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| Number | Title | Issue Date |
| 8097067 | Runtime sensor for small forced air handling units Herein are disclosed devices and methods that can be used to provide an indication of the need to change a filter in a small forced air handling unit, based on the actual operating time (runtime) of the unit. The methods rely on the use of at least one vibration sen... | 01/17/2012 |
| 7909910 | Vacuum line clean-out separator system A vacuum clean-out system including a separator chamber and associated collection chamber for removing liquid material and debris from a vacuum output and providing a vacuum return line free of contaminants. A vacuum exhaust line is coupled to a cyclonic separator c... | 03/22/2011 |
| 7806961 | Control interface for a variable speed fan device A variable speed fan device includes a housing, a motor, a fan blade, a controller, and a first plurality of discrete light sources. The motor is maintained by the housing and the fan blade is connected to the motor. The controller is electronically coupled to the m... | 10/05/2010 |
| 7413594 | Electrical power disable in an air cleaner An air cleaner is provided according to an embodiment of the invention. The air cleaner includes a power supply, an electrostatic precipitator cell, and a door. The door closes the electrostatic precipitator cell inside the air cleaner. The air cleaner further inclu... | 08/19/2008 |
| 7399337 | Continuous air monitor filter changeout apparatus An apparatus and corresponding method for automatically changing out a filter cartridge in a continuous air monitor. The apparatus includes: a first container sized to hold filter cartridge replacements; a second container sized to hold used filter cartridges; a tra... | 07/15/2008 |
| 7351274 | Air filtration system control An intense field dielectric air filtration system associated with an air conditioning unit includes a microprocessor based control system which may be connected to the thermostat of the air conditioning unit to energize the air filtration system in response to a cal... | 04/01/2008 |
| 7320205 | Method for manufacturing filter canisters and tracking quality assurance An assembly line for manufacturing filter canisters is disclosed. The method for assembling filter canisters provides a unique serial number for each canister and a database that associates the component lot numbers, activated charcoal weight, and quality assurance ... | 01/22/2008 |
| 7285149 | Oil separator for vehicle air system An oil separator for use in a vehicle air system includes a recycling valve for removing coalesced oil. The recycling valve may include a piston movable in a cylinder in response to a control air pressure to open the recycling valve and thus drain coalesced oil from... | 10/23/2007 |
| 7261762 | Technique for detecting and predicting air filter condition A method and system for detecting and predicting air filter condition for an air handling system operates by determining a system resistance to air flow. The system resistance is utilized to determine a detection statistic indicative of current filter condition and ... | 08/28/2007 |
| 7258711 | High volume liquid waste collection and disposal system A system for collecting and disposing of liquid medical waste includes a fluid collection cart and a draining and cleaning station. The fluid collection cart includes a pair of containers, each of which includes a draining port and a cap. Each cap includes an outer ... | 08/21/2007 |
| 7156900 | Adsorber station and the use thereof The invention relates to an adsorber station with a first adsorber (A) and a second adsorber (B). A first closed loop pipeline (1) is connected to the adsorbers (A, B) and is provided with product gas feed line valves (4A, 4B) and regeneration g... | 01/02/2007 |
| 7156897 | Anti-infection and toxin elimination device The invention provides an apparatus for removing airborne pathogens and toxic substances from a surface of an article or a volume of air, comprising: a main processing chamber having a door for ingress to and egress from the main processing chamber, at least two hig... | 01/02/2007 |
| 7153347 | Device and method for controlling air cleaning operation of air conditioner The present invention provides device and method for controlling air cleaning operation, in which an air conditioner with an air cleaner is made to clean air effectively proper to different pollutants. The device includes a memory having a plurality of operation mod... | 12/26/2006 |
