Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 8161813 | Fill level measuring in mobile containers or transport silos A fill level in a mobile container or in a transport silo is determined using a position sensor that measures the angle of inclination of the container. The fill level data is acquired using a fill level sensor. On the basis of the measured data of the position sens... | 04/24/2012 |
| 7942042 | Apparatus configured to estimate quantity of fuel stored in vehicle An apparatus, configured to estimate quantity of fuel stored in a vehicle, includes: a fuel tank; a fuel quantity measure; a filtering processor; a filter gain setter, configured to set a filter gain; and a vehicle status detector, configured to detect which one of ... | 05/17/2011 |
| 7891241 | Remote fire extinguisher station inspection An apparatus for remote inspection of fire extinguishers at one or a system of fire extinguisher stations includes, e.g., at each fire extinguisher station: a detector for lack of presence of a fire extinguisher in its installed position at the fire extinguisher sta... | 02/22/2011 |
| 7814786 | Wireless sensing system for non-invasive monitoring of attributes of contents in a container A wireless sensing system monitors the level, temperature, magnetic permeability and electrical dielectric constant of a non-gaseous material in a container. An open-circuit electrical conductor is shaped to form a two-dimensional geometric pattern that can store an... | 10/19/2010 |
| 7730779 | Multiphase-liquid level data logger A multiphase-liquid level sensing system for sensing a layer depth and thickness of a liquid of a first phase that floats on a liquid of a different second phase includes an elongated stem that defines an elongated cavity. A float, which exhibits a sensible property... | 06/08/2010 |
| 7574911 | Remote fire extinguisher station inspection An apparatus for remote inspection of fire extinguishers at one or a system of fire extinguisher stations includes, e.g., at each fire extinguisher station: a detector for lack of presence of a fire extinguisher in its installed position at the fire extinguisher sta... | 08/18/2009 |
| 7403860 | Method using magnetostrictive probe buoyancy for detecting fuel density A magnetostrictive fuel level probe includes a spring-loaded foot. The probe shaft of the fuel level probe moves up and down within the spring-loaded foot as a function of fuel density. The spring-loaded foot includes a reference magnet whose height relative to the ... | 07/22/2008 |
| 7356427 | Methods and systems for estimating a nominal height or quantity of a fluid in a mixing tank while reducing noise Systems and methods are provided for estimating the height of a fluid contained in a mixing tank. A dynamic control device which operates as an external observer is used for controlling and monitoring the estimation. This estimate of the height is then compared to t... | 04/08/2008 |
| 7331225 | Non-contact type liquid level sensor A non-contact type liquid level sensor according to the invention has an electromagnetic shield plate mounted on a housing for blocking effects from an external magnetic field onto a magnetoelectric converting element. ... | 02/19/2008 |
| 7322744 | Temperature measurement device A temperature measuring device includes a temperature-responsive element that mechanically moves a first inductive assembly component relative to a second inductive assembly component in response to temperature changes. The movement of the first inductive assembly c... | 01/29/2008 |
| 7302362 | System and method for efficient and collective adjustment of sensor reporting ranges for long-lived queries A system and method for providing energy-efficient support of continuous aggregate queries in a sensor network by efficiently orchestrating the collection and transmission of data gathered by a collective set of sensors to ensure conformance to a specified QoI bound... | 11/27/2007 |
| 7278311 | Liquid level and density measurement device A liquid level and density measurement device is disclosed. The device comprises an elongated magnetostrictive transducer and at least two transducer magnets embedded into floats that can freely move along a transducer. One float is relatively more sensitive to liqu... | 10/09/2007 |
| 7265677 | External device indicating that a tank is filled up System for indicating when a tank is full. The system includes a signal and control box. A container is connected to the tank. The container has a base, a float, an upper portion, and a lower portion. An orifice is arranged at the upper portion of the container. The... | 09/04/2007 |
