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8978464 Magnetostrictive probe with inverted signal detection  
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...
8967191 Devices, methods, and algorithms for rapid measurement of mean surface level change of liquids in containers  
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...
8915134 Instrument fault indication apparatus  
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...
8844353 Water level sensor switch  
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...
8833159 Fuel senders and methods of assembling fuel senders  
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...
8833158 Sealing system and level monitor for a tank  
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...
8776574 Fluid level measurement apparatus  
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...
8689627 Low liquid level detecting device and method  
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...
8567244 Liquid level transducer with isolated sensors  
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...
8549911 Multi-level liquid level magnetic sensor  
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...
8539829 Magnetostrictive probe fuel quality sensor retrofit assembly  
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...
8448750 Lubrication system level control  
A machine lubrication system that includes an assembly for sensing the level of lubricant in the reservoir, the reservoir including a follower that travels axially within the reservoir and...
8443664 Equalizing container for a hydraulic motor vehicle brake system  
An equalizing tank for a hydraulic motor vehicle brake system, with a housing including a housing upper part and a housing lower part, and with a device for monitoring the fluid level in the...
8438920 Assembly structure of liquid level detecting apparatus and liquid level detecting apparatus  
An assembly structure of a liquid level detecting apparatus includes a sliding arm having a junction for electrically contacting a resistor and an arm holder attached to the sliding arm. The...
8402822 Process tanks in combination with a float magnetostrictive level detector  
The invention is a process tank containing a direct level magnetostrictive measurement system disposed directly in the tank, where the level system preferably communicates to a remote location....
8291946 Apparatus for sensing fuel level in fuel tank  
Provided is an apparatus for sensing a fuel level in a fuel tank for sensing an amount of fuel remaining in the fuel tank mounted in a vehicle. The apparatus for sensing a fuel level according to...
8261612 Accumulator with both direct and remote quantity level indication  
An apparatus for determining the fluid level of a container, such as an accumulator, may include both a remote quantity indicator and a direct quantity indicator. The remote quantity indicator may...
8261613 Fuel sender with reed switch and latching magnets  
The present invention relates to a fuel sensor adapted for sensing the level of fuel in a vehicle fuel tank and in particular to a fuel sensor adapted to sensing the level of fuel which would be...
8249829 Online condition-based monitoring for tank farms  
A method for online condition-based monitoring (CBM) of a tank farm including a plurality of storage tanks includes providing a tank model including a diagnostic and/or predictive tank model based...
8220482 Devices, methods, and algorithms for rapid measurement of mean surface level change of liquids in containers  
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...
8181518 Float for liquid level indicator  
A magnetic float is provided for a level indicator system that is suitable for low density liquids at high pressure, such as C3-liquids. The float comprises a hollow tube, first and second...
8181517 Sender card contamination reduction due to current application to sender card  
Disclosed herein is a system for use in a tank containing a contaminative fluid. The system includes an electrically conductive resistive material in fluid communication with the contents of the...
8171786 Fuel inventory monitoring system  
An ultrasonic-based or radar-based apparatus and method for fuel inventory measurements and for the detection and characterization of materials in a fuel tank, including sludge, water,...
8171787 Liquid-level detecting apparatus  
A liquid-level detecting apparatus is provided. The liquid-level detecting apparatus includes a resistance plate with an insulating substrate; conductive segments on the insulating substrate at...
8082785 Inductive liquid-level sensor  
An inductive liquid-level sensor employs a central shaft supporting multiple independent electrical loops that may be interrogated to detect the proximity of the conductive element in the float...
8028575 Liquid level detecting device  
A liquid level detecting device includes a rotative member having a bearing portion and a stationary member having an axis portion. The axis portion is fitted to a hole of the bearing portion,...
8024969 Liquid level detection device  
A liquid level detection device includes a sensor provided in a container which stores a liquid therein and having a variable resistance which changes a resistance value in association with a...
8015871 Sender unit for sensing the level of remaining fuel in a fuel tank utilizing a non-contacting sensor  
The present invention relates to a sender unit for sensing the level of remaining fuel in a fuel tank utilizing a non-contacting sensor. The sender unit for sensing the level of remaining fuel in...
7966879 Fluid storage and dispensing system including dynamic fluid monitoring of fluid storage and dispensing vessel  
A monitoring system (100) for monitoring fluid in a fluid supply vessel (22, 24, 26, 28, 108) during operation including dispensing of fluid from the fluid supply vessel. The monitoring system...
