With Electrically Controlled Indicator Patents (Class 73/313)
  • Patent number: 10809112
    Abstract: Method for calculating a linearization curve for determining the fill level in a container from a filling height, said method comprising the following steps: acquiring three-dimensional data of the container with a mobile end device, having at least one optical camera, a depth sensor and a motion detector, establishing a three-dimensional model of the container, and calculating the linearization curve from the three-dimensional model for determining a fill level from a measured filling height.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: October 20, 2020
    Assignee: VEGA GRIESHABER KG
    Inventor: Marcel Dieterle
  • Patent number: 10794333
    Abstract: A testing device for general aviation carburetors and fuel servos. The testing device is capable of replicating carburetor operating characteristics and using sensors to monitor and record the operating characteristics of both horizontal and vertical type carburetors, and compare the data received with predefined values. The testing device measures both test fluid and air flow through a carburetor. A moveable camera is placed within the throttle body of the carburetor being tested providing visual inspection of the fluid atomization with snap shot capability. The testing device also includes flow sensors to record the performance of the carburetor, providing automated data collection with memory storage. The device is fully portable with lockable caster wheels.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: October 6, 2020
    Assignee: Weaver Intellectual Property, LLC
    Inventors: Ronald J. Weaver, Dale Ballenger, Chad Szwarnowicz
  • Patent number: 10712194
    Abstract: A fluid sensor system capable of sensing a fluid level or a volume of fluid held by a reservoir, such as a container or a tank. In one embodiment, the system may include a magnetic element in a flotation device that suspends the magnetic element in the fluid held by the reservoir, so that the magnetic element randomly floats in proximity to a top of the fluid surface. Two or more magnetic field sensors or magnetometers are associated with the reservoir in at least two different locations, spaced apart from one another. The system further includes a processor coupled to the sensors. The magnetic field sensors may sense the strength of the magnetic field around the magnetic element to generate signals that are sent to the processor. The processor may then determine the location of the magnetic element within the reservoir based on the signals. The determined location can be correlated to a volume of fluid within the tank which is output to another device and/or a user.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: July 14, 2020
    Assignee: Medallion Instrumentation Systems, LLC
    Inventors: Martin Payne, Philip J. VanderWall
  • Patent number: 10648848
    Abstract: A mounting structure includes a mounting object member and a liquid level detecting device. The liquid level detecting device includes a device main body which is mounted on a mounting surface of the mounting object member and a holder which is attached to the device main body and is rotated according to a variation of a liquid level of liquid stored in a tank. The mounting object member has a pair of lock portions which lock side portions of the device main body respectively and a pair of projections. The device main body has a pair of hooks. The hooks have respective claws. The hooks are formed closer to the mounting surface in a thickness direction of the device main body than a holder movable area of the device main body.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: May 12, 2020
    Assignee: YAZAKI CORPORATION
    Inventors: Ryo Hirose, Shintaro Nakajima, Shinpei Kato, Shingo Nomoto
  • Patent number: 10605644
    Abstract: Provided is a complementary apparatus for measuring a level of urea water includes an ultrasonic measurement unit installed inside a urea water tank to measure a level of urea water using an ultrasonic wave, an inductance measurement unit including a winding coil wound in a vertical direction inside the urea water tank and having a winding density varied toward one side, and measuring a level of urea water using inductance measured as a current is applied to the winding coil, a temperature measurement unit installed in the urea water tank and measuring a temperature, and a controller determining whether to operate the ultrasonic measurement unit or the inductance measurement unit according to the temperature measured by the temperature measurement unit or selectively outputting a level of urea water measured by the ultrasonic measurement unit and the inductance measurement unit.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: March 31, 2020
    Assignee: COAVIS
    Inventors: Dong Heon Mo, Jin Hwa Jung, In Seok Sohn, Hyun Tae Lee
  • Patent number: 10591340
    Abstract: Method for calculating a linearization curve for determining the fill level in a container from a filling height, said method comprising the following steps: acquiring three-dimensional data of the container with a mobile end device, having at least one optical camera, a depth sensor and a motion detector, establishing a three-dimensional model of the container, and calculating the linearization curve from the three-dimensional model for determining a fill level from a measured filling height.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: March 17, 2020
    Assignee: VEGA GRIESHABER KG
    Inventor: Marcel Dieterle
  • Patent number: 10458832
    Abstract: A method for the functional diagnosis of an electromechanical fill state measuring device in which a displacement element on a measuring wire is lowered into a filling material in a container such that in an equilibrium state, the weight of the displacement element minus a displacement element buoyancy, which depends upon at least one equilibrium volume, is determined to be equal to a resulting weight of the displacement element. The resulting weight is specified, and the specified resulting weight is kept constant by correspondingly changing the length of the measuring wire in the equilibrium state. The fill state of the filling material is ascertained using the length of the lowered measuring wire. In order to diagnose a function, the specified value of the equilibrium volume of the displacement element is changed, and the resulting change in the length of the measuring wire is ascertained on the basis of the constant equilibrium state of the resulting weight.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: October 29, 2019