| 7265520 | Electronic apparatus and method of controlling the electronic apparatus An electronic watch in which the display on a liquid crystal display 236 is prohibited when the detected output voltage of a secondary battery 220 drops to a first predefined voltage. An initialization process is performed when the detected voltage of ... | 09/04/2007 |
| 7251997 | Fuel tank module control system A fuel tank module control system configured to measure fuel level and fuel tank vapor pressure, the system having an aspirator to use air or liquid fuel to vapor, an oscillator cyclically producing pressurized vapor, and a pressure sensor that alternately measures ... | 08/07/2007 |
| 7240549 | Measurement of gas fuel amount A control unit 40 acquires acceleration α sensed by an acceleration sensor 31, and if the control unit 40 determines that acceleration α does not equal zero, the control unit 40 again acquires acceleration α. In the event that the cont... | 07/10/2007 |
| 7207218 | Liquid residual quantity detecting method, liquid residual quantity detecting device, program for implementing the method, and storage medium storing the program A liquid residual quantity detecting method which is capable of accurately detecting the residual quantity of a liquid in an apparatus without being affected by the position of the apparatus, to thereby prevent a user from carelessly or erroneously believing that th... | 04/24/2007 |
| 7201051 | Method for detecting fuel in oil of an internal combustion engine A method for detecting fuel leaking into an oil pan containing oil which is used to lubricate an internal combustion engine utilizes a plurality of sensors. The method includes the step of measuring a plurality of parameters of the oil using each of the plurality of... | 04/10/2007 |
| 7201052 | Fuel measuring device The present invention relates to a fuel measuring device, more particularly, to a fuel measuring device having a non-intrusive (or non-contact) structure between a rotor and a magneto resistive sensor, resulting in reducing of measurement errors that are usually cau... | 04/10/2007 |
| 7194814 | Self-balancing, no-spin magnet compass A self-balancing, no-spin magnetic compass. A described embodiment includes a compass card assembly, a retainer assembly, a pivot assembly, a gimbal assembly, a cup, and a dome. The compass card assembly includes an air chamber which provides buoyancy. The retainer ... | 03/27/2007 |
| 7174783 | Remote monitoring of fluid containers Apparatus for remote inspection of fluid containers, e.g., portable tanks, includes an electronic circuit in communication between each container (or at various locations along a pipeline) and a remote central station. The electronic circuit is adapted to issue a si... | 02/13/2007 |
| 7177750 | System for influencing the speed of a motor vehicle System for evaluating the driving environment of a motor vehicle and for influencing the speed of the motor vehicle in its own lane, with an electronic control unit, which is connected to a signal generator generating a signal which is characteristic of the desired ... | 02/13/2007 |
| 7095330 | Disposable liquid level sensor having a virtual ring A liquid level sensor for standard bottles containing highly viscous materials such as gels so that the bottles may be inserted into an appliance to alert a user when the bottle is empty. The holder conveniently locates the bottle in the holder which includes insert... | 08/22/2006 |
| 7055385 | Apparatus and method for measuring the amount of fuel in a vehicle using transmission lines The present invention relates to an apparatus and method for measuring the amount of fuel in a vehicle using transmission lines. An apparatus for measuring the amount of fuel in a vehicle according to an embodiment of the invention comprises a pair of transmission l... | 06/06/2006 |
| 7013727 | Dialysis machine for actuating a method for detecting a liquid level in a container in a circuit A container of a dialysis machine has a determined shape and a known volume occupied in part by a volume of a mass of blood; a remaining part is occupied by a volume of a mass of gas. A disturbance is induced in a combined mass of the liquid and the gas in the conta... | 03/21/2006 |
| 7012536 | Retain overfill monitor with integrated over-vacuum and over-pressure detection A system for monitoring the conditions within the fuel storage compartments of a transport tank comprises an overfill pressure vacuum probe installed in each fuel storage compartment and which has a first sensor for detecting the presence of fuel at a predetermined ... | 03/14/2006 |
