and the spring or sheath to contact portions of the conductors inside the pivoting hole area, generating electrical outputs to a microcontroller.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: May 22, 2001
    Assignee: VaraTouch Technology Incorporated
    Inventor: Dean R. DeVolpi
  • Patent number: 5986537
    Abstract: A high-voltage variable resistor includes an insulating substrate having a surface on which there is formed a resistor including a variable resistor portion and a plurality of terminal electrodes including an output terminal electrode. A rotation shaft is included which is equipped with a sliding member adapted to slide on the variable resistor portion of the resistor when the rotation shaft is rotated. An insulating case rotationally supports the rotation shaft. The insulating substrate is disposed in the case such that the aforementioned surface is opposed to an inner bottom portion of the case. A capacitor connecting terminal is inserted through the insulating substrate and is electrically connected to the output terminal electrode.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: November 16, 1999
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Shinji Kato
  • Patent number: 5949325
    Abstract: A curved disc joystick or pad with improved performance, reliability and durability can be used as a cursor pointing device for computers, remote controls, video games, consumer electronics, industrial controllers, automotive and other applications. A conductive spring or sheath connects to a conductive curved rubber transducer which can be deflected to make contact with conductors on a printed circuit board, providing electrical outputs to a microprocessor or other device. A ribbed locking extension may be added to automate the assembly process. In addition, a collar may be provided to produce a controllable product, both in terms of manufacturing and performance.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: September 7, 1999
    Assignee: Varatouch Technology Inc.
    Inventor: Dean Devolpi
  • Patent number: 5755138
    Abstract: An electrical lever assembly includes a lever rockably supported on a main body, a rod vertically sliding with a disc provided on the lever, a potentiometer having a horizontally rotating shaft mounted on the lower surface of the main body, and an arm connecting the potentiometer and the rod. The potentiometer is mounted on the lower surface of the main body in a condition adjustable with respect to a position in a vertical direction and a horizontal direction.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: May 26, 1998
    Assignee: Komatsu Ltd.
    Inventors: Masayoshi Mototani, Seita Hayashi
  • Patent number: 5675309
    Abstract: A low-cost joy stick or pad with improved performance, reliability and durability which can be used as a cursor pointing device for computers, remote controls, video games, consumer electronics, industrial controllers, automotive and other applications. A conductive spring or sheath connects to a conductive curved rubber transducer which can be deflected to make contact with conductors on a printed circuit board, providing electrical outputs to a microprocessor or other device.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: October 7, 1997
    Inventor: Dean DeVolpi
  • Patent number: 5657552
    Abstract: A map or globe is provided with a transparent thin covering capable of conducting electricity. The transparent thin covering envelopes the globe or overlies the map. An electrical resistance measuring means would be employed to determine a measure of electrical resistance between any two points on the map or globe. The electrical resistance measuring means would include a first probe and a second probe. The first probe would be placed on a first location on the map or globe and the second probe would be placed on a second location on the map or globe. A measure of electrical resistance will be generated by the electrical resistance measuring means reflecting the resistance of the conductive thin covering between the first location and the second location. This electrical resistance is proportionally related to the distance separating the two points on the map or globe.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: August 19, 1997
    Inventors: Rollin Reineck, Jerome M. Comcowich
  • Patent number: 5301568
    Abstract: A stick lever device including a mechanism for shifting a neutral position and capable of decreasing the number of parts of the device and facilitating the assembling. A pivotal shaft of a variable resistor mounted on a mounting member is securely mounted with a pivotal operation section including a stick lever. The mounting member is formed with two shaft holes and a support shaft of an arm member is selectively fitted in any one of the shaft holes. The pivotal operation section is provided thereon with three projections. The arm member which is urged by a spring is abutted against predetermined two of the projections depending on the position of the support shaft of the arm member, so that the neutral position of the pivotal operation section and stick lever may be shifted as desired.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: April 12, 1994
    Assignee: Futaba Denshi Kogyo K.K.
