249results about How to "Increase back pressure" patented technology

A filter, system and method is provided for filtering nanoparticles in a hot gas, namely particles <about 1 micron in a gas >about 200° C. and further particularly >about 450° C. including diesel exhaust. The filter includes filter media material composed of fibrous filter media having a plurality of fibers and granular filter media having a plurality of granules extending from the surfaces of the fibers. The filter is characterized by a permeability >about 3×10−12 m2 and an inertial resistance coefficient <about 1×106 m−1. The filter captures particles in the Most Penetrating Region (MPR). A filter system includes a nanoparticle filter in series with a diesel exhaust treatment element.

An automobile catalytic converter that utilizes the energy of the exothermic reactions that take place in the catalysis substrate to produce electrical energy with a thermoelectric generator. On vehicle cold start, the thermoelectric generator is used as a heat pump to heat the catalyst substrate to reduce the time to catalyst light-off. In this way, the catalytic converter comes up to operating temperature more rapidly, reducing the amount of pollutant emissions at vehicle start-up.

A honeycomb structure which includes an inlet end and an outlet end opposing each other and a plurality of cell channels extending along an axis from the inlet end to the outlet end, the cell channels having non-equal, square cross-sections, and an extrusion die for making the same.

A high performance liquid chromatography system employs a nebulizer with a flow restriction at the exit of its mixing chamber to produce finer droplets, and an adjustable impactor for increased control over droplet sizes. Downstream of the mixing chamber, the nebulizer can incorporate tubing that is permeable to the sample liquid, to promote aerosol drying through perevaporation. A condensation particle counter downstream of the nebulizer uses water as the working medium, and is adjustable to control threshold nucleation sizes and droplet growth rates. A particle size selector employing diffusion, electrostatic attraction or selection based on electrical mobility, is advantageously positioned between the nebulizer and the CPC.

A cyclone comprises a cyclone chamber having an air inlet, an air outlet, a first end wall, a second end wall and a sidewall, the air inlet has an inlet end having a shape and a cross sectional area in a plane transverse to a direction of airflow through the air inlet, and the air inlet is provided at a first juncture of the sidewall and the first end wall, wherein the first juncture downstream of the inlet is configured to at least approximate a portion of the shape of the air inlet that is adjacent the first juncture.

Water filters systems for providing potable water including a combination of ceramic with anti-microbial embedded therewithin, and granular activated charcoal.

A wrap spring clutch syringe ram pushes at least one syringe with virtually instantaneous starting and stopping, and with constant motion at a defined velocity during the intervening push. The wrap spring clutch syringe ram includes an electric motor, a computer, a flywheel, a wrap spring clutch, a precision lead screw, a slide platform, and syringe reservoirs, a mixing chamber, and a reaction incubation tube. The electric motor drives a flywheel and the wrap spring clutch couples the precision lead screw to the flywheel when a computer enables a solenoid of the wrap spring clutch. The precision lead screw drives a precision slide which causes syringes to supply a portion of solution into the mixing chamber and the incubation tube. The wrap spring clutch syringe ram is designed to enable the quantitative study of solution phase chemical and biochemical reactions, particularly those reactions that occur on the subsecond time scale.

A burner and a method for producing an inorganic soot such as silica comprising a plurality of substantially planar layers having multiple openings therethrough formed by a micromachining process. The openings are in fluid communication with a precursor inlet and a gas inlet to permit the gas and the precursor to flow through and exit the burner. The burner produces a flame from a combustible gas in which the precursor undergoes a chemical reaction to form the soot.

In an improved floating ball check valve including a body having an outlet port, a cap, having an inlet port, joined with the body, a ball guide slidably received within the body and having a ball pocket for receiving a sealing ball, a biasing spring for biasing the ball toward the inlet port, an annular seat retainer in the cap and a generally ring-shaped seat, of non-resilient plastic material of preferably thermoplastic or fluoroplastic composition, substantially received within a conical bore within the cap and retained therein via the seat retainer, with the spherical surface of the ball being urged into a sealing engagement with an arcuate / spheric sealing surface of the seat having a radius slightly larger than the radius of the sealing ball, with the noted seat materials and geometries permitting seat self-compensation for pressure and temperature. An improved manufacturing method is also set forth.

