| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | LIQUID LEVEL WARNING DEVICE | US12133437 | 2008-06-05 | US20090303060A1 | 2009-12-10 | Abdulmohsen Ahmed Almoumen |
| A liquid level warning device with a separate audible alarm is disposed in a liquid tank for indicating the amount of liquid in the tank. The device also includes a plurality of float switches disposed at pre-selected levels within the tank and a plurality of LED's for indicating the level of liquid in the tank. A separate audible alarm independent of the visual indicators sounds an alarm when the tank is at a pre-selected level. A float switch is also disclosed. | ||||||
| 242 | Plumb probe assembly for a level measuring device | US12000744 | 2007-12-17 | US07565750B2 | 2009-07-28 | Dick Wu |
| A plumb probe assembly for a level measuring device has a plumb and a connection assembly. The plumb has an inner connecting tube. The connection assembly has two connectors and two clip brackets. The connectors are slidably mounted together while one of the connector firmly connects to the inner connecting tube of the plumb. The clip brackets are movably connected together by at least one resilient device supplying a clipping force and clip around the connectors to hold connectors firmly together. When a force greater than the clipping force, applied to the plumb, the clip brackets separate and the plumb falls into the particulates in the container. The plumb will not cause damage to a particulate discharging device and will disconnect with the connection assembly. A replacement plumb may then be attached to the connection assembly for continued operation. | ||||||
| 243 | PLUMB PROBE ASSEMBLY FOR A LEVEL MEASURING DEVICE | US12000744 | 2007-12-17 | US20090151180A1 | 2009-06-18 | Dick Wu |
| A plumb probe assembly for a level measuring device has a plumb and a connection assembly. The plumb has an inner connecting tube. The connection assembly has two connectors and two clip brackets. The connectors are slidably mounted together while one of the connector firmly connects to the inner connecting tube of the plumb. The clip brackets are movably connected together by at least one resilient device supplying a clipping force and clip around the connectors to hold connectors firmly together. When a force greater than the clipping force, applied to the plumb, the clip brackets separate and the plumb falls into the particulates in the container. The plumb will not cause damage to a particulate discharging device and will disconnect with the connection assembly. A replacement plumb may then be attached to the connection assembly for continued operation. | ||||||
| 244 | Methods and systems for determining a position of a probe | US11268867 | 2005-11-08 | US07353688B2 | 2008-04-08 | Richard Raymond Harazin; Ronald Alvin Zweifel |
| The present methods and systems include aligning at least two sensors with one or more known locations, selecting at least two of the at least two sensors, electrically driving the probe, based on signals received by the selected sensors, determining whether the probe is aligned with the known location(s), and, optionally adjusting the probe position based on the determination. The methods and systems also include repeatedly returning to electrically driving and positioning the probe until the probe is aligned with the selected sensors, and/or repeatedly returning to selecting at least two of the at least two sensors. The relative position of the probe with respect to the selected sensors may also be determined. | ||||||
| 245 | Leak detector | US10600899 | 2003-06-19 | US07082827B1 | 2006-08-01 | Scott R. Samuelson |
| An example of an apparatus for detecting the lowering of a top surface of a liquid includes a housing that has a housing hole, and an insertion member attached to the housing. A dowel is inserted into the housing hole, and a float is attached to the dowel. A detector switch that has an actuator arm is also attached to the housing, with the actuator arm of the detector switch located proximate a first end of the dowel. An audio transducer is attached to the housing, to sound an alarm if the first end of the dowel does not push the actuator arm to a position near the body of the detector switch, for example due to the lowering of the top surface of a liquid in which the float is placed. | ||||||
| 246 | Rotary remote visual liquid quantity indicator | US10938793 | 2004-09-10 | US20060053879A1 | 2006-03-16 | Filip Reinis; Steven Eccles; Mathew Schacht |
| A rotary remote visual liquid quantity indicator allows a user to remotely determine the amount of liquid in a container, such as an accumulator on an aircraft. A flexible rotary cable assembly may be coupled between a rotatable drum and a remote indicator having a rotatable cap, the rotatable drum responsive to axial motion of a sweeper within the accumulator. Changes in the fluid level of the accumulator may be translated into rotational motion of the rotatable drum, which, via the flexible rotary cable assembly, changes a reading on a remotely located indicator. | ||||||