    Assignee: ENDRESS+HAUSER SE+CO.KG
    Inventors: Yoichi Kamei, Andreas Kaiser, Dietmar Spanke
  • Patent number: 10408666
    Abstract: A fluid sensor system capable of sensing a fluid level or a volume of fluid held by a reservoir, such as a container or a tank. In one embodiment, the system may include a magnetic element in a flotation device that suspends the magnetic element in the fluid held by the reservoir, so that the magnetic element randomly floats in proximity to a top of the fluid surface. Two or more magnetic field sensors or magnetometers are associated with the reservoir in at least two different locations, spaced apart from one another. The system further includes a processor coupled to the sensors. The magnetic field sensors may sense the strength of the magnetic field around the magnetic element to generate signals that are sent to the processor. The processor may then determine the location of the magnetic element within the reservoir based on the signals. The determined location can be correlated to a volume of fluid within the tank which is output to another device and/or a user.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: September 10, 2019
    Assignee: Medallion Instrumentation Systems, LLC
    Inventors: Martin Payne, Philip J. VanderWall
  • Patent number: 10240964
    Abstract: Method and apparatus are disclosed for fuel fill volume estimation for a vehicle. An example vehicle includes a fuel tank float, a dashboard display, and an engine control module. The engine control module divides a fuel tank into zones. When the vehicle is not in motion and a position of the fuel tank float changes by a threshold amount, engine control module measures an initial fuel level. When the position of the fuel tank float does not change for a threshold period of time, the engine control module measures a final fuel level. Additionally, the engine control module calculates an amount of fuel added to the fuel tank based on the zones associated with the initial fuel level and a final fuel level and display the amount on the dashboard display.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: March 26, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Marla Johnston, Paul A. Mueller, Zdravko Nikolik, David Divis, Boris Gorovets, John Dolinsky, Jr.
  • Patent number: 10197432
    Abstract: Provided is a liquid level sensor for a fuel tank including: a case having a filled liquid filled therein and closed; a resistor substrate provided in the case and a wiper contacting the resistor substrate; and a damper provided in the case and absorbing a pressure change of an inner portion of the case. The liquid level sensor for a fuel tank is configured to absorb a pressure change of the inner portion of the case, thereby making it possible to prevent leakage of the filled liquid that may occur due to the pressure change of the inner portion of the case.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: February 5, 2019
    Assignee: COAVIS
    Inventors: Dong Heon Mo, Hae Seong Kim
  • Patent number: 10124850
    Abstract: A fuel pump of a straddle type vehicle is provided to be arranged suitably within a fuel tank. The fuel tank of the straddle type vehicle includes a vertically split upper tank and lower tank that have flanges joined by welding. The flanges are arranged to extend along an upper part of left and right main frames, which are inclined so as to extend in a forward and rearward direction. A fuel pump is arranged in an interior of the fuel tank through an opening provided in the lower tank. A pump flange section is provided in the fuel pump so as to close the opening. The lower tank is provided with a substantially horizontal flat portion. The flat portion has the opening, which is located on the lower side in an inclined direction of the main frames.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: November 13, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yusuke Inoue, Kohei Hirano
  • Patent number: 10094369
    Abstract: A process to pump liquid held in a passive tank to an active tank when the active tank has a liquid level below a set point level and when the passive tank contains liquid at a temperature above the freezing point of the liquid, the active tank including a discontinuous level gauge configured to provide at least x+1 indications of the level of liquid in tank as a function of the relative position of a moving part with respect to x set point levels, x being at least equal to 2. The process includes: reading the level indication from a level gauge; starting a pump and measuring a time during which a pump transfers liquid; stopping the pump if this time is greater than a time constant, which depends on the value of the level indication, and if a next set point level is not reached.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: October 9, 2018
    Assignee: Plastic Omnium Advanced Innovation and Research
    Inventors: Paul Elong, Mircea Mateica
  • Patent number: 9983025
    Abstract: A motion sensor constituted of: a housing; a rotating member secured to the housing and arranged to rotate about a rotation axis of the rotating member responsive to motion of the housing across a surface; at least one bipolar magnet secured to the rotating member so as to rotate about the rotation axis of the rotating member with the rotation of the rotating member; and a transducer secured to the housing and juxtaposed with the rotating member, the transducer arranged to vary its output voltage in response to changes in magnetic field caused by the rotation of the at least one bipolar magnet.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: May 29, 2018
    Assignee: ICTV Brands, Inc.