A care or cleaning device for a medical instrument and a process for determining whether an instrument is connected to one or more coupling devices of the care or cleaning device. Compressed air supplied to each coupling device through a compressed air line causes a backpressure and an increase in the air pressure applied in the compressed air line. If no instrument is connected to a coupling device, then the compressed air can escape through the comparatively large opening in the coupling device and without any great resistance, so there is no increase in the air pressure in the compressed air line. When an instrument is connected, a sensor element senses the air pressure applied in the compressed air line and sends an input signal to a control device. By analyzing the received input signal, the control device detects whether or not the coupling device is occupied by an instrument. In the same way, this process can also be used to differentiate different types of instruments.

A continuously variable transmission is disclosed comprising a transmission input, a transmission output, and a continuously variable ratio unit (“variator”) arranged to be coupled between the transmission input (205) and output (240) by means of at least one clutch (230,250) thereby to enable transfer of drive between the input and the output at a continuously variable transmission ratio. The variator is connected to a hydraulic control circuit (50) and so subject to a hydraulic control pressure which is adjustable by the control circuit and is also influenced by changes in variator ratio. The variator is constructed and arranged such as to adjust its ratio to provide a variator reaction torque which corresponds to the control pressure. The transmission further comprising means (311,310) for adjusting the torque capacity of the clutch while it is engaged so that by controlling torque loading applied to the variator, the clutch influences the control pressure and the reaction torque.

An exhaust-gas turbocharger turbine of an internal combustion engine is provided with a spiral guide passage arranged in a turbine housing, a turbine impeller, a flow gap be ween the guide passage and the turbine impeller, and guide blades forming a guide cascade. The guide cascade with the guide blades projects axially from a support, arranged so as to be displaceable in the axial direction in the turbine housing, in such a way that the guide blades, in normal operation, are mounted in recesses of a housing wall part of the turbine housing, the recesses, in the form of a female piece, forming a mating profile shape for the guide blades. In braking operation of the internal combustion engine, the guide blades project into the flow gap during an axial displacement of the support. The device with actuation for the braking operation can be fitted as a complete module into the turbine spiral.

A catalyst which efficiently removes particulate matter, SOF, sulfate, and SOOT and the like from the exhaust gas from such an internal combustion engine as a diesel engine without inducing a rise in the back pressure of the engine is provided. The catalyst for the purification of the exhaust gas of an internal combustion engine is formed by using an open flow honeycomb containing in the channel walls thereof such pores as possess an average diameter in the range of 10-40 μm.

The present invention provides apparatus featuring a check valve featuring a duckbill valve configured to provide fluid and particulate; and an insert having a base portion configured to seat the insert inside the duckbill valve, and a W-shaped portion configured with an opening to pass the fluid and particulate through the duckbill valve and also configured to provide support for walls of the duckbill valve in response to back pressure caused by the fluid and particulate.

A startup control apparatus of an internal combustion engine including a supercharger having a turbine driven by exhaust gas from the internal combustion engine, a variable nozzle mechanism provided in the supercharger and regulating the flow rate of exhaust gas to the turbine, and an exhaust gas control catalyst arranged in an exhaust passage on the downstream side, with respect to the direction of exhaust gas flow, of the turbine. A controller selectively performs, during a cold start, control to increase the amount of combustion gas in a cylinder of the internal combustion engine by reducing the sectional area of a nozzle passage of the variable nozzle mechanism and increasing back pressure, and controls to deliver exhaust gas to the exhaust gas control catalyst by increasing the sectional area of the nozzle passage of the variable nozzle mechanism.

An exposure system is provided which can maintain a predetermined performance of the exposure apparatus stably by maintaining a cooling capacity by preventing a negative pressure from being generated in a circulation path of the liquid and preventing the back pressure from increasing even if at least a part of a temperature adjusting device is disposed under a disposition surface of the exposure apparatus due to the disposition area. A sealed tank which stores the cooling agent which is circulated in the circuiting systems and a pump, etc., which circulates the cooling agent are disposed under the disposition surface FL of the exposure system. The reticle stage and the wafer stage which are objects of which the temperature is supposed to be controlled are disposed above the disposition surface FL. A tank which open to air is provided so as to prevent the negative pressure from being generated in the reticle stage, etc. such that the tank and the tank are connected by a connecting piping arrangement. Also, the piping arrangement which eliminates the bubbles which are contained in the cooling agent which is circulated in the circulating systems are connected to the circulating systems.

