Class / Patent application number | Description | Number of patent applications / Date published |
073293000 | With illumination | 15 |
20090013780 | SINGLE LIGHT SOURCE UNIFORM PARALLEL LIGHT CURTAIN - A continuous high resolution fluid level monitoring system is provided by embodiments of the present invention. This continuous high resolution fluid level monitoring system includes a unique fluid level sensor having a point light source, parabolic reflector, sensor array, and detection, processing and control system. The point light source illumines a parabolic reflector wherein the point light source is located at the focus of the parabolic reflector. The parabolic reflector reflects light from the point light source to produce a parallel light curtain. This parallel light curtain is parallel to an axis of symmetry of the parabolic reflector. The parallel light curtain illumines a chamber such as a chamber in an ophthalmic surgical device used to contain surgical fluid. The sensor array coupled to the chamber detects the parallel light curtain illuminating the chamber. The sensor array provides an output to a detection/processing/control system in order to determine the fluid level within the chamber. This optical method of determining the surgical fluid levels may be advantageous in that it prevents physical contamination of the surgical fluids. | 01-15-2009 |
20090107234 | System and method for measuring liquid level by image - The present invention relates to a system and a method for measuring liquid level by image, and more particularly to a system and a method for measuring liquid level by image, which is capable of measuring a liquid level accurately and automatically by photographing a proximity of liquid surface where a staff gage contacts the liquid using an image capturing apparatus, such as a camera, being located apart from the liquid to be measured, and by analyzing the photographed footage. The system for measuring liquid level by image comprises: a staff gage installed in the liquid; an image capturing part provided with a distance from where the staff gage is installed and capturing an image by photographing a proximity of liquid surface where the staff gage is installed; and a level recognition part controlling a capture of the image, wherein the level recognition part receives the image captured by the image capturing part and determines the liquid level. | 04-30-2009 |
20090126482 | Breathing gas supply visual broadcast apparatus - A gas measurement apparatus can comprise a sensor and a processor, in an example. The sensor can measure a pressure condition of a gas tank, in an example. The processor can select at least one light source, the light source can be positioned or be of a distinct color to indicate a corresponding level of gas remaining in the tank when illuminated. The level of gas can be based on the measured pressure. Banks of high intensity LEDs can allow visually discernable colors at a significant distance underwater. A visual beacon mode can be included. An alphanumeric pressure readout mode can be included. A depth sensor can be included. | 05-21-2009 |
20100000315 | ELECTRO-OPTIC LIQUID LEVEL SENSING SYSTEM FOR AIRCRAFT BEVERAGE BREWING - The electro-optic liquid level sensing system detects a level of liquid in a container having an upper opening, such as for a server container of a beverage maker for a transport system, such as for aircraft, trains, trucks, buses and the like. A support housing mates with the upper opening of the container, and a primary liquid level sensor is mounted in the support housing for non-intrusively measuring the liquid level. A secondary liquid level sensor may be mounted in the support housing to sense a predetermined liquid level to prevent accidental overflows. Protective lenses may be placed in front of the primary liquid level sensor. | 01-07-2010 |
20100269584 | ILLUMINATED SIGHT GLASS - A sight assembly may include a body portion configured to couple between a first fluid transport segment and a second fluid transport segment. The body portion may define an aperture configured for fluid flow through an interior of the body portion. The sight assembly may also include a light source disposed within the body portion. The light source may be configured to provide illumination of the interior of the sight assembly. The light source may be disposed within the body portion approximately between an outer edge of the body portion forming the aperture and an external surface of the body portion. | 10-28-2010 |
20100281972 | METHOD AND DEVICE FOR THE OPTICAL MEASUREMENT OF STATE VARIABLES AND THE LEVEL IN A CONTAINER FOR LIQUEFIED GASES, AND DEVICE THEREFOR - A method and a device for optically determining state variables inside a container ( | 11-11-2010 |
