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Class 138/40 - Restrictors


Subclass of Class 138 - Pipes and tubular conduits
Definition: Pipes in which the means restricts the flow in the pipe,
No. of patents: 227
Last issue date: 03/24/2009


1            
NumberTitleIssue Date
7506666Anti-drip ring and drip seal
An anti-drip filter assembly includes a filter cartridge assembly, a sump and an anti-drip element. The filter cartridge assembly includes a filter element and an end cap permanently attached to the filter element. The sump encloses the filter cartridge assembly. Th...
03/24/2009
7431052Flow restrictor and system for delivering a flow of liquid in a microcapillary
The present invention relates to apparatus for delivering a controlled or restricted flow of liquid and limiting bubble fragmentation at the inlet. This is achieved in flow restrictor with a flow channel having over most of its length a substantially constant, minim...
10/07/2008
7431045Flow restrictor
A flow restrictor with a first disk having at least one inlet and at least one outlet and a flow path and a second disk having no flow path. The first disk and the second disk being stacked together. A mass flow controller comprising with an input, an output, a flow...
10/07/2008
7347223Pipe flow stabilizer
A fluid flow stabilizer for use in a flow of fluid in a conduit between a source of turbulence and a fluid control device. The stabilizer comprises a fluid conduit section having a first end with a mounting arrangement for mounting the first end to the fluid conduit...
03/25/2008
7334602Apparatus for controlling flow rate of gases used in semiconductor device by differential pressure
Provided is apparatus for controlling flow rate of gases used in semiconductor device by differential pressure by generating differential pressure in a fluid path. A differential pressure generation element generates pressure difference in the fluid path of gases us...
02/26/2008
7328592Circuit for the generation of cold or heat
A circuit for the generation of cold or heat comprising a compressor, an evaporator, a condenser and a restriction member made as a separate component and having a fixed throughflow cross-section, with the restriction member being inserted directly between two eleme...
02/12/2008
7306170Lawn sprinkler flow control device and tool therefor
A device for restricting water flow through a conduit in a landscape sprinkler system, wherein the conduit comprises a hollow pipe having an interior wall, the device comprising a generally rigid disc having an external periphery shaped to conform to the interior wa...
12/11/2007
7303730Waste gas treating device having flow regulator
An apparatus having a baffle device and used for treating an exhaust gas, the apparatus comprising: (a) an inlet duct through which the exhaust gas is flowed in, (b) a bend portion, and (c) a catal...
12/04/2007
7284899Emulsification/dispersion system using multistage depressurization module and method for producing emulsified/dispersed liquid
Disclosed is an emulsification/dispersion system, which comprises an emulsification/dispersion apparatus, and a multistage depressurization module connected to the outlet side of the emulsification/dispersion apparatus directly or through a heat exchanger. The multi...
10/23/2007
7207712Device and method for creating hydrodynamic cavitation in fluids
A device and method for creating hydrodynamic cavitation in fluid is provided. The device can include a flow-through chamber having a first portion and a second portion, and a plurality of baffles provided within the second portion of the flow-through chamber. One o...
04/24/2007
7191519Method for the manufacture of a vaned diffuser
An improved method for manufacturing a vaned diffuser (101) of a turbocharger, preferably from aluminum or an aluminum alloy, where the vaned diffuser possesses at least one axis (115) suitable for separating the vaned diffuser from its rigid mold by t...
03/20/2007
7165881Methods and apparatus for high-shear mixing and reacting of materials
Methods and apparatus for high shear reacting and/or mixing of moving fluid streams of materials employ an interdiffusing and reacting zone formed in the space between two stationary surfaces, the surfaces being spaced apart a maximum distance of the sum of the thic...
01/23/2007
7131456Mass flow controller
A mass flow controller includes a base having a passage that allows a fluid to pass through the passage. A first control valve controls a mass flow of a fluid passing through the passage. A second control valve controls a full scale of the mass flow of the fluid. A ...
11/07/2006
7114525Method and apparatus for reduction of fluid-borne noise in hydraulic systems
Method and apparatus for eliminating turbulence-induced noise in a pulsation-absorbing flexible hose, as in a hydraulic power steering system containing a pressure fluid-feeding pump and a steering gear operated by the pressure fluid discharged from the pump. The ho...
10/03/2006
7111799Narrow diameter needle having reduced inner diameter tip
Tubular needles have a reduced inner diameter tip portion that increases back pressure behind the tip portion. This constricted tip portion promotes improved atomization, particularly when the liquid passes through the needle at near-supercritical conditions. A pref...
09/26/2006
7108666Method and apparatus for performing a forced expiratory maneuver in an infant
Disclosed is a method and device for performing forced expiratory maneuver in an infant to assess the infant's pulmonary function. Under this method, the infant's lungs are synchronously inflated to super-atmospheric levels synchronous with the infant's natural tida...
09/19/2006
7098360Processes employing multiple successive chemical reaction process steps and apparatus therefore
The invention provides processes and apparatus for the production of materials requiring a plurality of chemical reaction steps. In the prior art the number of reaction vessels is minimized by performing two or more reactions together in the same vessel. Instead eac...
08/29/2006
7089963Flow laminarizing device
Representative embodiments provide for a flow laminarizing device including a plurality of walls defining a plurality of passageways, each passageway defining a hexagonal cross-sectional area and configured to permit fluid flow there through, a casing configured to ...
08/15/2006
7051765Balanced orifice plate
An orifice plate for use in a conduit through which fluid flows is defined by a central circular region having a radius R0 and a ring-shaped region surrounding the central circular region. The ring-shaped region has holes formed therethrough with those ho...