    Inventors: Idan Zuta, Dolev Rafaeli, Philip Solomon
  • Patent number: 9964427
    Abstract: A liquid level sensor system is disclosed for remotely monitoring the liquid level in a tank. The system comprises a first fixed portion with a first liquid level response unit, and a second fixed portion with a second liquid level response unit. A guide tube is inserted into the tank and attached to the bottom of the first fixed portion. The guide tube is provided with a multitude of ports, such that the liquid level in the guide tube is flush with the liquid level in the tank. The first liquid level response unit comprises a float floating up and down with the variation of the liquid level in the guide tube, a rotating shaft rotating around a relatively fixed axis of rotation in the up and down floating process of the float, and a permanent magnet. The second fixed portion is attached to the top of the first fixed portion. The second liquid level response unit comprises a PCB, a magnetoresistive angle sensor chip, and a control circuit electrically connected to the magnetoresistive angle sensor chip.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: May 8, 2018
    Assignee: MultiDimension Technology Co., Ltd.
    Inventors: James Geza Deak, Mark C. Tondra
  • Patent number: 9945713
    Abstract: A liquid level detector may include a float, an arm member, and a magnetic sensor unit. The float may be attached to the arm member. The arm member may be configured to convert a movement of the float in a vertical direction to a rotational movement. The magnetic sensor unit may include a magnetic sensor and covers. The covers may cover the magnetic sensor. The covers may include a first cover, and a second cover. The first cover may be made of a first resin material. The first cover may cover a whole surface of the magnetic sensor. The second cover may be made of a second resin material different from the first resin material. The second cover may cover a whole surface of the first cover.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: April 17, 2018
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventor: Takahiro Nakamura
  • Patent number: 9746452
    Abstract: System including a sensor configured to be disposed within a reservoir of a machine having moving parts that are lubricated by a liquid in the reservoir. The sensor is configured to obtain a measurement of the liquid that is representative of at least one of a quantity or quality of the liquid in the reservoir. The system also includes a device body operably coupled to the sensor. The device body has a processing unit that is operably coupled to the sensor and configured to generate first data signals representative of the measurement of the liquid. The device body also includes a transmitter that is configured to wirelessly communicate the first data signals to a remote reader.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: August 29, 2017
    Assignee: General Electric Company
    Inventors: Bret Dwayne Worden, Mahalakshmi Shunmugham Balasubramaniam, Ajith Kuttannair Kumar, Jingjun Zhang, Jennifer Lynn Coyne, Sachidananda Chinagudi Jagadeesha
  • Patent number: 9453756
    Abstract: Provided is a thin liquid surface detecting apparatus wherein a thickness of a holder is suppressed. A liquid surface detecting apparatus is provided with: a holder rotatably held to a main body section; a magnet fixed to the holder; an arm, which connects the holder and a float floating on the liquid surface of a liquid, and which converts an up-and-down motion of the float into a rotation motion of the holder; and a magnetic detecting element, which is positioned at a rotation center portion of the holder, and is fixed to the main body section such that the magnetic detecting element intersects a magnetic flux of the magnet, and which detects a magnetic change generated with displacement of the magnet and converts the change into electrical signals. The liquid surface detecting apparatus detects the liquid surface on the basis of the electrical signals transmitted from the magnetic detecting element.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: September 27, 2016
    Assignee: NIPPON SEIKI CO., LTD.
    Inventor: Yukio Ogasawara
  • Patent number: 9318286
    Abstract: A point level float switch is provided. The point level float switch includes a switch, a removable shaft, and a float. The removable shaft includes a first magnet aligned with the switch. The float is arranged to enclose at least a portion of the removable shaft. The float includes a second magnet of a polarity opposite to the first magnet and arranged parallel to the first magnet in the removable shaft.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: April 19, 2016
    Assignee: Caterpillar Inc.
    Inventors: Ganeshram Muthusamy Devarajan, Amiyo K. Basu
  • Patent number: 9217403
    Abstract: A mount for a level sensor assembly in a fuel tank may include an interconnect member adapted to couple a first tube to a second tube to permit fuel flow through the first tube, the interconnect member and the second tube. The first tube is adapted to be in fluid communication with a fuel pump and the second tube is in fluid communication with fuel in the fuel tank. A bracket is coupled to the interconnect member and adapted to carry at least a portion of the level sensor assembly. In this way, the level sensor assembly may be coupled to fluid tubes associated with the fuel pump, or other tubes, as desired.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: December 22, 2015
    Assignee: Walbro Engine Management, L.L.C.