20110056290 | SYSTEM 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 positioned oppositely from the imager and oriented to project a laser line through the vessel so that it may be imaged by the imager. A second light source, such as an LED, may be positioned above or below the vessel and oriented to project light downwardly or upwardly through the vessel and its contents. Captured images of the vessel are then processed by a programmable device, such as a microcontroller, to determine the levels of materials in the vessel based on the optical characteristics revealed in the captured image. | 03-10-2011 |
20120167677 | BI-FUEL AND DUAL-FUEL AUTOMOTIVE COMBUSTIBLE GAS DETECTION APPARATUS AND METHOD - An apparatus and method are disclosed for detecting a combustible fuel leakage into the cabin of a bi-fuel or dual-fuel vehicle. The apparatus comprises a box affixed inside the cabin of a bi-fuel vehicle which alerts a driver to the presence of a combustible fuel inside the cabin using an audible alarm and flashing lights, and which then either disables the vehicle or switches the fuel powering the vehicle's engine to gasoline. Certain embodiments of the present invention include substitute means of generating and transmitting alerts to drivers, as well as of manipulating vehicle function. | 07-05-2012 |
20120180564 | LIQUID CONTAINER AND INCLINATION DETECTOR INCLUDING THE SAME - A liquid container for use in an inclination detector includes a container body containing liquid forming a free surface and having a circumferential wall in a spherical form, in which the circumferential wall is formed so that a center of the circumferential wall and a center of the free surface coincide with each other. | 07-19-2012 |
20130111988 | Water Well Gauge - The present invention is a well gauge used to indicate the relative depth of water inside a shallow well. Specifically, the present invention is water well gauge with a calibrated pipe, which visually displays various quantities of water within the well. The calibrated pipe or the floating shaft of the present invention is to be floated perpendicularly to water surface within the well. The shaft is supported by a group of buoys, which floats in line with the water in the well. The buoys are positioned radially around and perpendicularly to the shaft. The present invention further comprises a collar which helps position the shaft vertically and perpendicularly to the water level. The calibrated pipe of the present invention can be read in the absence of light due to an attachment of a solar light-emitting diode (LED). With the present invention installed, water user can regulate water more effectively. | 05-09-2013 |
20130233071 | Coverslipping Machine Having An Optical Limit Fill Level Measuring Device For A Liquid - The present invention relates to a coverslipping machine ( | 09-12-2013 |
20130255374 | METHOD AND APPARATUS FOR MEASURING LIQUID LEVEL OF CELL CULTURE SOLUTION - A method of measuring a liquid level of a cell culture solution stored in a cell vessel, includes: irradiating the cell culture solution with at least two kinds of light beams including a first light beam having a first wavelength and a second light beam having a second wavelength; measuring a first absorbance of the cell culture solution with respect to the first light beam, and a second absorbance of the cell culture solution with respect to the second light beam; and determining a liquid level of the cell culture solution based on the first absorbance and the second absorbance. | 10-03-2013 |
20150033845 | DETECTOR FOR DETECTING A CHANGE IN A FLUID LEVEL AND GENERATING A DIGITAL SIGNAL - A detector for detecting a change in a fluid level and generating a digital signal uses a light source and a photodetector mounted diametrically on a tube in a predetermined location where a change in fluid level is to be detected. The circuit provides two stable output states or levels, one which corresponds to fluid not being in the tube between the light source such as an LED light and the photodetector and the other level when fluid is in the tube. In a particular application, the invention is utilized to monitor fluid level in a predetermined location of a manometer to shut off a radon remedial system and provide audio/and or visual alarms when there is a fluid level change which indicates that the radon remedial system is not operating effectively. | 02-05-2015 |
20150135828 | SYSTEM FOR MEASURING FLUID LEVEL - A system for measuring fluid level is provided. The system includes a dipstick configured to be received in a fluid reservoir and having a photoluminescent portion. The system also includes a light source operable to emit a first light to excite the photoluminescent portion. A fluid level is determined based on a degree of illumination of the photoluminescent portion when the dipstick is removed from the reservoir and the photoluminescent portion is exposed to the first light. | 05-21-2015 |
20160109278 | Drum tank gauge device - A drum tank gauge device is disclosed in which the device comprises a housing having a level indication display, an audible alarm, and a visual alarm, a level sensor shaft having a capacitance sensor positioned at an end which is inserted into a drum, and a threaded cap for securing the housing and the level sensor shaft in place. | 04-21-2016 |