| 7101420 | Self cleaning air filtration machine and a method for using the same Self cleaning air filtration machine and a method for using same comprising; a filter with a motor driven belt or disk or counter rotating disks that are perforated, a spray bar, a recirculation pump and supply line, a wet tank, a ultrasonic transducer, ultraviolet ... | 09/05/2006 |
| 7097689 | Process and system for purifying gases A process and system for purifying an impure gas to produce a purified gas in a gas purification system and protecting the system from damage by a) passing a portion of a first gas stream into a reactor vessel, which exits as a second purified gas stream; b) combini... | 08/29/2006 |
| 7048775 | Device and method for monitoring the integrity of filtering installations The invention concerns a device and method for monitoring the integrity of filtering installations consisting of a filter housing (1) designed to perform integrity tests and for filtration, equipped with a plurality of filter elements (2, 3) and an ele... | 05/23/2006 |
| 7025802 | Filter control method, and filter controlled by the method A filter maintenance monitoring method and a filter maintained thereby are provided, by which re-use of the filter by wash is smoothly and efficiently promoted. The filter includes that loaned from a filter owner to a filter user. The filter used for a predetermined... | 04/11/2006 |
| 6984256 | System for collecting and filtering imaging by-products An operational state of a system for filtering imaging by-products from an airflow is monitored by comparing a measurement of the flow rate of the airflow to a threshold. Additionally, an operational state of a filtration element is monitored by accumulating a count... | 01/10/2006 |
| 6979361 | End of service life indicator for fluid filter An end of service life indicator (ESLI) device for a fluid filter is included on the filter and visually indicates when the life of the filter has expired. The ESLI indicates the depletion of the filter by changing the color density on a surface of the device to a c... | 12/27/2005 |
| 6858062 | Residual gas removing device and method thereof A residual gas removing device for a gas supply apparatus in a semiconductor fabricating facility, includes a low stress valve disposed between a mass flow controller and a chamber. The low stress valve alternately supplies or cuts off a gas from the mass flow contr... | 02/22/2005 |
| 6827760 | Method and system for providing a desired atmosphere within an enclosure A system and method for passive hypoxic training provides a person with a low oxygen (hypoxic) environment. Oxygen sensors automatically monitor and control oxygen levels to maintain the altitude desired. CO2 levels are monitored and CO2 is eli... | 12/07/2004 |
| 6814784 | Method of handling diesel particulate filter To provide a method of handling DPF capable of ensuring an expected value of a catching function of reclaimed DPF and eliminating waste of useful metals included by DPF, DPF(1) mounted to a diesel engine for catching PM included in exhaust is reclaimed until ... | 11/09/2004 |
| 6681648 | Meniscus membranes for separations Gas separation membranes, especially meniscus-shaped membranes for gas separations are disclosed together with the use of such meniscus-shaped membranes for applications such as thermal gas valves, pre-concentration of a gas stream, and selective pre-scre... | 01/27/2004 |
| 6660070 | Air purifier An air purifier includes a cabinet, an electrically driven fan, a replaceable filter element, and an air quality sensor. A display provides a visual indication of the air quality condition. A microprocessor is programmed to control the speed of the fan au... | 12/09/2003 |
| 6565624 | Altitude simulation method and system A system and method for passive hypoxic training provides a person with a low oxygen (hypoxic) environment. Oxygen sensors automatically monitor and control oxygen levels to maintain the altitude desired. CO2 levels are monitored and CO2 | 05/20/2003 |
| 6558444 | Fluid filters having a concealed machine-readable identification An intake filter (1) or a coalescing filter (4) of a compressor or vacuum pump, or an in-line filter has its identity recorded in a transponder (50, 54), memory chip or other device such as a magnetic or magnetostrictive strip. Interrogation e.g. by means... | 05/06/2003 |
| 6533839 | Visual differentiation of adsorbent-loaded media There is provided a three-dimensional adsorbent particle filter having a width, depth and at least one exposed outer face. The filter comprises darkly colored adsorbent particles having an L-value of 60 or less, preferably 20 or less providing a dark cont... | 03/18/2003 |