| 7013225 | Method for determining the amount of an operating medium in a motor vehicle The invention relates to a method for determining the fill quantity of an operating medium, in particular of the engine oil in a motor vehicle having a reservoir container of the operating medium and having a data processing device for determining the fill quantity ... | 03/14/2006 |
| 6992757 | Method and system for encoding fluid level A level transmitter can generate a level measurement signal according to the position of a float that follows fluid level in a tank. The transmitter can comprise an optical encoder with a patterned disk that is linked to the float so that fluid level change produces... | 01/31/2006 |
| 6975216 | System and method for indicating fluid condition A fluid condition indicating system and method using visual and audible devices. The system includes a circuit having visual and audible indicators, a power supply, and a plurality of switches or sensors. A start switch is coupled to the power supply, the visual ind... | 12/13/2005 |
| 6956382 | Isolation circuit A radar level gauge using microwaves coupable to a two-wire process control loop for measuring level of a product in a tank. A microwave antenna unit is directable into the tank. A low power microwave source sends a microwave signal through the antenna unit into the... | 10/18/2005 |
| 6938635 | Level switch with verification capability The present invention comprises a novel level switch which may be employed to detect liquid levels within a process vessel. The level switch of the present invention is self validating so that manual testing is not required in order to ensure proper operation and sw... | 09/06/2005 |
| 6931926 | Liquid depth sensing system with liquid identification capability The present liquid depth sensing system with its liquid identification capability provides an economical device which may be installed in a multitude of different applications to perform multiple quantity measurement and detection functions. The present system inclu... | 08/23/2005 |
| 6931929 | Filler detection method and filler detection device A sine wave electric signal whose frequency continuously varies within a predetermined frequency range is applied to a piezoelectric speaker, whereby a vibration frequency characteristic of the piezoelectric speaker is detected. A change of the frequency characteris... | 08/23/2005 |
| 6925872 | Temperature-sensing device for determining the level of a fluid The present invention deals with determining the level of fluid in a container. Typically, a beverage container containing a liquid will absorb heat energy from the surrounding environment at a greater rate than a gaseous component in the headspace of the beverage c... | 08/09/2005 |
| 6901813 | Flow meter alarm device A flow meter alarm device easily attached to and removed from a flow meter at various locations along the length of the flow meter. The device is compatible with flow meters which have a float for measuring flow velocity. The device preferably has two housings, exte... | 06/07/2005 |
| 6895816 | Apparatus for remotely detecting fluid reservoir levels in fluid and gas well An apparatus for detecting fluid levels in an oil and gas well environment and transmitting a signal to a remote site when sensing that the level has reached a predetermined amount. ... | 05/24/2005 |
| 6889546 | Fuel tank interface assembly A fuel tank interface assembly is provided. The assembly provides interface and control to a plurality of different types of components. Some of the components may be situated inside the tank. A connector is sealingly mounted through a single opening in the tank and... | 05/10/2005 |
| 6889547 | Liquid level input assembly for measuring the height of a column of liquid An apparatus which indicates a level of a column of liquid in a storage vessel. A liquid level input assembly comprises flexible first and second sealing members which cooperate to form an enclosed chamber therebetween. The column of liquid applies a hydrostatic inp... | 05/10/2005 |
| 6847291 | Apparatus for detection of water level and temperature in a bathing appliance An apparatus operable in a wet environment for detecting the presence or absence of water in a non-conductive vessel, by measuring changes in dielectric constant and detecting the temperature of water in same vessel. A conductive element coupled to a sensing and swi... | 01/25/2005 |
| 6819250 | Out-of-liquid sensor, and liquid supply device using same The present invention provides a highly universal out-of-liquid sensor that allows an out-of-liquid condition to be accurately detected for a long time, and provides a liquid supply device using the same. The out-of-liquid sensor 1, that is mounted in a liqui... | 11/16/2004 |
