Class 210/349 - Pulsation dampener or gas trapping

Subclass of Class 210 - Liquid purification or separation
Definition: Apparatus provided with means dampening pulsations in liquid
No. of patents: 36
Last issue date: 01/27/2009

Number	Title	Issue Date
7481319	Filter device with deformable expansion element A filter device for filtering liquids having a filter element situated in a filter housing, with a deformable expansion element being provided in the filter housing so that when it is deformed, the volume of at least one section of the flow path of the liquid to be ...	01/27/2009
7014766	Self-venting filter element for a fuel filter arrangement A filter element (4; 4′) for a fuel filter arrangement has a first end disk (15; 15′) and a second end disk (16; 16′) between which extends a return line (18; 35), each opening into an outlet opening (24; 24′) on the outsid...	03/21/2006
6974369	Grinding water tank unit for eyeglass lens processing and eyeglass lens processing apparatus having the same An eyeglass lens processing apparatus for processing an eyeglass lens includes: a processing chamber inside which a lens grinding tool is disposed; a tank which stores grinding water; a drain hose connecting the processing chamber with the tank; a filter for elimina...	12/13/2005
6974538	Fuel filter for an internal combustion engine The invention relates to a fuel filter for an internal combustion engine, comprising a filter housing consisting especially of metal, and a filter element and a pressure-regulating valve located in said filter housing. The aim of the invention is to ensure that no n...	12/13/2005
6955764	Method and apparatus for preparing slurry for CMP apparatus The method and apparatus are provided for preparing a slurry for a CMP apparatus with which mixing accuracy for a slurry is improved and accurate measurement is automatically accomplished for H2O2 as a small amount of additive. A slurry prepara...	10/18/2005
6935460	Noise muffler for oxygen concentrator A noise muffler for the exhaust of waste gases from apparatus such as an oxygen concentrator, including a muffler core with an inlet to receive the waste gases and a plurality of bores in the core first to direct the waste gases through a filter material and a cap e...	08/30/2005
6773670	Blood filter having a sensor for active gas removal and methods of use Apparatus and methods for removing gas from a blood handling system. A filter apparatus for monitoring and removing gas is provided comprising of a gas removal/blood filter, a sensor to sense the presence of gas, and a valve operably coupled to the sensor to evacuat...	08/10/2004
6412645	Integrated filter and noise suppressor device for a water valve assembly and associated method for operating the same A water valve assembly includes a valve body having defined therein a central cavity. The water valve assembly also includes an integrated filter and noise suppressor device having a component body which has defined therein (i) a number of screen members,...	07/02/2002
6210577	Multiple cartridge housing assembly for the high purity filtration of liquids A multiple cartridge filter housing assembly for the high purity filtration of etching liquids, deionized water, slurries and other liquids used in the semiconductor, pharmaceutical and chemical industries. It comprises at least one upper and one lower ca...	04/03/2001
6143046	Filter cartridge having vibratable diaphragm A filter cartridge, including a tubular filter element which encloses an interior space on the downstream, clean air side, is joined in the axial direction on one side to a side-face lid, forming a seal. In order to reduce pressure peaks which occur in th...	11/07/2000
5389245	Vapor separating unit for a fuel system A vapor separating unit for a fuel system and having particular application to a fuel system for a marine engine. The vapor separating unit includes a closed tank having a fuel inlet through which fuel is fed to the tank by a diaphragm pump. The liquid le...	02/14/1995
5167921	Liquid and gas separation system A defoaming device for separating foam and bubbles from a liquid, such as blood, is disclosed. The device can be used in conjunction with a medical device, such as a membrane oxygenator, for separating air from blood while minimizing blood contact with th...	12/01/1992
5158676	Chromatography apparatus Chromatography systems with devices for compressing the column packing and/or for pulsation damping have incorporate an additional device in which a preselected minimum pressure, which is independent of the eluent pressure, is combined with a second press...	10/27/1992
5149428	Water filter with extended operational period A water filter with improved filtration efficiency and extended operational period. The filter includes a cassette member filled with filtration and activation agents, where a water path connecting a water inlet pipe and an open upper end of the cassette ...	09/22/1992
5089119	Filter for a vapor compression cycle device A filter for the lubricating oil and refrigerant within refrigerators, freezers and heat pumps is provided which does not interfere with the cooling cycle. The filter utilizes a housing with an orifice that functions as an outlet and an inlet for the tran...	02/18/1992
5084166	Fuel filtering device In a fuel filtering device for a fuel pump (6) which is arranged in a liquid fuel tank (1) of vehicles and feeds the liquid fuel to an engine, there is provided a screen (17, 23) which is for filtering the liquid fuel (2) and is constituted as a bag with ...	01/28/1992
5055187	Fuel filter incorporated in a fuel tank A known fuel filter is formed by a meshed body in a bag shape made of a synthetic resin while the meshed body is penetrated to form a fuel passage which is open toward the inside of the meshed body. The known fuel filter is attached to a portion adjacent ...	10/08/1991
