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| Number | Title | Issue Date |
| 7832252 | Precise droplet injection for calibrating a gas chromatography instrument A method and apparatus for calibrating a gas chromatography instrument by forcefully shooting a measured droplet which securely passes through a confined passageway without direct intervention of human hands into the entry throat of the instrument so as to avoid con... | 11/16/2010 |
| 7757539 | Modulated pressure wave vapor generator The current invention provides a modulated pressure wave vapor generator suitable for use outside of the laboratory. The vapor generator of the current invention produces a controlled analyte vapor sample without using bulk movement of gas. Additionally, the current... | 07/20/2010 |
| 7387038 | Wide range constant concentration particle generating system A particle generating system includes an aerosol generator, an ejector diluter, and an aerosol diluter. The ejector diluter receives the generated aerosol and dilutes the aerosol to an expected raw concentration. The aerosol diluter further dilutes the aerosol to a ... | 06/17/2008 |
| 7290588 | Protective gas device for pressure die-casting machines A protective gas device for the melting furnaces of pressure die-casting machines, in particular for processing a magnesium melt. A collection container of a mixing device for the components of a protective gas, which covers the melt to prevent oxidation or other da... | 11/06/2007 |
| 7281404 | Apparatus and method for testing gas detection instruments An apparatus for providing a test gas to a gas monitoring instrument having a window for admitting gas to a gas sensor therein, is formed from a mechanical adaptor open at a portion thereof and having walls constructed and arranged such that the mechanical adaptor r... | 10/16/2007 |
| 7275411 | Apparatus and method for testing gas detection instruments An apparatus for providing a test gas to a gas monitoring instrument having a window for admitting gas to a gas sensor therein, is formed from a mechanical adaptor open at a portion thereof and having walls adapted to the gas monitoring instrument such that the mech... | 10/02/2007 |
| 7269991 | Permeation calibrator An apparatus, method, and system for ensuring a more accurate and precise calibration of gas or liquid analyzers using gas emitting permeation tubes for the production of calibration samples. The permeation devices are placed in a temperature-controlled housing to e... | 09/18/2007 |
| 7260981 | Method for leak testing and leak testing apparatus For leak testing closed containers (9) which are filled with a filling product containing at least one liquid component the container is introduced in a test cavity (1) which is evacuated at least down to vapor pressure of that liquid component. The pr... | 08/28/2007 |
| 7225661 | Gas supply adapter A single-piece adapter (10) is disclosed for supplying gas to a gas detector (32) that contains at least one gas sensor (34) and that has a gas inlet (30) for allowing gas at the inlet to come into contact with the at least one sensor ( | 06/05/2007 |
| 7197948 | Method of dosing liquid volumes and apparatus for the execution of the method Method for dosing liquid volumes, wherein a sample pickup portion with a pickup volume, the boundary of which is perforated with a liquid passage guiding to the outside and a gas passage, is dipped into a liquid with the liquid passage, a negative pressure is sudden... | 04/03/2007 |
| 7196632 | Gas safety detector having self-detection function A gas safety detector having a self-detection function includes a base board, an electromagnet, a gas device, a magnetically attractive plate, and a sensor. Thus, the gas safety detector has a self-detection function. In addition, when the electromagnet stops operat... | 03/27/2007 |
| 7168287 | Reference leakage device for leak sniffer detector A reference leakage device for a leak sniffer detector that is equipped with a sniffing tip and a control unit. The reference leakage device includes a gas reservoir and a constriction wherefrom there is released a specific amount of test gas, at least during calibr... | 01/30/2007 |
| 7167098 | Testing equipment for a fire alarm The present invention relates to testing equipment 20 for a fire alarm 1. It includes a testing pole (21), a range spacer (23) connected to the testing pole (21), and a reflective means and/or scattering means situated in the insid... | 01/23/2007 |
