Quotables
"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 8117898 | Method for sensing gas composition and pressure A method for sensing gas composition and gas pressure, based on the thermal constants of a variable electrical resistor, is presented. The method for sensing gas composition and pressure includes monitoring a variable electrical resistor whose dynamic thermal respon... | 02/21/2012 |
| 7793534 | Gas pressure sensor A selective gas sensor is for determining the presence of a test gas, for example, helium includes an evacuated housing, sealed by a selectively gas-permeable membrane. The membrane is part of a sight glass, whereby the glass pane is provided with a hole, sealed by ... | 09/14/2010 |
| 7303613 | Filter sensor and indicator for vacuum cleaners A pressure actuated electrical switch and indicator to indicate to a user that a filter vacuum cleaner requires cleaning or replacing. In a first embodiment, the pressure actuated electrical switch measures the pressure present between the filter media and the flow ... | 12/04/2007 |
| 7285147 | Air supply systems and pressure adjustment devices for use therewith An air supply system for a clean room with a critical machine. An intake duct connects the exterior of the clean room to a make-up air unit, and is configured to transport external air into the make-up air unit. A first air duct connects the make-up air unit to an a... | 10/23/2007 |
| 7257986 | Gas sensor with increased measuring sensitivity A gas sensor (1) with a detector element (2), which is specific to a gas to be measured and sends a measured signal that depends on the measured gas concentration, has increased measuring sensitivity for measurements in the concentration range from les... | 08/21/2007 |
| 7238238 | Gasification monitor, method for detecting mist, film forming method and film forming apparatus A deposition apparatus supplies a reactive gas obtained by vaporizing a liquid material at a vaporizer 30 into a chamber 10 via a processing-gas pipe 40 and forms a thin film on a semiconductor wafer W due to a thermal decomposition of the react... | 07/03/2007 |
| 7207224 | Wide-range combination vacuum gauge A combination vacuum gauge provides simultaneous absolute and differential pressure measurements over a wide range of pressures ranging from atmospheric pressures to ultrahigh vacuum by processing the readings from an absolute high vacuum gauge (e.g., an ionization ... | 04/24/2007 |
| 7204125 | Pressure activated sampling system Screening of items for the presence of contaminants, such as explosives residue, is accomplished by subjecting an item loaded into a pressure chamber to a pressure substantially in excess of atmospheric pressure conditions and rapidly decompressing the item to the a... | 04/17/2007 |
| 7073403 | Method and apparatus for the collection of samples A system for the collection of near real time confirmation samples is provided to quickly eliminate false positive alarms by confirming the presence or absence of a chemical agent when a monitor operating in near real time to detect the presence of that chemical age... | 07/11/2006 |
| 7032467 | Package biochemical hazard and contraband detector This apparatus and method allows collection concentrated sample of content in shipping packages without unsealing the package by forcing airflow via existing hidden gaps or, if necessary, creating one by a small incision. The air is injected into the hidden gaps by ... | 04/25/2006 |
| 7022165 | Tubular hydrogen permeable metal foil membrane and method of fabrication A tubular hydrogen permeable metal membrane and fabrication process comprises obtaining a metal alloy foil having two surfaces, coating the surfaces with a metal or metal alloy catalytic layer to produce a hydrogen permeable metal membrane, sizing the membrane into ... | 04/04/2006 |
| 6984252 | Method of and apparatus for collecting dust, development apparatus, and image formation apparatus A dust collection apparatus includes a container and a suction pump that sucks dust and transports it into the container. A filter is provided on a side surface of the container. This filter passes air but prevents passage of the dust in the container. A pressure de... | 01/10/2006 |
| 6964187 | Vacuum sensor An apparatus and method for measuring the vapor or gas content of a vacuum chamber (1) by a vapor sensor (21) located in the fore-line of a vacuum system is provide. The gas or vapor content is determined by first providing a zero condition for the sen... | 11/15/2005 |