5039486	Liquid and gas separation system A defoaming device for separating foam and bubbles from a liquid, such as blood, is disclosed. The device can be used in conjunction with a medical device, such as a membrane oxygenator, for separating air from blood while minimizing blood contact with th...	08/13/1991
5030345	Non-drip and full prime filter A filter for liquids is disclosed, which has a base with a central inlet, and an outlet, a central post with a filtering element surrounding and sealing therewith, a cannister enclosing the element and releasably sealed to the base, a passageway in the po...	07/09/1991
4975204	Method and apparatus for thickening fiber suspension The present invention relates to a method and apparatus for the continuous discharge of water from suspension, especially from fibrous pulp, whereby pulp is caused to thicken without having the water to be removed through a thick uncontrollably gathered f...	12/04/1990
4869823	Rotary drum type solid-liquid separation apparatus A solid-liquid separation apparatus wherein a solid-liquid mixture is introduced into a rotary filtration drum having filter cloth mounted thereon and is allowed to pass through the filter cloth to thereby separate the solids contained therein. The filter...	09/26/1989
4684444	Sorter for paper pulp suspensions including a damping chamber A sorter for paper pulp suspension including a rotationally symmetrical wire cage and a rotor supporting a plurality of vanes for rotating about the interior of the cage for moving suspension through the wire cage, the vanes being non-uniformly spaced. An...	08/04/1987
4556490	Arrangement for feeding of fuel An arrangement for feeding fuel, advantageously from a supply tank to an internal combustion engine, particularly of a power vehicle has a feed aggregate through which a fuel flows, and a structural element arranged in a fuel flow and including a filter p...	12/03/1985
4548713	Pulse damper A pulse damper for use in a liquid chromatographic solvent delivery system includes a cavity within a housing containing a compliant medium. The compliant medium being an elastomer. As a consequence, a solvent flow volume can be precisely formed and maint...	10/22/1985
4529512	Hydraulic reservoir A hydraulic system including a closed reservoir which is pressurized at a varying pressure that is responsive to a variable condition of the system. The system minimizes the air contained in the hydraulic fluid, causing air which has been released from th...	07/16/1985
4428834	Fluid filter with integral viscous damper The specification discloses an improved fluid filter (10) including a housing (12), cover (26), spring biased filter element (30) movable between normal and bypass positions, and viscous damper (50) for eliminating oscillation of the filter element. The d...	01/31/1984
4376050	Surge devices for liquid-solid separators The specification discloses surge controlling means for a liquid-solid separator. A plurality of surge compartments are provided above overflow weirs in a holding tank for the liquid-solid material....	03/08/1983
4287917	Diaphragm device for damping vibrations in flowing liquids For the damping of high-frequency vibrations in liquids under high pressure in conduit systems there serves a diaphragm (2) loaded by a spring (3) and surrounded on all sides by the liquid of the conduit system. When the liquid is stationary the diaphragm...	09/08/1981
4256579	Filter for liquids A filter for liquids has a housing, a filtering element accommodated in the housing and having a central tube, and a vibration damper located in the housing and having a membrane, a spring biasing the membrane and a casing arranged to accommodate the memb...	03/17/1981
4234427	Pulse damper A pulse damper for use in high-pressure liquid pumping applications such as liquid chromatography comprises a length of flattened polytetrafluoroethylene tubing that can be coupled to the high-pressure liquid flow line. The flattened tubing is enclosed wi...	11/18/1980
4196075	Membrane fluid transfer method and apparatus A method and apparatus for fluid transfer across a membrane wherein transfer fluid is passed through the interior of a wrapped, permeable, flattened, tubular membrane and fluid to be processed is passed through passageways formed between the wrappings of ...	04/01/1980
4156644	Pulsating sludge bed with inclined plates In a system for decantation treating of liquid containing therein suspended material, the liquid to be treated is pulsatingly introduced into the bottom of a sludge bed and pulsated therein. The liquid is passed upwardly through the sludge bed at a predet...	05/29/1979
4105547	Filtering process A filterable fluid flows under pressure through a filtering passage along one side of the filter, so that there is a substantial pressure drop along the filter area in the flow direction. A fluid flow in this same direction is provided in a filtrate passa...	08/08/1978
4024061	Pulse dampers for liquid chromatography In a liquid chromatograph apparatus, a pulse damper consists of a block of solid material almost filling the cavity of the damper, for example a polytetrafluoroethylene block occupying 99% of the volume of the cavity but arranged to move freely therein....	05/17/1977
4000070	Apparatus for protecting a liquid chromatography column An improved apparatus for protection of a liquid chromatography column is proposed. Under environmental changes in pressure and temperature, a liquid and a gas in a non-expandable container communicated with the chromatography column change their relative...	12/28/1976
3984315	Electromagnetic metering pump Apparatus for pumping the eluent liquid through a chromatograph column is provided in the form of an electromagnetic metering pump, the outlet of which is provided with a pulsation damping device in the form of a sealed chamber having a resiliently loaded...	10/05/1976

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Class 210/349 - Pulsation dampener or gas trapping