| 6491828 | Method and system to remotely monitor groundwater treatment A contaminated aqueous composition is withdrawn from a groundwater extraction well and the groundwater is treated in a pump and treat system to remove a contaminant. The treating of the aqueous composition is monitored from a location remote from the grou... | 12/10/2002 |
| 6391102 | Air filtration system with filter efficiency management A filtration system for trapping airborne contaminants as exemplified in evacuating smoke generated during a surgical procedure wherein operation efficiency thereof is automatically reported in relation to filter structure cumulative use time and cumulati... | 05/21/2002 |
| 6338823 | Gas chromatograph A gas chromatograph has a pressure sensor measuring a pressure in a sample introduction part, a flow control valve controlling carrier gas flow rate, a flow sensor measuring a flow rate of the carrier gas, a split flow path exhausting part of a carrier ga... | 01/15/2002 |
| 6273935 | Apparatus and method for trapping a toxic gas An apparatus and a method for trapping a toxic gas contained in an exhaust gas from a process chamber are disclosed. In the apparatus, two toxic gas traps are provided which are connected in series with a toxic gas sensor provided thereinbetween and in fl... | 08/14/2001 |
| 6237368 | Process for the regulating or controlling the NOx content of exhaust gases given off during the operating of glass melting furnaces with several burners run alternately A method for regulating or controlling the content of NOx in the exhaust gases of a glass-melting furnace having several burners operated in alternation, wherein both the beginning and the end of a combustion break (FP+, FP- | 05/29/2001 |
| 6224651 | Process from separation of a gas mixture by pressure swing adsorption and plant for its implementation A process for separation of a gas mixture by pressure swing adsorption, in which a pressure swing cycle comprising a sequence of steps which define adsorption, decompression/regeneration and pressure rise phases is employed for the or each adsorber. The c... | 05/01/2001 |
| 6168646 | Flow rate control of temperature control fluids Electronic equipment having a temperature control air flow passage. A length of filter material has a length portion extending across the upstream end of the flow passage, the filter material being movable longitudinally to replace the clogged length port... | 01/02/2001 |
| 6077330 | Air drying device for a pneumatic system Device and method for the regeneration of a drying agent in compressed air system. The wetting degree of the drying agent is estimated and recorded by a control unit. The control unit ensures that the drying agent is dehumidified as soon as the wetting de... | 06/20/2000 |
| 6042634 | Moisture extractor system for gas sampling A gas sampling apparatus includes a probe tube having a tip positionable in a stream of products of combustion and a sample dryer tube connected in fluid communication with an end of the probe tube opposite the tip. The sample dryer tube is received in a ... | 03/28/2000 |
| 6040777 | Device and process for indicating the exhaustion of a filter A device and a process for indicating the exhaustion of an adsorption filter to indicate a necessary filter change in time is provided. The monitoring device has a gas concentration-measuring device (8), a temperature-measuring device (9) for determining ... | 03/21/2000 |
| 6036757 | Portable room air purifier A portable air purifier including a housing defining an air inlet, an air outlet and an air flow passage extending therebetween; a filter mechanism disposed to filter air circulating through the flow passage; and a fan retained by the housing and activata... | 03/14/2000 |
| 6001151 | Filter assemblies A filter cell for use as all or as part of a filter panel includes an upper face 1 and a lower face 2. The upper face 1 and lower face 2 includes a set of parallel ribs 3 interconnected across one end by a further rib 4 orthogonal to the ribs 3. A mesh pa... | 12/14/1999 |
| 5944873 | Device for removing one or more undesirable or dangerous substances from a gas or vapor mixture and a gas mask comprising such a device The invention relates to a device for removing one or more undesirable or dangerous substances for the human race from a gas or vapour mixture, the device comprising: a predetermined amount of adsorbent for adsorbing the substances and an odourant for rel... | 08/31/1999 |