| 7156481 | Ink jet recording apparatus An ink jet recording apparatus, which performs printing by ink ejection, includes a pressure chamber in which ink liquid is filled; a nozzle hole (116) which is formed so as to communicate with the pressure chamber; a piezoelectric element (113) which ... | 01/02/2007 |
| 7146841 | Gas sensor calibration system An apparatus is described for calibrating at least one sensor within a gas detector (22), which detector has a gas inlet in fluid communication with the or each sensor, the apparatus comprising a housing (10) that contains: a) a surface (24) for... | 12/12/2006 |
| 7100839 | Method of servicing companies associated with a spray device operating under guidelines of a regulatory body A method for servicing companies associated with a spray device operating under guidelines of a regulatory body includes capturing in vitro actuation data associated with operation of the spray device and distributing the data to a company associated with an aspect ... | 09/05/2006 |
| 7080655 | Regulator for low concentration corrosive and reactive gases A filter-less regulator is implemented for use in fluid flow systems that process low concentration reactive gases. The regulator includes an inlet, an outlet and a fluid flow path defined between the inlet and outlet by internal surfaces of the housing. The regulat... | 07/25/2006 |
| 7063097 | In-situ gas blending and dilution system for delivery of dilute gas at a predetermined concentration Apparatus and method for delivery of dilute active fluid, e.g., to a downstream active fluid-consuming process unit of a semiconductor manufacturing plant. The delivery system includes an active fluid source, a diluent fluid source, a fluid flow metering device for ... | 06/20/2006 |
| 7028533 | Flow rate measuring method and flowmeter, flow rate measuring section package used for them and flow rate measuring unit using them, and piping leakage inspection device using flowmeter Measurements are obtained by a computing unit based on an output Vh from an indirectly-heated constant-temperature controlling flow rate measuring section (16) and an output Vout from a two-constant-point temperature difference detecting flow rate measuring s... | 04/18/2006 |
| 7025870 | Method for analyzing the oxygen concentration of a gas A method for analyzing the oxygen concentration of a gas with an oxygen concentration analyzer of such a type that a probe sensor, when supplied with a gas to be analyzed, produces an electrical output which is proportional to the concentration of oxygen in the gas,... | 04/11/2006 |
| 7017386 | Self-testing and self-calibrating detector A self-testing and self-calibrating detector utilizing an internally produced reference gas. A detector that is sensitive to a target analyte as well as a reference gas can be utilized. A gas releasing material, such as a heated metal hydride, releases the reference... | 03/28/2006 |
| 6995678 | Gas safety detector having self-detection function A gas safety detector includes a base board, a step motor, a sleeve, a drive rod, a gas device, a link, and a sensor. Thus, the gas enters the sensor to perform a self test to identify if the sensor is operated at the normal state, so that the gas safety detector ha... | 02/07/2006 |
| 6918281 | Gas sensor calibration system The present invention provides a method of calibrating sensors within a gas detector (36) having a housing containing a gas inlet whereby gas can diffuse from the inlet to the sensors. The gas inlet in the housing is held against part (34) of the calib... | 07/19/2005 |
| 6761056 | Process and device for producing a gas mixture which contains at least one gaseous component, in particular for producing a calibration gas The invention relates to a process and a device for producing a gas mixture which contains at least one gaseous trace component, in particular for producing a calibration gas, in which a matrix gas stream is conveyed continuously with a predetermined quantitative fl... | 07/13/2004 |
| 6595040 | Test leak unit A test leak unit (1) includes a supply of test gas, preferably helium, and an element (14) for determining leakage rates. The aim of the invention is to create a simple, robust and easily refilled test leak unit, especially for detecting packaging leaks. ... | 07/22/2003 |
| 6513901 | Method and apparatus for determining drop volume from a drop ejection device A device for determining drop volume for a drop ejection device is disclosed. The drop ejection device has a drop ejector and a reference drop ejector that exhibits less drop volume variation than the drop ejector. The drop ejection device includes a sens... | 02/04/2003 |