    Inventors: Kenneth J. Cotton, Kevin L. Israelson, Douglas W. Salowitz, Jr., Roger N. Smith, David L. Speirs
  • Patent number: 9127940
    Abstract: A depth guide system gives an operator of a watercraft carrier an alert that the carrier is at a proper water depth to launch or stow the watercraft. The system includes an activator device or sensor having a housing vertically adjustable along a length of a vertical member. The device activates and deactivates the alert based on water level within the housing. When water is absent from the housing, the device activates a first LED at the top of the vertical member. When water located within the housing is sufficient to electrically connect two contacts, the device deactivates the first LED and activates a second LED of a different color at the top of the vertical member and can also activate an audible alert. A proximity sensor can be included which warns of any obstructions around the perimeter of the watercraft carrier via a secondary audible alarm.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: September 8, 2015
    Assignee: Lake Red Rock LLC
    Inventor: David B. Nirenberg
  • Patent number: 9123230
    Abstract: This system will alert an occupant of a backup in the sewer or septic system and could be used in a residential or commercial structure. The system is affixed to a sewer waste line and includes a float device and a wireless alert device. When a backup occurs, the float will lift and break the magnetic connection between a magnet connected to the float and a sensor on the wireless alert device. This, in turn, will cause a chime or other alarm device to activate inside the structure, alerting the occupant of a backup. The alarm will enable the occupant to turn off or not use any items which use running water until the problem is resolved.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: September 1, 2015
    Inventor: Frank T. Rogers
  • Publication number: 20150107355
    Abstract: Provided is a liquid surface detection device providing for compactness and enabling a reduction in displacement of a rotating shaft of a magnet.
    Type: Application
    Filed: April 5, 2013
    Publication date: April 23, 2015
    Applicant: NIPPON SEIKI CO., LTD.
    Inventors: Hiroyuki Iryo, Yoshiyuki Shimazaki, Yukio Ogasawara
  • Publication number: 20150096367
    Abstract: Systems and methods for measuring or determining the level or amount of multiple immiscible liquids of different densities in containers utilize multiple floats, with each float having a density less than the density of the liquid to be measured but greater than the density of the next less dense liquid (or fluid) in the container. In this fashion, the position of each float can be determined and used to determine the levels of the various liquids using a single three-terminal potentiometer. A method includes measuring first and second electrical signals corresponding to first and second locations of actuation of the potentiometer. A system includes a three terminal potentiometer capable of magnetic actuation at two locations, a first float configured to magnetically actuate the potentiometer at a first location, and a second float configured to magnetically actuate the potentiometer at a second location that differs from the first location.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Applicant: Spectra Symbol Corporation
    Inventors: Daniel Foote Marriott, William Arthur Weatherholtz, II
  • Publication number: 20150090349
    Abstract: A condensate overflow detection device includes a frame, a housing, an affixing device, a surface placement mechanism, a float and an actuator. The housing has a bottom and a plurality of pan engagement side surfaces extending upwardly from the bottom, each of which is disposed at a different angle relative to the bottom surface. The housing defines a vent structure passing therethrough that allows water to pass into the housing. The affixing device clamps a pan engagement side surface to a sidewall of a secondary condensate pan. The surface placement mechanism places one of the pan engagement side surfaces opposite from the affixing device. The float, disposed within the housing, has a first position when no water has entered the housing and a second position when a predetermined level of water has entered the housing. The actuator causes an event when the float is in the second position.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 2, 2015
    Applicant: DIVERSITECH CORPORATION
    Inventors: Jonathan M. Sada, Keith H. Platt
  • Patent number: 8978464
    Abstract: An alternate construction and method for a magnetostrictive probe intended to be used as a tank monitoring device. Height determination, either water or fuel, is referenced to an ultrasonic pickup assembly located inside the shaft at the foot of the probe. With this inverse approach, height measurement uses the relative geothermal stability of underground storage tanks, or the temperature stability offered by the thermal mass of the fuel, to facilitate a tank level determination. At that new location, the detection circuit is isolated from the effect of magnetic risers, large temperature swings and other undesirable phenomenon that often affect magnetostrictive probe measurements that are referenced to the canister. Aside from its primary use as referred to by this disclosure, this probe could be adapted for any application necessitating precise knowledge of height or distance measurement in relation to the foot of the probe without using a reference magnet.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: March 17, 2015
    Inventor: Ambroise Prinstil
  • Publication number: 20150068301
    Abstract: A liquid level transducer for a tank, such as a railroad tank car or the like, includes a mounting head connected to the tank and a sensor assembly extending into the tank from the mounting head. The sensor assembly includes a sensor tube located in the tank and a gauging rod assembly positioned in the sensor tube. The gauging rod assembly can be pulled out of the tank until it magnetically couples with a magnetic float that surrounds the sensor tube. The float moves in response to a change in liquid level and the magnetic coupling provides the user with a visual indication of the liquid level. A sensor board extends along a length of the gauging rod assembly and is responsive to movement of the float for electronically determining the liquid level without the need to magnetically couple the gauging rod assembly to the float.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 12, 2015