    Inventor: Toru Kono
  • Patent number: 5300759
    Abstract: A control system, a control device therefor and methods of making the same are provided, the control system comprising a source of energy, an output producing unit that uses the energy to produce the output thereof, a control device having control structure for interconnecting the source of energy to the unit, the control device having a rotatable shaft that sets the control structure in different positions thereof in relation to the rotational set position of the shaft from an "off" position thereof, the control structure having the amount of the energy passing therethrough from the source to the unit being different for each set position thereof, indicating structure operatively associated with the shaft for visually indicating the set position of the shaft and, thus, the amount of energy being fed by the control structure to the unit, and sensing structure operatively associated with the shaft that senses the set position of the shaft and electronically displays that sensed position of the shaft whereby th
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: April 5, 1994
    Assignee: Robertshaw Controls Company
    Inventor: David M. Dodson
  • Patent number: 5035836
    Abstract: A solid lubricated resistive ink includes solid lubricants which provide self-lubrication of the resistive ink under high vacuum and low moisture conditions. The resistive inks include a polymer-based binder and an electrically conductive solid lubricant which remains electrically conductive and lubricative under low moisture and high vacuum. Effective lubricants include MoSe.sub.2, NbSe.sub.2 graphite intercalated with bromine and graphite intercalated with a metal chloride. The resistive ink may additionally include carbon.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: July 30, 1991
    Assignee: Hughes Aircraft Company
    Inventors: Michael N. Gardos, Larry C. Lipp, William S. Griffin
  • Patent number: 4850222
    Abstract: A sensor unit is disclosed which is adapted to be used as a detector for a fuel gauge, an oil pressure gauge or the like for a vehicle. A variable resistor serving as a signal converting device is securely fitted at both ends thereof in board fixing grooves formed at a frame fixed on a fixing bracket, so that fixing of the variable resistor may be accomplished without using adhesives. Fixing and electrical connection of a connection conductor are attained by merely fitting the connection conductor in an extension restraining groove without soldering.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: July 25, 1989
    Assignee: Hokuriki Electric Industry, Co., Ltd.
    Inventors: Yoshimitsu Motoki, Kiyohito Nakagawa, Morio Tada
  • Patent number: 4700170
    Abstract: A wound wire rheostat for a fuel level sender or other condition sensor and its method of manufacture, that eliminate wire snapping by heat staking selected portions of the wire into its plastic support board.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: October 13, 1987
    Assignee: Stewart-Warner Corporation
    Inventor: Frank C. Weaver
  • Patent number: 4642602
    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.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: February 10, 1987
    Assignee: Robert Bosch GmbH
    Inventors: Wolfgang Maisch, Jurgen Treiber
  • Patent number: 4057904
    Abstract: Apparatus for use in the measurement of changes in the spacing between objects includes a rotatable wire storage reel coupled, by means of replaceable gears, to the drive shaft of a potentiometer. The apparatus is mounted on a first object and a wire on the storage reel is extended and attached to a second object spaced a variable distance from the first object. Constant tension is applied to the wire storage reel by means of a spring extending between a spring supply reel and a spring take-up reel coupled to the wire storage reel.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: November 15, 1977
    Assignee: The United States of America as represented by the Secretary of the Department of Transportation
    Inventors: Joseph D. Vrabel, Dennis W. Gosselin
  • Patent number: 4001759
    Abstract: A variable electric resistor device comprises a block of electrical insulating material. An elongated member of current resistive metal is removably positioned in the insulating material. A pair of electrically conductive terminal leads are each electrically connected to a corresponding end of the current resistive member. An elongated ancillary member of electrically conductive material is embedded in the insulating material in spaced parallel relation with the current resistive member. A plurality of spaced transverse internally threaded bores are formed through the ancillary member. A plurality of spaced bores are formed through the block extending from both sides of the internally threaded bores from the current resistive member to a surface of the block.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: January 4, 1977
    Assignee: The Raymond Lee Organization, Inc.
    Inventor: David E. Bailey
  • Patent number: 3988710
    Abstract: A contactless potentiometer which has a linear output characteristic is constructed with a pair of elongated, hollow cylindrical tubes which are made of magnetically saturable material and are aligned so that their axes form an angle less than 180.degree., with both of said tubes having at least one conductive wire coupled therewith which is interconnected with the wire that is coupled with the other tube, and a moveable magnet which is formed as a segment of a circle with a pair of straight sides that move adjacent to said tubes so that the total volume of said tubes that is magnetically saturated remains substantially constant while the inductance ratio of the tubes varies.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: October 26, 1976
    Assignee: Illinois Tool Works Inc.
    Inventors: Edward Frank Sidor, Frank B. Desio