The invention relates to a vacuum device which is suitable for vacuum environment providing a plurality of cavities. The vacuum device comprises a plurality of pumping units and a third pipeline unit, wherein each pumping unit is connected to one cavity and comprises a low vacuum pumping device, at least one vacuum pumping device, a first pipeline unit and a second pipeline unit. A high vacuum pumping device is arranged between the low vacuum pumping device and a corresponding cavity; the first pipeline unit is connected to the high and low vacuum pumping devices and is provided with at least a first valve; the second pipeline unit is connected to a corresponding cavity and the first pipeline unit and is provided with a second valve; the joint of the second pipeline unit and the first pipeline unit is positioned between the first valve and the low vacuum pumping device; the second pipeline unit is connected to the first pipeline unit; and the third pipeline unit is provided with at least a third valve arranged between the adjacent first pipeline units.

A cyclone comprises a cyclone chamber having an air inlet, a vortex finder, a first end wall, a second end wall and a sidewall, the air inlet has an inlet end having a shape and a cross sectional area in a plane transverse to a direction of airflow through the air inlet, and the air inlet is provided at a first juncture of the sidewall and the first end wall, the vortex finder has a wall that meets one of the first and second end walls at a second juncture, wherein the second juncture extends at an angle to both the wall of the vortex finder and the end wall on which the vortex finder is provided.

The method and assembly are provided for converting a standard showerhead into a combination showerhead and spa spray bar that can be easily installed without modification of existing house plumbing. The spray bar comprises a cylindrical tube with a series of small bores adapted to project individual streams of water perpendicular to the surface of the tube with sufficient pressure to produce a soothing or stimulating effect when they contact the bather's skin. After removal of the existing showerhead, a 3-way connector is connected to the existing water source for directing water to both the showerhead and the spray bar. Flow control valves permit selection one or both of the showerhead and spray bar. The spray bar is attached to a vertical surface located near the bathing position so that multiple water streams are projected towards the user's bathing position.

A lint trap for trapping air particles includes an air inlet for allowing the air particles to enter the lint trap and a base having a tapered gradient for increasing the velocity of the air particles and containment by centrifugal force. The air inlet is connected to a dryer.

A motor vehicle roof is provided that includes, but is not limited to a base roof and a roof segment. The roof segment is adjustable relative to the base roof. In a closed state, the roof segment fits tightly with the base roof. When opened, the roof segment is arranged to provide a space between itself and the base roof. A spoiler is provided that is connected to and adjustable with the base roof and kinematically connected to the roof segment in such a way that through the movement of the spoiler, the roof segment can be opened and closed state. Additional storage space for the placement of baggage is formed when the roof is in an opened state.

A gas flow enhancer for a combustion engine includes a housing, configured to receive an inlet flow of gas at an inlet pressure, and enclosing an expansion chamber. Disposed within the expansion chamber are a set of inner vanes and outer vanes, and a flow separator. The outer vanes are disposed outside the flow separator and produce an outer helical flow of the gas. The inner vanes are disposed within the flow separator and produce an inner helical flow of the gas, the inner helical flow having a higher velocity and lower pressure than the outer helical flow. The outer helical flow and inner helical flow are recombined at an outlet of the expansion chamber so as to produce an outlet laminar flow profile having a lower average pressure than the inlet pressure.

A method for spray deposition of small targets, such as medical devices like stents. The method includes the steps of positioning a spray nozzle body, which has a fine bore diameter to pressurize the coating material within the nozzle body, near a medical device, and dampening vibration of the nozzle body during operation by maintaining a steady back pressure in the coating material line sufficient to eliminate or minimize vibration modes from external and internal sources; and stabilizing the spray coating plume. In another embodiment, a coating method is disclosed in which a finer atomized spray droplet size is achieved by pre-filming the coating material onto a flat face before entraining the coating material within the atomizing fluid, which improves manufacturing repeatability, reduces coating variances, and increases therapeutic dosage predictability. In certain embodiments of the invention, the coating materials include therapeutic agents and biologically active materials.