    Inventors: Herbert G. Ross, JR., Gagik Farmanyan, Carl Alan Taylor
  • Publication number: 20150059470
    Abstract: A measuring device may be provided with a cover configured to close an opening provided on a fuel tank; a plug configured to close a through hole provided on the cover; and a sensor configured to measure a property of fuel inside the fuel tank. The plug may be provided with an electrical connector and a fuel passage. The electrical connector may be configured to electrically connect inside and outside of the fuel tank. The electrical connector may pierce through the plug from an upper surface to a lower surface of the plug The fuel passage may include an inlet configured to open to the inside of the fuel tank to receive the fuel from the inside of the fuel tank. The sensor may be disposed in the fuel passage of the plug.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 5, 2015
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masaki Ikeya, Nobuhiro Kato, Chiaki Kataoka
  • Patent number: 8967191
    Abstract: A leak detection system for the rapid and accurate detection of the mean surface level change of a body of liquid is provided. The system is capable of sensing mean surface level changes under static or turbulent surface conditions. In one embodiment, the system includes a rigid walled sensor pod with at least one inner pod cavity that is so positioned to receive liquid from a body of liquid such that dynamic equilibrium is possible and maintained between the mean surface level of the body of liquid and the amount of liquid in the inner cavity. The system further includes a sensor assembly having a stiction free float operating in conjunction with a strain gauge, and microprocessors applying algorithms to process, display, and report the sensor data in accordance with the needs of the end user or to initiate actions for automated control functions.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: March 3, 2015
    Inventors: Richard DeVerse, Van R. Malan
  • Publication number: 20150040661
    Abstract: An extensometer probe comprising a linear variable differential transformer (LVDT) and a novel coaxial clamp and extension tube; useful for reducing thermal error, precisely measuring displacement, and deployment in tight spaces like wells or boreholes. A novel float for measuring free surface elevation of liquid; comprising an autonomous vibrator for reducing effects of bubbles, surface tension, and friction. An embodiment of the probe for measuring convergence or dilation in tunnels, bridges, buildings, etc. Embodiments of the probe and float for measuring water level: a total probe for measuring from a single point directly beneath the float, and an evaporation probe for measuring within a hydraulically isolated evaporation pan. A novel mobile monitoring platform deploys the probes within an impoundment, lagoon, pond or other environmental containment structure.
    Type: Application
    Filed: August 11, 2013
    Publication date: February 12, 2015
    Inventor: Michael A. Olson
  • Publication number: 20140373623
    Abstract: A filling level sensor in a fuel tank of a motor vehicle includes a substrate having a resistance network arranged thereon, one or more electrical contacts, which are in contact with the resistance network in order to produce an electrical signal depending on the pivoting of a lever arm, and a float, which is fastened to the lever arm in such a way that the lever arm can be moved by the float in accordance with the filling level. The filling level sensor is connected to electronics, and the electronics are designed in such a way that the electronics provide a respective corresponding electrical target signal for each of the electrical signals generated by the filling level sensor.
    Type: Application
    Filed: December 13, 2012
    Publication date: December 25, 2014
    Inventor: Thomas Klein
  • Patent number: 8915134
    Abstract: A measuring system is disclosed that may include a sensing module that provides a response to a measured quantity, a first mechanical transducer that provides an output signal proportional to the measured quantity, a conversion device that converts the output signal to a second output signal, and a sensor that detects the second output signal and generates an instrument reading within an instrument range of output signals. A bias assembly may forces a second mechanical transducer to provide the second output signal that is detected by the sensor and which generates an instrument reading outside of the specified instrument range when the mechanical transducer is disconnected from the conversion device. A level detector is also disclosed that may include a displacer assembly, a torque rod coupled to the displacer assembly and connected to a magnet, and a non-contact sensor that detects displacement of the magnet assembly within an instrument range.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: December 23, 2014
    Assignee: Dresser, Inc.
    Inventors: Daniel Patrick Giovanoni, Conor Padraic Beote, Jean-Marc Mahieu, Denis Vital
  • Publication number: 20140331765
    Abstract: A filling level indicator includes a retainer, a bow rotatably supported on the retainer and having a lever arm fastened thereto, a float fastened to the lever arm, and a filling level sensor arranged in the retainer. The filling level sensor has a substrate, a resistance network arranged thereon, a contact spring structure, and a cover, connected to the substrate, that covers the resistance network and the contact spring structure. A magnet is connected to the bow or the lever arm and acts on the contact spring structure such that an electrical signal corresponding to the filling level is generated according to the pivoting range. The mount has a wall thickness that can be penetrated by the magnetic field of the magnet, and so metal particles are held on the outside of the mount by the magnetic field of the magnet.
