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Class 250/577 - Volume or level


Subclass of Class 250 - Radiant energy
Definition: Subject matter including structure associated with the photocell
No. of patents: 419
Last issue date: 07/19/2011


1                      
NumberTitleIssue Date
7982201System and method for detection of liquid level in a vessel
A system and method for identifying the levels of one or more liquids in a vessel using an optical imager and one or more appropriately positioned light sources and an optical imager for capturing digital images of the illuminated vessel. A laser line generator is p...
07/19/2011
7956341System and method of non-invasive continuous level sensing using a linear sensor array
Embodiments of the present invention provide a system and method for detecting the level of a fluid in a surgical cassette by projecting light from a linear light source into a wall of a cassette. Depending on the amount a light reflected or refracted in the cassett...
06/07/2011
7851775Gear-type drink-o-meter to monitor fluid consumption
An apparatus for monitoring the consumption of fluid by a user, particularly fluids being drank from a container. The apparatus may be used with wide variety of container types. The fluid monitoring unit uses a pair of gears in rotational engagement with each other ...
12/14/2010
7838859Fluid overfill probe with thermal stress prevention
A fluid overfill probe is resistant to failure caused by physical stresses resulting from thermal expansion of probe components. A fluid level detector is connected to circuit components that are mounted on a circuit board located in a housing of the probe. The circ...
11/23/2010
7786457Systems and methods of non-invasive level sensing for a surgical cassette
Embodiments of the present invention provide a system and method for detecting the level of a fluid in a surgical cassette by projecting light from a linear light source into a wall of a cassette. Depending on the amount a light reflected or refracted in the cassett...
08/31/2010
7663130System and method of determining fluid levels in containers including an infrared device for detecting a first value associated with an empty portion of a container
A system and method of determining fluid levels in containers is disclosed. In a particular embodiment, a first value of infrared energy associated with an empty portion of a container is detected and the container is scanned to detect a second value of infrared ene...
02/16/2010
7589340System for detecting a container or contents of the container
A system for detecting a container or contents of the container. The system includes a diffuser for retaining the container, where the container is configured to hold an active material therein and may include a wick extending therefrom. The system further includes ...
09/15/2009
7521703Automatic analyzer
In an automatic analyzer which includes a reaction container which contains reaction solution therein, a light source which emit light to be transmitted through the reaction solution, a spectral detector which measures the light transmitted through the reaction solu...
04/21/2009
7399985Optical non-contact sensor for detecting material level in a container
A detection system for determining material level in a container where the container has an opening and an optical window mounted to the opening. A sensor element is mounted to the container adjacent the window. The sensor element has an optical emitter and an optic...
07/15/2008
7388222High-temperature optical liquid level sensor
The invention provides an optical liquid level sensor used to determine the level of a liquid within a vessel. The sensor includes two adjacent elongated optical elements, such as optical fibers, which connect a first end, or “sensing end”, to a second end, or ...
06/17/2008
7370565Apparatus for mixing explosive materials and for filling of ordnance
Described herein is apparatus for the mixing of explosive materials utilising a static mixer (26) for combining pre-mix explosive material and hardener prior to introducing the combined mixture into any ordnance (38). ...
05/13/2008
7366244Method and system for antenna interference cancellation
A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ...
04/29/2008
7359803Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe
An apparatus 10,70 and method is provided that includes a spatial array of unsteady pressure sensors 15-18 placed at predetermined axial locations X1-XN disposed axially along a pipe 14 for measuring at least one par...
04/15/2008
7354190Two-stage mixing system, apparatus, and method
A two-stage mixing system, apparatus, and method produces a solution including a first substance and a second substance in a predetermined ratio by first mixing the first substance with a first liquid to produce a first solution and then mixing the first solution wi...
04/08/2008
7350910Liquid container and ink jet recording apparatus
A liquid container for accommodating liquid for use with an ink jet recording apparatus includes a light emitting portion; an electric contact for receiving a signal for actuating said light emitting portion from the ink jet recording apparatus; and a light guide po...
04/01/2008
7349806System and method for extracting optical properties from environmental parameters in water
A method for predicting water clarity at a plurality of water depths for a location including providing training data to a neural network, the training data representative of water measurements at the location, thereafter receiving inputs including temperature, sali...
03/25/2008
7338215Cable termination
An optical cable termination includes a termination body and a pressure test section. The pressure test section includes a body configured to be press fit, screwed or otherwise attached to an end of the termination body and at least one test port. The pressure test ...
03/04/2008
7339657Low-cost on-line and in-line spectral sensors based on solid-state source and detectors combinations for monitoring lubricants and functional fluids
A series of optical spectral sensors is based on a combination of solid-state sources (illumination) and detectors housed within an integrated package that includes the interfacing optics and acquisition and processing electronics. The focus is on low cost and the f...
03/04/2008
7329857Side-emitting fiber optic position sensor
A side-emitting fiber optic position sensor and method of determining an unknown position of an object by using the sensor. In one embodiment, a concentrated beam of light source illuminates the side of a side-emitting fiber optic at an unknown axial position along ...
02/12/2008
7323705Liquid level measurement
The present application relates to an apparatus and method for measuring liquid levels in small-volume wells. ...
01/29/2008
7310965Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus
The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger...