| 6958087 | Gas separator fixing structure and gas separating device using the same The gas separator fixing structure of the present invention is characterized in that it is provided with a gas separator 10 having a gas separation membrane 30 formed on at least one surface of a tubular support 31 having a through hole 7 | 10/25/2005 |
| 6955710 | On-board oxygen production system for aircraft, in particular long-range aircraft Method and system on board an aircraft for the production of an oxygen-enriched gas stream from an oxygen/nitrogen gas mixture, particularly air, comprising at least one adsorber containing at least one adsorbent for adsorbing at least some of the nitrogen molecules... | 10/18/2005 |
| 6895801 | Pressure activated sampling system Screening of items for the presence of contaminants, such as explosives residue, is accomplished by subjecting an item loaded into a pressure chamber to a pressure substantially in excess of atmospheric pressure conditions and rapidly decompressing the item to the a... | 05/24/2005 |
| 6831465 | Electrical measurement means An electrical measurement device is described, with a measurement input, an integrated sensor, a measurement and evaluation circuit, and a measured value display, and several measured value outputs. The electrical measurement device enables not only one measured val... | 12/14/2004 |
| 6819253 | Method and apparatus for the collection of near real time confirmation samples A system for the collection of near real time confirmation samples is provided to quickly eliminate false positive alarms by confirming the presence or absence of a chemical agent when a monitor operating in near real time to detect the presence of that chemical age... | 11/16/2004 |
| 6736424 | Airbag system for a motor vehicle An airbag system for a motor vehicle has an airbag that is deployed upon inflation with a gas from a folded state into the vehicle interior. An inflation device supplies gas for inflating the airbag. A sensing device senses deployment of the airbag to the effect tha... | 05/18/2004 |
| 6568266 | Pressure housing for in-water pressure based systems The present invention relates to a pressure housing for in-water pressure based systems and to a method for improving the life of the transducers and electronics of underwater systems by maintaining a humidity-free and clean environment around them by avo... | 05/27/2003 |
| 6568248 | Method and apparatus for thermodynamic analysis of a mixture of fluids The invention relates to a method and to apparatus for thermodynamic analysis of a mixture of fluids, in which the volume of a sample of a given quantity of said mixture is caused to vary step by step and in monotonic manner, and the pressure of the sampl... | 05/27/2003 |
| 6542827 | Well tending method and apparatus A method and apparatus for monitoring, controlling, recording, and transmitting operational parameters of an aquifer test, municipal well, dewatering project, pump and treat remediation project, or similar activity is presented. Water from a water source,... | 04/01/2003 |
| 6408682 | Leak detection method for endoscopes In automated reprocessing system (B), a leak detection system (10) evaluates the integrity of an endoscope (A), having an internal passage (66). The leak detection system includes an interior chamber (42) which is connected to the internal passage by quic... | 06/25/2002 |
| 6397662 | Gas concentration meter and insulating glass assembly and method thereof The system includes an access assembly for communicating with the gas filled insulating units, flexible electrodes for insertion through the access assembly to the gas and for sensing the concentration of the gas, and a meter for measuring and displaying ... | 06/04/2002 |
| 6318149 | Method and device for determining the joule-thomson coefficient of a fluid The invention is a method for determining the Joule-Thomson coefficient of a fluid, expressing the temperature variation in relation to a pressure variation thereof. The fluid is injected at a determined injection temperature into a thin tube (8) (prefera... | 11/20/2001 |
| 6308574 | Measuring device to measure the pressure of an atmosphere A measuring device is proposed to measure the gas pressure of an atmosphere, whereby the measuring device is provided with a sensor to measure the pressure located in the interior of a housing which encloses the sensor. In addition a unit to control the m... | 10/30/2001 |
