| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073306000 | Combined | 10 |
| 20090031799 | Float diagnostics for level measurement - A float level sensing system comprises a float and an elongated probe for sensing position of the float. The float is mounted proximate the probe so that the float floats atop the process material. The float drops outside a sensing range of the probe responsive to a failure of the float. A sensing circuit is operatively associated with the probe for measuring a characteristic of the probe representing position of the float and is operative to indicate a fault condition if the float is outside of the sensing range of the probe. | 02-05-2009 |
| 20100269585 | LIQUID DETECTING DEVICE - A liquid detecting device includes a water tank, a stabilizer received in the water tank, a floating element received in the water tank, and a sensor disposed underneath the water tank. The floating element has a first end and a second end. A volume of the first end is greater than that of the second end. The floating element has a permanent magnet disposed in the second end. When the water tank is filled with water, the first end is floating such that the stabilizer abuts against the floating element. The second end rotates to approach the sensor such that the sensor interacts with the permanent magnet to indicate presence of water. When the water tank is empty, the first end abuts against the water tank such that second end is away from the sensor. The sensor does not interact with the permanent magnet to indicate absence of water. | 10-28-2010 |
| 20130008247 | 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 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. | 01-10-2013 |
| 20140150549 | FILL LEVEL MEASUREMENT SYSTEM AND METHOD FOR DETERMINING A FILL LEVEL - A measurement system for determining a liquid fill level of a tank, including a floating sensor configured to float on the surface of a liquid contained in the tank, at least three reference sensors mounted at a hull of the tank in a spatially fixed arrangement, and a control device to control the floating sensor and the reference sensors, wherein at least one of the floating sensor and the reference sensors can emit an acoustic signal to the remaining sensors, wherein the remaining sensors can receive the emitted acoustic signal, the control device configured to determine signal travelling times of the acoustic signal from the emitting sensor to the receiving sensor, to compute a spatial position of the floating sensor with reference to the reference sensors from the signal travelling times and to determine the liquid fill level on the basis of the computed spatial position of the floating sensor. | 06-05-2014 |
| 20160153824 | WATER LEVEL DETECTING DEVICE AND DEHUMIDIFIER HAVING THE SAME | 06-02-2016 |
| 073307000 | With warning signal or alarm | 5 |
| 073308000 | Electric | 5 |
| 20100132455 | Liquid Level Measuring Apparatus - A liquid level measuring apparatus for measuring the level of a liquid in a bladder with flexible walls in which liquid in a container raises and lowers a plurality of floats, each float containing a magnetic element oriented in a vertical position. The floats are positioned within an inner guide tube. Pins of non-magnetic material restrict the vertical movement of the floats to sections of the inner guide tube with one float per section. The inner guide tube is placed inside the bladder. After placement of the inner guide tube, an outer sleeve is slid over the inner guide tube from the outside of the bladder with the bladder wall between the inner guide tube and outer sleeve. The outer sleeve contains magnetic reed switches that can be activated by the magnetic elements in the inner guide tube. Means of orientating the inner guide tube inside the bladder and assuring that the outer collar is at the correct position on inner guide tube such that the magnetic reed switches are activated by their associated float magnetic when the float magnetic is at the bottom of its section in the inner guide tube are provided. An electronic output device monitors the state of the magnetic reed switches to indicate the liquid level. | 06-03-2010 |
| 20110239758 | METHOD FOR OPTIMIZING THE SWITCHING BEHAVIOUR OF A VESSEL WARNING DEVICE OF AN EQUALIZING VESSEL AND EQUALIZING VESSEL FOR A HYDRAULIC MOTOR VEHICLE BRAKE SYSTEM HAVING A VESSEL WARNING DEVICE WITH OPTIMIZED SWITCHING - A method for optimizing the switching behaviour of a tank warning device of a compensation tank, in particular for a hydraulic motor-vehicle brake system, with a housing and the tank warning device for monitoring the tank filling level of the compensation tank. The tank warning device including a switching unit with a reed contact as a switching element, which can be switched by means of a magnet at a switching point S at which the switching unit generates a signal for an electronic control unit. A compensation tank including a tank warning device which has been optimized in terms of switching by means of a method according to the invention is also disclosed. The reed contact and the magnet are matched to one another in a manner optimized in terms of switching in such a way that the magnet switches at a single switching lobe of the reed contact. | 10-06-2011 |
| 20140318238 | LEAK SENSOR FOR A PROVER - A leak sensor for sensing fluid flow through the bearings and seals about a shaft extending from a prover. Any leakage of fluid through the bearings and seals will migrate into the annular cavity within a housing and surrounding the shaft. A conduit or passageway in fluid communication with the annular cavity conveys the leaking fluid into a collection chamber. A float within the collection chamber will trigger an electrical or mechanical signal when the float rises a preset distance. If electrical, the signal is transmitted to an alarm unit to trigger a warning indicative of the amount of fluid in the collection chamber. | 10-30-2014 |
| 20140366627 | METHOD AND APPARATUS FOR DETECTION OF PHASE SEPARATION IN STORAGE TANKS - A system and method for detecting phase separation in storage tanks is provided. At least one float has a density calibrated to detect a density differential among surrounding fluids. The float is buoyant on a relatively more dense lower layer of fluid such as phase separated fuel or pure water, while remaining submerged in a relatively less dense upper layer of fluid such as a gasoline/ethanol blend. A detection device sends a signal when the float rises or falls above or below a preset acceptable level. | 12-18-2014 |
| 20150143900 | TEST AND MONITORING SYSTEM FOR A SUMP PUMP INSTALLATION HAVING A SELF-MONITORING LIQUID LEVEL SENSING MODULE - A liquid level sensing module for sensing a high liquid level in a sump container rising comprises a first liquid-actuated switch which provides a first output signal upon the liquid level reaching a first level, and a second liquid-actuated switch which provides a second output signal upon the liquid level reaching a second level above the first. A delay circuit delays the first output signal by a period if time sufficient for the liquid to rise from the first switch level to the second switch level to produce a delayed output signal. An alarm circuit produces a fault signal indicating a switch module fault upon the occurrence of the second output signal. An alarm circuit produces a fault signal upon the occurrence of the second output signal in the absence of the first output signal, or upon the occurrence of the delayed output signal in the absence of the second output signal, and the occurrence of either the delayed output signal or the second output signal, producing an alarm signal indicative of the pump failing to function. | 05-28-2015 |