| 247 | Liquid level sensor | US10233097 | 2002-08-28 | US06666085B1 | 2003-12-23 | Jerry Watson Lowe |
| A liquid-level measuring device measures the liquid level in a tank. This invention measures liquid level by measuring the pressure at the bottom of the tank. A pressure sensor is placed in the top sealed end of a pipe extending from above the top of the tank down to and open into the bottom of the tank. When the tank is empty the pressure is zero (relative to atmospheric pressure). As the liquid level of the tank rises from empty to full, the pressure rises according to the weight of the liquid. An electronic pressure sensor is used to measure the pressure. The output of the pressure sensor is amplified and sent to an operator display device. | ||||||
| 248 | Level sensor and control | US10154959 | 2002-05-24 | US20030217596A1 | 2003-11-27 | Larry E. Dirksen |
| A sensor for measuring the level of free-flowing particulate material in a storage bin comprises an electronic load cell fixedly positionable at the upper end of the storage bin and having a cable suspended therefrom in the storage bin. The lower end of the cable is adjacent the lower end of the storage bin so that the load of the cable alone causes of the electronic load cell to provide a first signal to a process controller indicative of an empty storage bin. The load of the cable plus the downward force of any particulate material in the storage bin on the cable causes the electronic load cell to provide a second output signal to the process controller proportional to the amount of particulate material in the storage bin. The process controller provides a low level output signal to a conveyor system for filling the storage bin when the level of the particulate material in the storage bin matches a predetermined low level and discontinues the low level output signal when the level of the particulate material in the storage bin matches a predetermined high level. The process controller, which includes a clock, also can provide a real time readout of the rate of discharge of the particulate material from the storage bin. Since the process controller can be located at any remote location, this discharge rate can be monitored anywhere. | ||||||
| 249 | Fluid level monitor with at least partially submersible buoyant element | US09939513 | 2001-08-24 | US06508120B2 | 2003-01-21 | David Yekutiely; Barak Yekutiely |
| This invention discloses a fluid level monitor including a buoyant element suspended from a filament wound on a spool, a load sensor that senses a tensile force in the filament and a rotation sensor that senses the rotation of the spool around which the filament is wound, wherein the buoyant element is adapted to be initially at least partially submerged at an equilibrium position at an initial level of a fluid, thereby creating a nominal tensile force in the filament, wherein a change in the level of the fluid changes the tensile force in the filament, a positive change in the tensile force corresponding to a downward movement of the buoyant element and a negative change in the tensile force corresponding to an upward movement of the buoyant element, wherein the rotation of the spool corresponds to an amount of distance traveled by the buoyant element. | ||||||
| 250 | Water-monitoring apparatus capable of auto-tracing water level and non-contact signal relay for the same | US09960567 | 2001-09-21 | US06429778B1 | 2002-08-06 | Hsu-Chen Chuang |
| A water-monitoring apparatus includes a frame installed by water. A reel is mounted on the frame. A cable including lower and upper ends is wound on the reel. A buoy is connected with the cable. At least one sensor is used to detect a water quality parameter and to produce a signal representative of the water quality parameter. The at least one sensor is carried via the buoy and electrically connected with the lower end of the cable. The reel can be rotated to adjust a length of the cable extending from the reel so that the at least one sensor can always be immersed in the water. A signal relay includes a first block electrically connected with the at least one sensor and a second block electrically connected with a monitoring station wherein the first and second blocks are connected with each other in a non-contact electric manner. | ||||||
| 251 | Water-monitoring apparatus capable of auto-tracing water level and non-contact signal relay for the same | US09960567 | 2001-09-21 | US20020038571A1 | 2002-04-04 | Hsu-Chen Chuang |
