Showing papers on "Diffuser (sewage) published in 2001"

Imaging module for optical reader comprising refractive diffuser

Abstract: The present invention is an imaging module including various optical components and a circuit board, which, in one embodiment, carries essentially an entirety of illumination and aiming LEDs of the module. The module includes a combination of features which result in the size of the module being reduced. The module may comprise a refractive optic diffuser plate manufactured using a textured surface mold.

Night light air freshener

Abstract: An air freshener dispenser is taught having plug-through capability as well as a night light. The dispenser is a plug-in diffuser for such active materials as fragrances and air fresheners, and eliminates the consumer problem of loss of an electrical outlet, by providing a receptacle into which another plug may be inserted. The dispenser uses replaceable cartridges of material to be dispensed, and provides a night light for those who desire such.

Biaxially oriented polyester film for light diffuser plate and light diffuser plate

Abstract: A polyester film which is excellent in the property of evenly diffusing light, dimensional stability to high temperatures, and luminance and which is suitable for use as the substrate of a light diffuser plate for liquid-crystal displays. The film comprises a polyester consisting mainly of poly(ethylene 2,6-naphthalenedicarboxylate). It has a thermal shrinkage of 0.3% or lower in each of two in-plane directions perpendicular to each other when heated at 105°C for 30 minutes, and has a dimensional change of 1.0% or lower in each of two in-plane directions perpendicular to each other with changing temperature in the range of from 30°C to 150°C under a stress of 0.37 MPa. The film has a density of 1.350 g/cm3 or higher, a total light transmittance of 87% or higher, a haze lower than 1.5%, and a thickness of 50 to 150 νm.

Oxygen diffuser for patient oxygen delivery system

Abstract: An oxygen diffuser for a lightweight oxygen delivery system for a patient, the oxygen delivery system being of the type comprising a mount for seated engagement on a patient's head or ear, an elongated tubular boom for oxygen delivery secured at one end to the mount and having the diffuser secured to the other end, the diffuser to deliver oxygen passed through the boom to a space in the vicinity of the patient's nose and mouth, the diffuser comprising a body having a wall, the interior surface of which wall is of generally concave configuration, circumscribing a centrally positioned oxygen outlet so as to direct the flow of oxygen from the outlet generally towards the patient's nose and mouth; and a baffle seated over the oxygen outlet so as to assist in mixing of oxygen with ambient air and avoid a direct flow of oxygen towards the patient's face.

Solar aeration system

Abstract: The present invention is a solar powered aeration system that incorporates a battery. The device can be used for improvement of water bodies for use in aquaculture systems, reservoirs, water storage tanks, fish tanks, artificial ponds and lakes, and the like. The device does not require connection to the electrical power grid and may be used in any location. Further, the device can be used during periods of low oxygen content, which is typically the period of day just before sunrise. Additionally, the device uses a laminar column of water to enhance circulation of the water body. Increased efficiency can be obtained by matching the diffuser to the pump size, which is important in solar powered applications.

Method of treating intervertebral discs by inserting a diffuser directly into the annulus

Abstract: A method of controllably heating the annulus of an intervertebral disc is disclosed. The method comprises the steps of forming an access channel through the annulus of an intervertebral disc while avoiding the nucleus of the intervertebral disc, inserting a light-emitting diffuser into the annulus, and activating the light-emitting diffuser to emit diffuse light while maintaining the light-emitting diffuser within the access channel to raise the temperature of the annulus to a value sufficient to cause a change in the characteristics of the annulus.

Method of manufacturing a diffuser master using a blasting agent

Abstract: A diffuser master is provided which is manufactured mechanically instead of holographically. The master can be made from a suitable substrate including relatively hard materials such as plastic, glass or metal. A substrate having a first side is worked to form a diffuser surface relief structure thereon. The substrate can be buffed using a buffing agent of a selected grit in order to form surface scratches in the first side of the substrate. The substrate can also be blasted with shot particles in order to form indentations and depressions in the first side. The substrate can alternatively be acid or alkali etched in order to form surface irregularities in the first side. The scratches, depressions or irregularities can be formed in order to create a desired surface relief and hence desired diffuser output characteristics.

Airborne water diffuser

Abstract: An apparatus is for use with a container of liquid that is suspended from an aircraft flying over a ground target area. The container has an outlet through which the liquid is dropped from the container. The apparatus includes a diffuser configured to diffude the liquid exiting the container outlet horizontally outward beyond the container into the air above the groud target area, whereby the liquid is diffused over a correspondingly wide area. The liquid can be fire extinguishing liquid, and the ground target area can be a forest fire.