    Type: Application
    Filed: December 18, 2012
    Publication date: November 13, 2014
    Inventors: Hans-Guenter Benner, Bernd Pauer
  • Publication number: 20140331764
    Abstract: A measuring system places a plurality of sensor arrays in a lateral enclosure, the sensors being able to measure movement of magnetic floats from which a liquid level can be calculated. The plurality of sensor arrays is serially positioned in the lateral enclosure in order to enable monitoring of the entire lateral enclosure. The plurality of sensor arrays uses a circuit board with a plurality of a Hall-Effect sensors and a microcontroller to detect the magnetic floats. The circuit boards are also provided with male and female interconnectors to allow an arbitrary sensor array to be connected to an adjacent sensor array; through these connections each of the plurality of sensor arrays is grouped and in combination able to monitor the entire area of the lateral enclosure. A segmented construction for the lateral enclosure is also possible, with each segment containing one of the sensor arrays.
    Type: Application
    Filed: May 9, 2014
    Publication date: November 13, 2014
    Inventors: Paulus M. Beuger, Bernard Drew
  • Patent number: 8844353
    Abstract: A water level sensor switch installed in a sidewall of a water tank for detecting its water level is disclosed to include a housing having two bearing portions clamped on two opposite sides of the sidewall of the water tank and a tightening up screw fastened to a vertical wall at a different plane relative to the bearing portions and stop against the sidewall of the water tank to affix the housing to the water tank, a micro switch mounted in the housing, and a float connected to a switching lever of the micro switch outside the housing for biasing the switching lever up and down subject to the level of water in the water tank.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: September 30, 2014
    Assignee: Holimay Corporation
    Inventor: Yu-Ming Hsiao
  • Publication number: 20140260602
    Abstract: A water-level detecting system includes a water receiving module located in an electronic device, a first sliding rheostat, a varicap, a frequency-to-voltage converter, a comparing module, and an indicator module. The water receiving module includes a water tank, a floating block received in the water tank, and a connecting portion. The floating block is moved by the rising water level in the water tank to slide the first sliding rheostat. A voltage of the varicap is changeable when the first sliding rheostat slides, and a voltage of the frequency-to-voltage converter is changeable according to the voltage of the varicap. The comparing module compares the voltage of the frequency-to-voltage converter with a predetermined voltage, and the indicator module lights up when the voltage of the frequency-to-voltage converter is greater than the predetermined voltage. The disclosure further offers a water-level detecting method.
    Type: Application
    Filed: October 24, 2013
    Publication date: September 18, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (WUHAN) CO., LTD.
    Inventors: PENG ZHANG, YU-LIN LIU
  • Patent number: 8833158
    Abstract: Sealing systems and level monitors for a tank are disclosed. A housing defines a bore and has exterior dimensions suitable for fitting in a port through the tank. An elongate member or cable passes through the bore of the housing. First and second seal assemblies are set within the bore against first and second stops, respectively, in the housing. The first and second seal assemblies are spaced from one another to form a fluid reservoir and are both sealed to the housing and to the elongate member or cable. The fluid reservoir may be pressured by a bias device. The elongate member or cable may be connected to a float.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: September 16, 2014
    Inventor: Arthur W. Lauder
  • Patent number: 8833159
    Abstract: Fuel senders and methods of assembling fuel senders are disclosed. Fuel senders according to the present disclosure include a housing with detector retaining structure, a detector that is wedged against an inside surface of the housing by the detector retaining structure, and a connector for electrically coupling the detector to a display device. In some embodiments, the detector retaining structure consists of two ribs extending longitudinally along the inside surface of the housing.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: September 16, 2014
    Assignee: ISSPRO, Inc.
    Inventors: Gian-Marco D'Angelo, Dameion Reed Brown
  • Publication number: 20140224010
    Abstract: The present discloses an alternate construction and method for a magnetostrictive probe intended to be used as a tank monitoring device. Height determination, either water or fuel, is referenced to an ultrasonic pickup assembly located inside the shaft at the foot of the probe. With this inverse approach, height measurement takes advantage of the relative geothermal stability of underground storage tanks, or the temperature stability offered by the thermal mass of the fuel, to facilitate a more accurate tank level determination. At that new location, the detection circuit gains the added benefits of being isolated from the effect of magnetic risers, large temperature swings and other undesirable phenomenon that often affect magnetostrictive probe measurements that are referenced to the canister.