| A water-monitoring apparatus includes a frame installed by water. A reel is mounted on the frame. A cable including lower and upper ends is wound on the reel. A buoy is connected with the cable. At least one sensor is used to detect a water quality parameter and to produce a signal representative of the water quality parameter. The at least one sensor is carried via the buoy and electrically connected with the lower end of the cable. The reel can be rotated to adjust a length of the cable extending from the reel so that the at least one sensor can always be immersed in the water. A signal relay includes a first block electrically connected with the at least one sensor and a second block electrically connected with a monitoring station wherein the first and second blocks are connected with each other in a non-contact electric manner. | ||||||
| 252 | Lightning resistant hydrological pulley | US330414 | 1999-06-11 | US6142450A | 2000-11-07 | Gotthard L. Hagstrom |
| A lightning resistant hydrological pulley comprising an insulator between a pulley body and an axle insert. The insulator is made of electrically non-conductive material, thereby denying lightning surges an electrical path from the pulley body to an axle disposed within the axle insert. Set screws angularly immobilize the pulley body relative to the insulator, and the insulator relative to the axle insert and relative to an axle disposed within the axle insert. In the preferred embodiment, the insulator is made of synthetic material such as white Delrin, and the pulley body and the axle insert are made of brass. | ||||||
| 253 | Water level monitoring float system | US22141 | 1998-02-11 | US6138509A | 2000-10-31 | Ed Jaworski; Dennis Zlipko |
| The invention provides an improved float and float system for use in the monitoring of fluid levels, particularly in small diameter wells by way of a cable and float system. The float system includes a number of centralizers which hold the float cable near the center of the well casing and thus reduce the friction of the cable on the casing walls. The addition of weights on the float cable, either or both below the float and between the float and the top of the well casing, can improve the accuracy and operation of the system even further. A truncated cone-shaped float is provided, with a number of fins displaced evenly around the circumference of the float. | ||||||
| 254 | Liquid level indicating method and system | US987532 | 1997-12-09 | US6003366A | 1999-12-21 | Hugh R. McGookin |
| A liquid level indicating system includes a plastic link chain suspended in a container extending between a high level position and a low level position of a liquid in the container. A weighing device is positioned above the high level position of the liquid for measuring the weight of the chain. An attachment device secures a lower portion of the chain to the bottom of the container with sufficient slack so as not to affect the operation of the weighing device. | ||||||
| 255 | Tank level gauge of driven sensor type | US636276 | 1996-04-29 | US5806363A | 1998-09-15 | Danny James Khoi; Pierre Gonzalez; Denis Buffenoir |
| A level gauge for a tank of a driven sensor type includes a drum around which is wound a thread on the end of which is suspended a driven level sensor. A reversible servomotor drives the drum with the drum being driveable in reverse directions. The rotation of the drum is recorded and a variation in the force of the thread is detected. The force is directly related to the relative position of the sensor with respect to the level being measured. The detector for detecting the variation in the force in the thread includes an element rotatably mounted about a horizontal axis, with an oscillation of the element being limited by a damping arrangement, with movement of the element enabling the force exerted on the thread to be measured. | ||||||
| 256 | Device, system and method for measuring an interface between two fluids | US98305 | 1993-11-24 | US5444383A | 1995-08-22 | Joram Agar; Itzack Tavori; Jacob Inbar |
| For measuring an interface between two fluids, a device (10, 75, 90) havingn electrical circuit comprising transmitting means, a detector, a first antenna (14, 18, 78, 82, 92) and a second electrically grounded antenna (15, 18, 79, 83, 93), the transmitting means being arranged to transmit electrical impulses between the first and second antennas through one of the two fluids so as to be absorbed thereby, and the detector being arranged to detect a change in either an impedance or a rate of absorption of energy which occurs at the interface. The device includes a housing (11, 91) for placing in the fluids so as to contact the interface along a periphery of the housing towards a first end thereof, the first antenna (14, 18, 78, 82, 92) projects from the housing at said periphery, and the electrical circuit includes a coupling means (28) for coupling thereto a remote monitoring means whereby the interface may be measured remotely. Also disclosed are several preferred systems and methods employing such a device. | ||||||