Methods and apparatus for supplying air to turbine engine combustors

Abstract: A combustor for a gas turbine engine that facilitates reducing combustor chamber dump pressure losses to improve combustor and engine performance is described. The combustor includes a diffuser that diffuses airflow directed into the combustor. The diffuser includes an outer wall, an inner wall, and a plurality of splitter vanes between the outer wall and the inner wall. The splitter vanes are spaced radially apart, and each is spaced radially from a respective diffuser wall such that an outer passage, an inner passage, and a central passage are defined by the splitter vanes.

Polyester film composite, light-diffuser plate and utilization thereof

Abstract: A polyester film composite characterized by comprising a biaxially oriented polyester film having a thickness of 50 to 200 ν µm and a readily bondable coating film formed on one or each side thereof, and by having a haze lower than 2% and a total light transmittance of 90% or higher; and a light diffuser plate which comprises the composite and a light-diffusing layer superposed on the readily bondable coating film(s). The light diffuser plate has excellent optical properties when used in a liquid-crystal display. The polyester film composite is useful as a substrate for the plate.

Ozonation of Soluble Organics in Aqueous Solutions Using Microbubbles

Abstract: This work investigates ozonation of a mixture of benzene, toluene, ethylbenzene, and xylenes (BTEX) dissolved in aqueous solutions having salt concentrations ranging from 0 to 2 M. The effect of microbubbles on the ozonation rate is examined. Microbubbles are formed either by an electrostatic spraying method or by a small-pore bubble diffuser. Although electrostatic spraying is effective for BTEX removal in low-conductivity solutions, results indicate it is not suitable for microbubble formation in high-ionic-strength solutions due to high electric current. In contrast, the bubble-diffuser method proved to be very effective in producing small bubbles in high-ionic-strength solutions. The production of small bubbles makes it possible to mitigate the mass transfer limitation, which has been shown to be the primary restriction in ozonation systems. When a bubble diffuser is employed, the removal rate of BTEX from simulated seawater is approximately twice that obtained with a simple capillary tube.

Compost tea system

Abstract: A compost tea system uses a water-holding tank for containing process water. Compost is immersed into the water in the tank in baskets defining a filter media. Air is pumped into membrane disk diffuser modules in the tank and the liquid is sparged with fine bubbles to thoroughly agitate the liquid, extract nutrients and microorganisms from the compost, and to ensure a high concentration of dissolved oxygen in the liquid. The high level of oxygen selects for desired aerobic organisms to produce a rich compost tea. The finished tea is drained out of the tank and the tank and its components are easily cleaned and sanitized.

System and method to treat livestock waste

Abstract: A method for treating livestock wastewater includes directing screened wastewater to a hydrocyclone/separation tank system. The hydrocyclone directs the wastewater stream in a generally helical fashion to create bubble-particle aggregates. Activating chemicals can be added to the wastewater upstream of the hydrocyclone or within the hydrocyclone itself. The wastewater is channeled from an outlet of the hydrocyclone through a diffuser to a separation tank, where the bubble-particle aggregates are separated as they rise and accumulate on a free liquid surface of the tank. The treated wastewater settles below the bubble-particle aggregate accumulation and is transferred to a reservoir for later use as irrigation water or barn wash water. Salts may also be removed from the wastewater by filtering the wastewater through salt-removing filters before the wastewater is transferred to the reservoir.

Off-design performance prediction for diffuser pumps

Abstract: This paper presents a numerical methodology developed for predicting off-design performance of diffuser pumps. In off-design conditions, the effects of rotor/stator interaction and the pump...

Fuel cell stack

Abstract: A fuel cell stack comprises fuel cell basic units, each of which including a gas diffuser/collector plate serving as an anode, an ion exchange membrane, disposed on top of the gas diffuser/collector plate and an air diffuser/collector plate serving as a cathode and disposed on top of the ion exchange membrane The gas diffuser/collector has a face directed to the ion exchange membrane This face is provided with a flow field incorporating a multiplicity of adjacent open-faced flow channels Each open-faced flow channel has a cross-section continuously diminishing from its inlet to its outlet The flow field, viewed from the top, forms a trapezoidal contour

Sound diffuser with low frequency sound absorption

Abstract: An existing diffuser is modified by creating through-holes in its diffusive surface that allow sound to travel through the diffuser to the rear of it where an absorptive material is provided. The absorptive material may be made of any suitable material such as fiber glass, foam or mineral wool. The cut-off frequency between diffusion and absorption may be “tuned” or adjusted by varying the total volume of holes made within the diffuser, and by determining the particular cavities (and their depths) that are chosen to be modified through the provision of holes. In each embodiment of the present invention, holes or slots are formed in a diffusive surface and such holes or slots form one component of a resonant absorber. The perforations can be any shape or size and by varying the perforation and cavity size, the inventive devices may be “tuned” to begin to absorb sound below a desired chosen frequency.

