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| Number | Title | Issue Date |
| 8127592 | Particulate matter detection sensor A particulate matter sensor includes a particulate matter detection filter having a volumetric soot storage capacity smaller than the volumetric soot storage capacity of a diesel particulate filter, and a differential pressure measuring part measuring a differential... | 03/06/2012 |
| 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 |
| 7222517 | Method for determining the characteristic properties of soot particles A method for determining the characteristic properties of soot particles originating from combustion processes utilizes the determination of the blackening of a filter paper. In order to allow for achieving a quick and relatively accurate determination of the partic... | 05/29/2007 |
| 7168325 | Gas pressure sensor A gas pressure sensor 100 is disclosed as including a housing 10 to which a pressure is adapted to be introduced, a stem 20 communicating with the housing to admit the pressure thereto and having a diaphragm 22 deformable in response to t... | 01/30/2007 |
| 7152457 | Impactor a frame part for an impactor a part to be used in an impactor and a method for processing elements belonging to the impactor An impactor, a frame part for an impactor, a part to be used in an impactor, and a method for processing elements belonging to the impactor. Different elements belonging to different stages of the impactor are coupled to each other with a connecting element in such ... | 12/26/2006 |
| 7062953 | Sampling tube-type smoke detector In a sampling tube-type smoke detector equipped with a smoke detection device detects smoke particles contained in the air suctioned from a monitored area through a sampling tube by an aspirator positioned in the downstream. The smoke detection device the sampling t... | 06/20/2006 |
| 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 |
| 6965240 | Apparatus and methods for analyzing particles using light-scattering sensors and ionization sensors Apparatus and methods are disclosed for analyzing particles, such as coarse particulates, fine particulates (e.g., diesel particulate matter), and combustion aerosols, using light-scattering sensors and/or ionization-type sensors. In one disclosed embodiment, a part... | 11/15/2005 |
| 6647758 | Method and apparatus for verifying integrity of cascade impactors An impactor assembly comprises a base for supporting a plurality of cups that form impactor plates, and a nozzle above each of the cups through which a flow passes for classification. The cover is removable, and a test cover can be put into position for m... | 11/18/2003 |
| 6401520 | Dust detector tube A personal sampling method and apparatus for real time respirable dust dosimetry for dust exposure assessment is provided to aid in assuring the respiratory health of workers. An embodiment uses a low flow-rate gas sampling pump for differential pressure ... | 06/11/2002 |
| 6107923 | Method and device for detecting the state of an air filter in a heating and/or air-conditioning installation of an automobile The invention provides a method and device for detecting the state of an air filter in a ventilation system of the passenger compartment of an automobile vehicle. The installation is put into operation in a given mode and a parameter of an air flow emitte... | 08/22/2000 |
| 5571945 | Method and apparatus to measure particulate matter in gas Apparatus for measuring the amount of particulate matter in a gas having a gas supply, a first particulate matter collector downstream of the gas supply and in gaseous communication with the gas supply, and a second particulate matter collector downstream... | 11/05/1996 |
| 4550591 | Apparatus for monitoring particulate matter An apparatus for monitoring particulate matter in the fluid comprises a filter means (28) through which fluid is arranged to flow. A pressure sensing means (46) senses the fluid pressure difference across the filter means and produces a pressure signal in... | 11/05/1985 |
| 4420966 | Method for determining solids or liquids in vapor A method for measuring changes in the amount of solids or liquids entrained in vapor in a container includes introducing a first vapor purge stream into a first sensor, introducing a second vapor purge stream into a second sensor located at a different le... | 12/20/1983 |
| 4389880 | Rapidly erodible sonde An erodible sonde for detecting sand in the gas conveyed through a pipe. Such a sonde is constituted by a thin aluminium tube, one end of which communicates with a device for measuring the pressure outside the pipe and the other end of which is closed, th... | 06/28/1983 |
| 4117715 | Apparatus for measuring charge on, and density of, airborne particulates A simple, inexpensive, hand-held and operated apparatus for providing a substantially immediate indication of the density of, and charge on, airborne particulate contaminants of a predetermined size or within a predetermined size range includes a first fi... | 10/03/1978 |
| 4006349 | Monitoring apparatus for a pneumatic conveyor system A monitoring system measures the flow of solids in a pneumatic conveying system having a conduit with an air inlet, a solids inlet, and a mixture outlet. A pressure transducer responds to pressure in the conduit to produce a pressure-representing signal. ... | 02/01/1977 |
| 3965748 | Apparatus for automatically measuring particulate emissions in gas flow A stack sampler for collecting particulate samplings in gaseous emissions includes means for automatically matching the volume rate of flow through the sampler to the flow in the stack. Pressure drops and temperatures in the stack and in the sampler are c... | 06/29/1976 |
| 3956940 | Sampling of fluid A sampler including a pump unit and a holder for an adsorbent for the pollutants both carried by the personnel while in the area under observation, typically during an 8-hour working period. The pump unit includes a motor-driven pump which draws the air b... | 05/18/1976 |