05/30/2006
7043937Fluid diode expansion device for heat pumps
An expansion device for the heat pump applications consists of a flow resistance device that has a different resistance to refrigerant flow depending on the flow direction through this device. The flow resistance device has no moving parts so that it avoids the dama...
05/16/2006
7024921Capillary devices for determination of surface characteristics and contact angles and methods for using same
Devices are presented which allow determination of unknown surface properties through the creation of a channel capillary, comprised in part of the subject surface or surfaces, and measurement of the capillary pressure created by a test fluid within the resultant ch...
04/11/2006
6994330Process for high shear gas-liquid reactions
A reactor produces a gas-in-liquid emulsion for providing increased interfacial contact area between the liquid and the gas for improved reaction of the gas with the liquid, or more rapid solution or reaction of a difficulty to dissolve or immiscible gas in or with ...
02/07/2006
6974116Rotary ball valve assembly
A rotary ball valve assembly for a rotary ball valve comprises a rotary closure element and an impedance assembly. The closure element is rotatable about a rotational axis, and has a through-bore defining a flow inlet and a flow outlet. The impedance assembly is pos...
12/13/2005
6953396Fabric flow restriction and method for conveying a volume of air
A fabric flow restriction and method for conveying a volume of air through a fabric duct prevents the violet popping that may occur with a fabric duct upon start-up. The fabric ducts are air permeable and/or include discharge openings that evenly disperse supply air...
10/11/2005
6938687Apparatus for transfer of heat energy between a body surface and heat transfer fluid
In apparatus for heat exchange to and from a body surface using a heat transfer liquid a heat exchanger comprises a plurality of elements within a casing connected axially against one another with spacer tube elements. Each element has its periphery spaced from the ...
09/06/2005
6886600Piping device and cutting oil coater using the same
A piping device for use in a cutting oil coater includes an oil supply path, a narrower path connected with the oil supply path and having an inside diameter smaller than that of the oil supply path, an oil tube, for feeding liquid oil to the oil supply path, a gas ...
05/03/2005
6863088Replaceable oriface unit
A replaceable orifice unit is disposed outside a pressure or a flow regulator valve, and therefore easy in maintenance, requires the smallest possible number of components, is compact in construction to save space, free from any fear that fluid impurities in a fluid...
03/08/2005
6840281Liquid flow pressure reducer and method
A pressure reducer is configured for use in a liquid delivery system that requires its liquid contents to be pressurized to a first, relatively high pressure but also requires that the liquid be delivered to a downstream location such as a faucet at a second, relati...
01/11/2005
6827107Method for manufacturing a throttle
The invention relates to a method for manufacturing a throttle (3) in a hose (1), characterized in that the wall (13) of the hose (1) is manufactured in such a way that the interior of the hose (1) has a constriction in part of its...
12/07/2004
6799602Combination fitting
A combination fitting for flow control devices in an automotive power steering system having channels disposed in the fluid receiving in of the fitting. ...
10/05/2004
6800005Exhaust system for a small watercraft
An exhaust system for a small watercraft wherein exhaust gas can flow smoothly includes a water muffler in the exhaust system for an engine incorporated in a small watercraft. An exhaust pipe is connected to the water muffler extending upwardly once and then extendi...
10/05/2004
6776439Flange plates for fluid port interfaces
Flange plates control the flow of fluid between fluid handling devices. In one embodiment, a sealing plate includes an O-ring and a structural support ring disposed within the O-ring. The support ring prevents the O-ring from being dislodged due to fluid pressure in...
08/17/2004
6722780Preparation of liquid dispersions
A process for mixing or dispersing liquids is provided that includes introducing liquids to be mixed or dispersed into a mixing device having a cylindrical support. The cylindrical support includes an inlet nozzle having a bore which is in fluid communication throug...
04/20/2004
6698455Fluid multieconomizer device
There is disclosed a fluid flow rate economizing device having a tubular body and a reduction in the inner diameter, suitable to install inside residential, commercial or industrial hydraulic tubing at fluid intakes, meters and/or registers....
03/02/2004
6696116Device and method for flowing pellets
Pellets which may, for example, simulate snow are brought to a position such as the top of a tree from where they are dispensed. After falling to the bottom. the pellets are collected and re dispensed. The pellets are blown through a venturi tube and from...
02/24/2004
6688378Heat exchanger tube with integral restricting and turbulating structure
A heat exchanger tube having an integral restricting and turbulating structure consisting of dimples formed by confronting indentations pressed into the sides of the heat exchanger tube. The dimples are comprised of indentations disposed in pairs which ex...
02/10/2004
6688423Fluid-borne noise suppression
A method of securing a restrictor, having an open hollow cylindrical end shell, to a spirally wound tuning cable having an end disposed in the shell, wherein the shell is magnetically deformed radially inwardly to grip and conform to the outer surface of ...
02/10/2004
6615874Stacked disk valve trim
The present invention provides a cost effective means by which pressure reduction in a fluid flow control device is optimized. The pressure reduction achieved according to the present invention also minimizes valve wear and presents new solutions in reduc...
09/09/2003
6615873Choke valve for automatic transmission
A choke valve for an automatic transmission is formed from a valve hole having a circular section that runs through a valve body in its thickness direction and a columnar valve main body that is fitted in the valve hole. The valve main body has a pair of ...
09/09/2003
6609733Differential pressure fitting
A pipe connection fitting having at one end a tapered edge (1) which communicates at its base with tightening nut (2) which communicates with male pipe threads (3) which communicates with extension member (4) having an angle cut (6) with a flow port (5) t...
08/26/2003
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