| 6190442 | Air filter gauge An air filter cleanness gauge is provided. The gauge in a preferred embodiment includes a transparent cover. The housing has a first opening for fluid communication with the atmosphere and a second opening having fluid communication with a fluid source ex... | 02/20/2001 |
| 6050953 | Device and method for measuring a spirogram A device and method for measuring critical portions of an individual's forced expiratory efforts. The device includes a series of preset negative pressure sensors attached to a sensor port located in a breathing tube of predetermined dimension. A patient ... | 04/18/2000 |
| 6031462 | Rate of rise detector for use with explosion detection suppression equipment A rate of rise detector assembly (16) for use with explosion suppression equipment (14,18). The detector assembly includes a pressure sensor or transducer (20) and a controller (22). The pressure transducer continuously measures the pressure in a protecte... | 02/29/2000 |
| 6006586 | Method of measuring gas concentration A method of measuring a gas concentration for measuring any one of the concentrations of NOx, NO2, NO, and O2 by using one or more sensor elements utilizing a metal oxide semiconductor as a sensing element is disclosed. In the method... | 12/28/1999 |
| 5980102 | Method for measuring physical characteristics in a pipeline without tapping A fluid-filled pipe is investigated by a non-intrusive procedure to determine whether the fluid is liquid or gaseous, whether it is flowing or static, the direction of flow if it is flowing, the approximate pressure if it is a gas, and the rate of flow if... | 11/09/1999 |
| 5869745 | Ultrasonic gas pressure measurement for inflators of vehicular airbag systems An inflator for an airbag system has a target mounted in the pressurized gas contained in the inflator. An ultrasonic transducer is mounted on an external surface of the inflator in alignment with the target. The transducer generates and receives reflecte... | 02/09/1999 |
| 5869749 | Micromachined integrated opto-flow gas/liquid sensor A micromachined integrated opto-fluidic or opto-acoustic sensor having a rapidly intensity-varying or pulsing light source, an interference filter, a gas cavity, which may or may not be an optical and/or acoustic resonator tuned to a particular wavelength... | 02/09/1999 |
| 5856175 | Device for detecting microorganisms A device and method for detecting microorganisms in a specimen by culturing the specimen in a sealable specimen container with a culture medium and detecting microorganisms in the specimen by measuring changes in pressure within the container caused by th... | 01/05/1999 |
| 5836302 | Breath monitor with audible signal correlated to incremental pressure change An audible waveform system is provided that senses a parameter relating to the ventilation of a patient. The system produces short bursts of sound of a predetermined frequency as the changes occur in that parameter based on certain increments of change. T... | 11/17/1998 |
| 5801296 | Process for automated measurement of ammonia content in a gas mixture A process for automated measurement of ammonia in a gas mixture containing ammonia gas and one or more water-insoluble gases includes providing a water reservoir adapted for supplying water therefrom through a first solenoid valve and providing a measurem... | 09/01/1998 |
| 5708190 | Gas concentration sensor A gas concentration sensor for use in a closed container having a constant volume and gas within the container, wherein the gas has a known pressure at a given temperature. The sensor includes a pressure sensing device disposed within the container, where... | 01/13/1998 |
| 5580440 | Air fuel ratio sensory A method and apparatus are disclosed for measuring atmospheric pressure in conjunction with an air-fuel ratio sensor of the type comprising a concentration cell with atmospheric air and exhaust electrodes on opposite sides of a solid-state electrolyte hav... | 12/03/1996 |
| 5469732 | Method and device for gas analysis Analyzing gas samples wherein the sample is passed into a measurement chamber via a molecular diffusion filter. The composition or pressure of the gas is changed with time as it moves through the filter and a pressure sensor within the measurement chamber... | 11/28/1995 |
| 5428985 | Gas leak detection apparatus and methods An improved gas leak detection apparatus is disclosed for detecting a leak in a gas containing vessel of constant volume which compensates for deviations in behavior of a contained gas from an ideal model. The apparatus incorporates a pressure transducer,... | 07/04/1995 |