    Type: Application
    Filed: February 14, 2013
    Publication date: August 14, 2014
    Inventor: Ambroise Prinstil
  • Patent number: 8776574
    Abstract: A fluid level measurement apparatus supports multiple fluid level sensors of different types, each of which detects a level of fluid and produces an output indicative of the detected fluid level in a different way. The fluid level measurement apparatus is connected to any one of the supported fluid level sensors to measure the fluid level. The fluid level measurement apparatus includes a calculation circuit, multiple output circuits, a determination circuit, and a selection circuit. The calculation circuit calculates the fluid level from a detection voltage. Each output circuit generates the detection voltage based on the output of a corresponding fluid level sensor. The determination circuit determines the connected fluid level sensor. The selection circuit selects the output circuit corresponding to the determined fluid level sensor and allows the calculation circuit to obtain the detection voltage generated by the selected output circuit.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: July 15, 2014
    Assignee: Denso Corporation
    Inventor: Isao Miyagawa
  • Publication number: 20140116131
    Abstract: In at least some implementations, a liquid level sensor includes a liquid level responsive member, first and second circuit elements and a magnetic field member. One circuit element generates a magnetic field and the other is responsive to the magnetic field. The magnetic field member is responsive to movement of the liquid level responsive member and alters, in at least some positions of the magnetic field member, at least one characteristic of the magnetic field experienced by the second circuit element as a function of the position of the magnetic field member. The magnetic field experienced by the second circuit element can be correlated to a position of the magnetic field member which can be correlated to a position of the liquid level responsive member to provide an indication of the liquid level in the tank.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: TI Group Automotive Systems, L.L.C.
    Inventor: John R. Forgue
  • Patent number: 8689627
    Abstract: The invention discloses a low liquid level detecting device comprising a float sensor and a casing. The casing has first to third chambers formed between an upper wall and a bottom wall. The top portion of the first chamber is formed with a top opening. The bottom portion of the first chamber communicates with the bottom portion of the second chamber. The top portion of the second chamber communicates with the top portion of the third chamber. The bottom portion of the third chamber is formed with a bottom opening. A float sensor is mounted inside the third chamber. A drain hole is formed through the bottom part of a chamber wall surrounding the third chamber. A method for detecting a low liquid level using the above low liquid level detecting device is also disclosed.
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: April 8, 2014
    Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.
    Inventors: Jizhou Wu, Pengjin Lin
  • Publication number: 20140090466
    Abstract: A fuel sensing system and method of measuring and monitoring an amount of fuel in a storage tank for power operated equipment. The method comprises the steps of positioning a fuel sensor assembly within a storage tank that supports fuel provided to the power operated equipment during operation and generating a pulse width modulated output signal with a pulse width modulation generating circuit. The pulse width modulated output signal provides a signal width proportional to the fuel level in the storage tank. The method also comprises processing the pulse with modulated output signal with non-transient computer readable medium by one or more processors internal to a microcontroller to form an output value indicating the amount of fuel in the storage tank and displaying the output value on an indicator display mounted on the power equipment.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: Delta Systems, Inc.
    Inventor: Nicholas Schragal
  • Publication number: 20140076046
    Abstract: Provided is a fuel amount detection device for a vehicle positioned in a fuel tank of the vehicle to detect a remaining fuel amount. In the fuel amount detection device for a vehicle, a resistor pattern and a conductive pattern formed on a resistor substrate and spaced apart from each other are electrically connected to each other by a conductive material coated on a conductive film pressed by a contactor to prevent abrasion of the resistor pattern formed on the resistor substrate, thereby making it possible to improve durability. In addition, since the resistor pattern is sealed by the conductive film, it does not contact fuel, such that corrosion of the resistor pattern is prevented, thereby making it possible to accurately detect a fuel amount.
    Type: Application
    Filed: November 22, 2013
    Publication date: March 20, 2014
    Applicant: COAVIS
    Inventors: KyungHwan KIM, Jeongsik KIM
  • Publication number: 20140020464
    Abstract: A transducer for determining the level of liquid within a container includes a mounting head adapted for connection to the container and a sensor assembly adapted to extend into the container from the mounting head. The sensor assembly includes a housing having an upper portion connected to the mounting head and a lower portion that extends from the upper portion. The lower portion has a hollow interior that is isolated from liquid within the container. At least one sensor element is located within the hollow interior. A float rod is pivotally connected to the housing and rotates in response to a change in liquid level within the container. An actuator located outside of the housing is connected to the float rod and is operative to change an electrical state of the at least one sensor element to thereby indicate a level condition of the liquid within the container.