Air fluidized bladders for a bed

Abstract: A preferred embodiment mattress (1010) for a bed is provided to support a patient. The mattress (1010) includes a plurality of air fluidized bladders (1022). Each bladder (1022) includes a fluidized zone (1028) having fluidizable material positioned therein. Each bladder (1028) further includes at least one diffuser (1036, 1038) configured to provide air to the fluidized zone (1028) to fluidize the material.

Air diffuser and flushing method thereof

Abstract: An air diffuser (2) comprises a diffuser tube (5) immersed sidewardly in a tank (1), a flushing pipe (9) opening at its tip an outlet (11) at an upper position of the diffuser tube, and a flushing valve (12) disposed in the flushing pipe (9). The diffuser tube (5) is made up of a main pipe (6) communicated at its basal end to an air supply source (8) and communicated at its tip to the flushing pipe (9), and a plurality of branch pipes (7) being communicated to the main pipe (6) and opening at their tip as a blowhole (10) at a lower position of the main pipe (6). During air diffusion, air is supplied from the air supply source (8) with the flushing valve (12) closed, and the air is diffused from the blowholes (10). During flushing, air is supplied from the air supply source (8) with the flushing valve (12) opened and an intra-tank mixed liquor is sucked from the openings of the diffuser tube (5), thereby flushing the inside of the diffuser tube (5) with the sucked intra-tank mixed liquor. The intra-tank mixed liquor is then joined with air to come off together from the outlet (11) of the flushing pipe (9). Air diffusion from the blowholes (10) and the flushing of the diffuser tube (5) are alternately repeated by utilizing pulsation to be caused by pressure variations in the diffuser tube (5).

Improved aerator and mixer

Abstract: An aerator/mixer which includes a rotatable hollow drive shaft one or more air intake ports adjacent one end, and a propeller and an air permeable diffuser mounted adjacent to the other end; the diffuser is mounted below the propeller; and is in communication with the interior of the hollow drive shaft such that air supplied to the air intake port can exit only through the diffuser; the aerator/mixer further includes means for rotating the drive shaft and the propeller and means for supplying air at above atmospheric pressure to the or each air intake port.

Hair dryer assembly

Abstract: A hair dryer assembly provides an additional amount of heat to the air exiting the dryer ( 2 ). The assembly includes a hand-held hair dryer ( 2 ) and a diffuser ( 22 ) attachable to the air outlet end ( 18 ) of the hair dryer ( 2 ). The diffuser comprises a heating element ( 28 ) to add heat directly to a user's hair or to air passing out of the hair dryer ( 2 ) and through the diffuser ( 22 ). This additional measure of heat is used to facilitate drying and/or styling of hair.

Membrane air dryer with integral diffuser and method or manufacture thereof

Abstract: A membrane air drier (20) utilizes an orifice (52) to serve as the sweep air inlet with a sweep diffuser (53) placed a short distance from the orifice (52). Preferably, an open channel (50) extends from the product end of the membrane module on the shell side (21) of hollow fibers (24) with porous diffuser (53) at one end of the open channel (50) and the orifice (52) at the other end of the channel (50).

Gas diffuser and manufacturing method therefor

Abstract: PROBLEM TO BE SOLVED: To provide a gas diffuser which is flexible and comprises excellent mechanical characteristics such as high tensile strength and anti-compression characteristics. SOLUTION: A gas diffuser 4 is provided where a porous carbon base material 1 which is a collection of a plurality of carbon fibers 1a contains granular fluorocarbon resin 2 by 1-40 wt.% while the granular fluorocarbon resin binds carbon fibers together as a binder. The gas diffuser 4 is acquired by a method for manufacturing a gas diffuser which includes at least following processes (1), (2) and (3): a process (1) where the porous carbon base material is dipped in the dispersion liquid having granular fluorocarbon resin by 1-60 wt.%, a process (2) where a superfluous dispersion liquid is removed from the base material acquired through the process (1), and is dried to adjust a dried granular fluorocarbon resin into a range of 1-40 wt.% relative to the entire base material, and a process (3) where the base material provided through the process (2) is hot-pressed within the surface pressure range 1 Pa-10 MPa by batch press, otherwise a process where it is hot-pressed, by roll press, with a line pressure of 1-5000 N/cm, by a clearance of 30-90% of the thickness of base material before pressing. COPYRIGHT: (C)2003,JPO