7905145 Capacitive gauge for fuel tank  
Capacitive gauge for fuel tank comprising a measurement capacitor, a reference capacitor and at least one standard capacitive device, fed by and connected to an electronic interpretation circuit...
7845224 Liquid level sensor and liquid level estimation method  
A sensor for detecting a liquid level, including a measurement capacitor, a reference capacitor, an integrating capacitor, a calibration capacitor, a controller, an amplifier, a comparator, and a...
7793539 Electrostatic charge control for in-tank fuel module components  
A grounding arrangement for an in-tank fuel system includes a fuel level sensor assembly of a fuel module comprising a conductive card body and a resister card supported on the conductive card...
7784342 Multi-slope variable resistance fuel sender unit  
A fuel sender unit is provided for deployment on a vehicle having a fuel tank. The fuel sender unit includes a float arm configured to move in relation to the volume of fuel held within the fuel...
7748269 Low liquid level detecting device and method  
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...
7721602 Filling level sensor  
In the case of a filling level sensor (1) for detecting a fuel filling level in a fuel tank (2), a lever arm (7) which secures a float (6) has a guide part (14). The guide part (14) interacts with...
7725273 Apparatus for monitoring height of liquid in storage tank  
An apparatus for monitoring a height of liquid in a liquid storage tank is provided, the apparatus includes a first rotatable element rotatable in response to a change of a liquid level in a...
7703322 Liquid level detecting device and method of manufacturing same  
A liquid level detecting device for detecting liquid level contained in a tank includes a float and an arm that moves in a prescribed manner when liquid level changes, a permanent magnet for...
7688193 Oil level detection device for internal combustion engine  
An oil level detection device for an internal combustion engine, which comprises: a housing permitting entry therein of oil; a float provided within the housing and vertically movable with the oil...
7681447 Liquid level detection apparatus  
A liquid level detection apparatus of the present invention includes contacts provided at a distal end portion of a contact plate, and resistance plates which are formed on a wiring board, and...
7677098 Light sensing contactless fuel level sensor  
A contactless, sealed fuel level sensor for determining a fuel level in a fuel tank and producing a level indicative signal includes a frame, a cover, a float arm, a float and a light-responsive...
7632385 Reference electrode for potentiometric measurements, and method of monitoring the reference electrode  
A reference electrode for potentiometric measurements has a housing (2) with a hollow space (4) containing a liquid reference electrolyte (6) as well as a conductor element (8) immersed in the...
7621182 Sealed fuel level detector  
A fuel level detector has a float connected to an arm that rotates a pivot pin. The pivot pin rotates in a hole in the wall of the detector, and the hole is sealed by a sleeve. One end of the...
7617725 Electric generator protection system  
A protection system for an electric generator includes a fluid sensor to measure a fluid level in a fuel tank, an indicator lamp to display the fluid level, a timer to measure a time interval...
7610806 Electronic level gage assembly  
A thermowell extends downwardly into tank liquids from the roof of the tank. A magnetostrictive wave guide probe is positioned on the inside of the thermowell and a magnetic float is slidably...
7591178 Grounded wiper assembly for fuel sensor  
A grounded wiper assembly for a fuel sensor includes a wiper housing for rotation relative to a variable resistor and a wiper with at least one contact operatively supported by the wiper housing...
7565837 Fuel level sensor variable resistor assembly  
A variable resistor assembly is preferably adapted for use with a fuel level sensor and includes an arcuate resistive area including a plurality of radially oriented and spaced apart conductive...
7562571 Device and method for detecting material by means of gravitational field analysis  
Described is a sensor for filling level measurement using a gravitational field analysis, comprising a first and a second gravimeter unit. The measurement is effected in a contactless manner, via...
7549333 Fluid level sender assembly and method of making a fluid level sender assembly  
A fluid level sender mount assembly includes a first mounting member having a chamber and a second mounting member having an elongate docking portion. The docking portion may be sized to slidably...
7536989 Fuel tank cover body  
A fuel tank cover body which can be easily manufactured. The fuel tank cover body comprises a cover 2 for closing the opening of a fuel tank; a liquid level detection unit 3 housed in the fuel...
7484409 Fluid level switch  
A fluid level switch for a machine having a fluid reservoir adapted to contain a fluid at an acceptable level. The fluid level switch includes a mounting plate, a float housing, and a float...