    Type: Application
    Filed: September 25, 2013
    Publication date: January 23, 2014
    Applicant: Texas LFP, LLC
    Inventor: Gagik Farmanyan
  • Patent number: 8567244
    Abstract: A transducer for determining the level of liquid within a container includes a mounting head adapted for connection to the container and a sensor assembly adapted to extend into the container from the mounting head. The sensor assembly includes a housing having an upper portion connected to the mounting head and a lower portion that extends from the upper portion. The lower portion has a hollow interior that is isolated from liquid within the container. A plurality of sensor elements are located within the hollow interior. A float rod is pivotally connected to the housing and a float is connected to a distal end of the float rod to thereby cause pivoting movement of the float rod in response to a change in liquid level within the container. An actuator is located outside of the housing and is operatively associated with the float rod for pivotal movement therewith.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: October 29, 2013
    Assignee: Texas, LFP, LLC
    Inventors: Gagik Farmanyan, Jorge Manuel Prieto
  • Publication number: 20130269432
    Abstract: An electromechanical, fill-level, measuring device, comprising: a float, an outer drum with an outer ring of magnets, an inner drum with an inner ring of magnets, electromagnetic measuring elements, a measuring shaft with, and a servomotor with an drive shaft. The drive shaft is coupled with the measuring shaft via a transmission, wherein the servomotor rotates the measuring shaft via the transmission as a function of a control signal ascertained from the difference value of the measuring elements, so that, by relative movement between the outer and inner drums produced by a change of the liquid level to be measured, the difference value is returned to zero and from the rotation of the measuring shaft the current fill level measured value is ascertained.
    Type: Application
    Filed: December 22, 2011
    Publication date: October 17, 2013
    Inventors: Wolfgang Brutschin, Andreas Kaiser, Carmen Sawitzki, Keita Okazaki
  • Patent number: 8549911
    Abstract: A liquid level sensor employs a set of axially displaced magnetic sensing switches and a magnet on a float that may rise and fall on liquid level to activate and deactivate the switches. The switches and magnet are configured so that movement of the magnetic float activates a new switch before deactivation of an adjacent previously activated switch. An electronic circuit provides a signal based on the uppermost activated switch to provide a signal that is monotonic with liquid level. The design may be readily implemented using reed switches and a resistive ladder.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: October 8, 2013
    Assignee: Ilinois Tool Works Inc.
    Inventors: Jeffrey P Rudd, James M Pellegrini, Brian J Bonenfant
  • Patent number: 8539829
    Abstract: A retrofit assembly for installing a fuel quality sensor with a fuel level probe having a shaft extending through a tank interface into a fuel storage tank. The shaft, which comprises a magnetostrictive element extending therealong, is coupled with the fuel quality sensor. An isolation sheath is sized for receipt over the shaft and to extend between the fuel quality sensor and the tank interface. The sheath has a cross-sectional profile configured to define at least one passage between the sheath and the shaft when the sheath is received over the shaft. The passage(s) extend between a proximal end and a distal end of the sheath. Also provided is a product-level float comprising at least one product-level magnet for measuring the level of fuel in the fuel storage tank. The product-level float is configured to translate along the sheath with the level of fuel in the fuel storage tank.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: September 24, 2013
    Assignees: Veeder-Root Company, Danaher UK Industries Limited
    Inventors: Richard Bardsley, Kent Reid
  • Publication number: 20130239677
    Abstract: Embodiments of the invention are directed towards a sliding liquid level sensor which is mounted in a fuel tank of a vehicle for detecting a remaining amount of a liquid fuel in the tank. The liquid level sensor has a float, a plurality of electrodes, and a sliding contact point configured to slide on the electrodes in accordance with a displacement of the float. The electrodes preferably contain 100 parts by weight of a silver-palladium alloy and preferably 3-20 parts by weight of glass. The silver-palladium alloy preferably contains 20-60% by weight of silver and preferably 80-40% by weight of palladium. The sliding contact point is made from a palladium-nickel alloy that preferably contains 70-90% by weight of palladium and preferably 30-10% by weight of nickel.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Applicants: HYUNDAM IND. CO., LTD, AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Kunio TAKAGI, Jin Wook JANG, Hoon Pyo KWAK
  • Publication number: 20130180328
    Abstract: A transducer for determining the level of liquid within a container includes a mounting head adapted for connection to the container and a sensor assembly adapted to extend into the container from the mounting head. The sensor assembly includes a housing having an upper portion connected to the mounting head and a lower portion that extends from the upper portion. The lower portion has a hollow interior that is isolated from liquid within the container. A plurality of sensor elements are located within the hollow interior. A float rod is pivotally connected to the housing and a float is connected to a distal end of the float rod to thereby cause pivoting movement of the float rod in response to a change in liquid level within the container. An actuator is located outside of the housing and is operatively associated with the float rod for pivotal movement therewith.
    Type: Application
    Filed: September 24, 2012
    Publication date: July 18, 2013
    Applicant: ROCHESTER GAUGES, INC.
    Inventors: Gagik Farmanyan, Jorge Manuel Prieto