12/25/2007
7307739System and method for detecting dropping amount of liquid crystal
A system for determining the amount of LC that is dropped on a display panel is presented. The system can adjust the amount of the LC to be dropped based on a real-time feedback on the amount of LC that is currently being dropped. The amount of LC that is being drop...
12/11/2007
7304583Device for detecting a defined filling level of a medium in a container
An apparatus for detecting a predefined fill level of a medium in a container having a lid by means of a conductive measuring system, which has at least two measuring electrodes extending into the container. A measurement current flowing between the two measuring el...
12/04/2007
7290843Recording apparatus having a device for detecting the presence or absence of a liquid
A device for detecting the presence or absence of a liquid, which is installed on an ink-jet recording apparatus, is configured to determine the presence or absence of ink in the ink flow path by detecting the reflection of light from a light transmission portion by...
11/06/2007
7285793Coordinate tracking system, apparatus and method of use
A system enables indirect determination of a position vector (VR) of a point position (P). The system uses two fixed trackers (10 and 10′) whose absolute positions are known. A movable measuring device (20) provides a rigid rod (...
10/23/2007
7280204Multi-spectral detector and analysis system
A multi-spectral detection and analysis system detects and classifies a targeted sample. The system may include a light source that causes the targeted sample to luminesce. A light dispersion element disperses the luminescence to a photodetector in a photodetector a...
10/09/2007
7275357Cotton module program control using yield monitor signal
A control and method for a cotton module building program for an on-board cotton module builder of a cotton harvester, which utilizes a signal or output from a yield monitor as a factor in determining and varying cotton module building parameters, which can include ...
10/02/2007
7274032Document processor with optical sensor arrangement
An apparatus for document processing comprises an optical sensor including a light source, a light detector and an optical element. The optical sensor is adapted so that, during operation of the apparatus, at least a first portion of light from the source that enter...
09/25/2007
7259384Fluid level optical detector with float having opaque and transmissive portions
Systems and methods for fluid level detection are disclosed. In one embodiment, a sensor assembly includes at least one optical fiber adapted to at least one of transmit and receive an optical signal, and a moveable float member. The float member is adapted to move ...
08/21/2007
7259383Optical transducer for detecting liquid level
An optical transducer for determining the presence or absence of liquid or the like in a reservoir includes a housing with a hollow interior and an optical probe that extends through the housing. The optical probe has a central axis, a proximal end positioned in the...
08/21/2007
7252377Ink tank and ink jet printer
An ink tank of the foam type which is provided with a detected portion capable of exactly and surely detecting the amount of ink used by the printer or remaining in the ink tank. The ink tank includes a sub ink chamber that is diposed or formed between a main ink ch...
08/07/2007
7246717Fire resistant base tank for mounting a generator
An above-ground, double-walled, tank for holding combustible material and supporting a generator has an outer tank and an inner tank with structural baffles, all made from type 316 stainless steel. An interstitial space formed by the outer tank and inner tank is fil...
07/24/2007
7213457Solid state illuminator for bi-color ported water level gauges
A solid state illuminator and display are provided for bi-colored ported water level gauges suitable for use in high pressure steam drums or similar water/steam devices to facilitate making an accurate determination of water level in such devices. The illuminator in...
05/08/2007
7197926Solid state illuminator for bi-color ported water level gauges
A solid state illuminator and display means are provided for bi-coloured ported water level gauges suitable for use in high pressure steam drums or similar water/steam devices to facilitate making an accurate determination of water level in such a device. The illumi...
04/03/2007
7199388Liquid level detecting device
The present invention aims at attaining a liquid surface level detecting apparatus, which can be used in various detection targets and usage environments without selecting a detection target, can efficiently irradiate a light to a liquid surface level detecting unit...
04/03/2007
7196950Non-volatile semiconductor storage device performing ROM read operation upon power-on
A power-on reset circuit has a power-on level detecting circuit which detects a power voltage to output a power-on reset signal and a delay circuit which delays the power-on reset signal output by the power-on level detecting circuit. Two chip address specifying pad...
03/27/2007
7193233Variable area flow rate meter using optical sensing of float position in the duct
A flowmeter has a variable area, vertically-oriented duct through which flows fluid whose flow rate is to be determined. A float in the duct assumes a position in the duct that depends on the flow rate of fluid in the duct. A window is located at an end of the duct ...
03/20/2007
7188645Visual fuel system for an engine welder
A fueling assembly for a fuel tank positioned in an engine driven welder. The fueling assembly includes a filler tube, a fuel level monitor and a grommet. The filler tube has a bottom portion and a top portion. The bottom portion of the filler tube has a cross-secti...
03/13/2007
7180053Apparatus, a system and method for determining a position within a cylinder
An apparatus, a system and a method are provided for monitoring position of a machine element within a mechanical system and/or cleaning a machine element. A light source and sensor may be positioned within a cylinder. The sensor may detect the intensity of light wi...
02/20/2007
7172259Recording apparatus having a device for detecting the presence or absence of a liquid
A device for detecting the presence or absence of a liquid, which is installed on an ink-jet recording apparatus, is configured to determine the presence or absence of ink in the ink flow path by detecting the reflection of light from a light transmission portion by...
02/06/2007
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