Air bag inflation exit gas dispersion features

Abstract: An air bag device that includes an air bag cushion, a diffuser canister, and a gas generation inflator. The diffuser canister is attached to the air bag cushion and has walls configured to define an interior space therein. The walls of the diffuser canister have an interior surface, an exterior surface, and a wall thickness t. At least one of the walls has an aperture formed therethrough in communication with the interior of the air bag cushion. The gas generation inflator is configured to rapidly create a gas that exits the diffuser canister through the aperture so as to fill the air bag cushion. The aperture is defined by an edge extending between the interior and said exterior surfaces of the wall that is configured to diffuse the gas exiting the diffuser canister through the aperture. The edge of the aperture is configured such that the cross-sectional area of the aperture that is proximate to the exterior surface of the wall is larger than the cross-sectional area of the aperture proximate to the interior surface of wall. The edge includes an angled portion configured such that opposing sides of the aperture have an angle α therebetween in the range of about 20 degrees to about 145 degrees. The aperture has a diameter d1 proximate to the interior surface of the wall and is configured so that the diameter d1 and wall thickness t have a ratio d1 to tin the range of about 0.5 to about 4. An alternate embodiment of the air bag device comprises an aperture defined by an edge that is configured so that the cross-section of aperture is non-smooth and causes turbulence in the gas stream.

Binary burner with Venturi tube fuel atomization and Venturi jets for the atomization of liquid fuel

Abstract: The invention relates to a burner, in particular, for a motor vehicle supplementary or parking heater, for the burning of liquid fuel, in the presence of combustion air, comprising a combustion chamber (10), with a jet for the atomisation of liquid fuel, arranged before said chamber. According to the invention, the jet comprises a venturi tube (11) with the largest diameter end of the diffuser section thereof, opening into the combustion chamber (10), into the low pressure region of which, when compared with the upstream end of the diffuser section (12), the liquid fuel is introduced and through the inlet section (13) of which the air is pumped.

Compost tea apparatus and methods

Abstract: The improved compost tea producing apparatus and methods of the present invention are directed to aeration means which substantially increases the count of beneficial organisms in liquid compost tea compositions Such aeration apparatus of the present invention includes an air blower having an air provision capacity of at least approximately 350-500 ft/min An air conduit is connected to the output port of the air blower, with such conduit having a generally vertical portion and such vertical portion having an effluent opening An air diffuser tube is attached to the effluent opening of the vertical portion of the air conduit, with such air diffuser tube having a plurality of air bubbling apparatus as disposed along the length thereof for transmitting air into a volume of liquid compost tea

Cleaning method of diffuser

Abstract: PROBLEM TO BE SOLVED: To provide a cleaning method of diffuser, which can easily remove dry and deposited foreign matter by making a water to be flow backward into an air diffusion pipe. SOLUTION: In this diffuser, a gas for diffusion is jetted into the water to be treated by diffusion in a reaction tank 1 from a plurality of jet ports 3 at the bottom of the air diffusion pipe 2 immersed in the tank 1. After stopping diffusion, the water to be treated is made to flow backward into the air diffusion pipe 2 from a tip opening 4 of the air diffusion pipe 2 bent downward and each jet port 3. The influent water humidifies the foreign matter dry and deposited in the vicinity of each jet port 3. Then, diffusion is restarted, and the water to be treated in the air diffusion pipe 2 is discharged from the tip opening 4, and the humidified foreign matter is removed by the sweeping stream of the water to be treated.

Holder assembly system and method in an emitted energy system for photolithography

Abstract: An emitted energy system for use in photolithography may include a holder assembly operable to precisely align a diffuser and a nozzle. In accordance with one embodiment of the present invention, a holder assembly (30) may comprise a nozzle mounting system (414) coupled to a housing assembly (400) to secure a nozzle (22). A diffuser mounting system (430) may be coupled to the housing assembly (400) to secure a diffuser (28). An alignment system (450) may operate to align the nozzle (22) and the diffuser (28) in a spatial relationship with each other to optimize operation of the diffuser (28) in relation to the nozzle (22).