| 257 | Apparatus, method and system for monitoring fluid | US17665 | 1993-02-12 | US5319964A | 1994-06-14 | Stanley V. Stephenson; Ronald E. Dant; Robert L. Toellner; Edward P. Arnold; Thuong Van Le; Leslie N. Berryman |
| Fluid level in a container is determined using a single pressure transducer connected to a portable body. The body contains a computer having a memory in which fluid level-to-fluid volume conversion data are stored for different shapes of containers so that fluid volume can be readily obtained for the shape of the respective container once fluid level is determined. These features allow a single monitoring apparatus to be used for monitoring different types of containers. The apparatus preferably includes a radio so that multiple apparatus can communicate in a system with a central remote operator interface device. Fluid level is determined by dividing a pressure reading from the bottom of the fluid by a fluid density determined from two prior pressure reading taken across a known distance (density equals the difference between the two readings divided by the distance). | ||||||
| 258 | Apparatus, method and system for monitoring fluid | US17666 | 1993-02-12 | US5272920A | 1993-12-28 | Stanley V. Stephenson; Ronald E. Dant; Robert L. Toellner; Edward P. Arnold; Thuong Van Le; Leslie N. Berryman |
| Fluid level in a container is determined using a single pressure transducer connected to a portable body. The body contains a computer having a memory in which fluid level-to-fluid volume conversion data are stored for different shapes of containers so that fluid volume can be readily obtained for the shape of the respective container once fluid level is determined. These features allow a single monitoring apparatus to be used for monitoring different types of containers. The apparatus preferably includes a radio so that multiple apparatus can communicate in a system with a central remote operator interface device. Fluid level is determined by dividing a pressure reading from the bottom of the fluid by a fluid density determined from two prior pressure reading taken across a known distance (density equals the difference between the two readings divided by the distance). | ||||||
| 259 | Level probe for a shaft furnace | US810544 | 1991-12-19 | US5166589A | 1992-11-24 | Emile Breden; Emile Lonardi; Edgar Kraemer |
| A probe includes a probe foot which is suspended on a cable or a chain attached to a winding drum mounted in a sealed casing above the furnace and which communicates with the interior of the latter via a vertical sleeve passing through the upper wall of the furnace, an electric motor associated with a reducer for actuating the winding drum, and a device for detecting the unwinding and winding up of the winding drum in order to control the speed and torque of the motor. The motor is a servomotor, the speed and torque of which are controlled automatically as a function of the detection device by comparison of the actual speed of the motor with data of desired values dependent on the position of the probe foot. | ||||||
| 260 | Apparatus for measuring the level of the interface between a first and a second medium in a reservoir | US379091 | 1989-07-13 | US5043912A | 1991-08-27 | Henk J. W. Reus |
| An apparatus for measuring the level of the interface between two different media in a reservoir comprises a vibratory element adapted to contact both media on all sides, and an amplifier circuit which together with the vibratory element forms an oscillator circuit in which the vibratory element is the frequency determining part. The vibratory element makes flexural vibrations at a resonance frequency. The apparatus further comprises a processing unit for measuring the momentary resonance frequency of the vibratory element and for deriving the level of the interface with respect to the vibratory element from said momentary frequency by means of the predetermined dependency of the resonance frequency on the depth of immersion of the vibratory element in the lower medium. The vibratory element is made as a plate-like element with a very small size with respect to the height of the reservoir. Further the vibratory element is connected to a positioning device controlled by the processing unit, and this positioning device is adapted to move the vibratory element along the whole height of the reservoir and to provide a position signal to the processing unit representing the height position of the vibratory element in the reservoir. | ||||||
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