| 6427516 | Leak detector A leak detector includes an off-center mounted metering pin cooperating with a single cross-hole in a poppet valve to accommodate adjustment of the flow rate past the metering pin by rotating the poppet valve about its longitudinal axis. A flow director, ... | 08/06/2002 |
| 6415642 | DLco calibration syringe apparatus A calibration apparatus for checking the accuracy of DLco testing machines includes a pair of syringes mounted side by side in a frame and joined by a valve controlled gas passageway to a coupling adapted to mate with the testing machine. The first syring... | 07/09/2002 |
| 6408674 | Pressure activated calibration system for chemical sensors A device for remotely calibrating leak sensors is disclosed. The leak sensor calibration device includes a reservoir for storing a fluid calibrant, a conduit in flow communication with the reservoir, an outlet nozzle, an air supply source, and a valve mec... | 06/25/2002 |
| 6314792 | Testing of fluid systems A method and apparatus for testing a component in a fluid system in which the component operates in response to flow of fluid in the system in the vicinity of the component. A closed loop is established for the flow of fluid in the part of the system incl... | 11/13/2001 |
| 6269678 | Leak detector A leak detector includes an off-center mounted metering pin cooperating with a single cross-hole in a poppet valve to accommodate adjustment of the flow rate past the metering pin by rotating the poppet valve about its longitudinal axis. A flow director, ... | 08/07/2001 |
| 6055840 | Method and apparatus for determining concentration of a gas A method for calibrating a gas measurement device which includes a gas sensing element having an electrical signal output dependent upon concentration of the gas being measured and a diffusion barrier to limit gas entry to the gas measurement device. The ... | 05/02/2000 |
| 6044688 | Device for ejecting a metered quantity of vaporized fluid A device for delivering a metered quantity of vaporized liquid material to the surrounding atmosphere is disclosed. The device includes a reservoir for storing the liquid material, and a conduit in flow communication with the reservoir, with a portion of ... | 04/04/2000 |
| 6000275 | Method for analyzing impurities in gas and its analyzer A method of analysis of an impurity in a gas is characterized in that an impurity gas in a sample gas is quantified by ionizing the sample gas, and measuring by a mass spectrometer 6 the intensity of cluster ions which are formed from a main component gas... | 12/14/1999 |
| 5970778 | Thermally activated calibration system for chemical sensors A device for remotely calibrating leak sensors. A supply of liquid analyte calibrant is stored in a reservoir, and is communicated to an outlet nozzle by a conduit having a throughbore. The conduit terminates in an outlet nozzle, and portion of the condui... | 10/26/1999 |
| 5966676 | Calibration-inability warning method in analyzing apparatus A calibration-inability warning method in an analyzing apparatus determines in advance when the analyzing apparatus approaches a calibration-inability condition prior to entering calibration inability condition. To do so, coefficient ranges are set, and a... | 10/12/1999 |
| 5883301 | Method and apparatus for calibrating a leak detector An automated calibration apparatus and method for calibrating a fluid piping system leak detector uses a calibrated leak device with an orifice that releases fluid at a constant calibrated leak rate. The calibrated leak device is connected to the fluid pi... | 03/16/1999 |
| 5789253 | Methods for rapid equalibration of dissolved gas composition An apparatus and method of equilibrating the dissolved gas composition of an aqueous fluid to reflect the predetermined gas composition contained in a gas equilibration reservoir. The equilibrated aqueous fluid can be used in a method of determining the c... | 08/04/1998 |
| 5777203 | Method and device for gas emission A method and a device for emitting small volumes of gas from a substance in condensed form to the surroundings at a controllable rate. The condensed substance is in a container which is in communication with the surroundings via a gas permeable membrane a... | 07/07/1998 |
| 5777202 | Reference solution container having improved gas retention A reference solution container for an analyzer for measuring gas and/or electrolyte levels in a fluid. The vessel includes a fluid container for holding a reference solution and a self-sealing fluid port for repeatedly accessing the reference solution in ... | 07/07/1998 |
