478results about How to "Slow flow" patented technology

A stepped labyrinth seal for a turbomachine, the seal having a stepped portion with a redirecting groove formed thereon to redirect a leakage flow through the gap in substantially a reverse direction and onto a surface of the finger such that the dynamic pressure of the leakage flow is not substantially reduced and the static pressure increased. The cavity formed between adjacent fingers has a flow guiding surface that maintains the dynamic pressure of the flow, thereby keeping the flow at high velocity and low static pressure.

The invention provides a medical device having a thermister for temperature measurement, irrigation/aspiration ports for fluid exchange and application of therapeutic modalities, a pressure manometer for pressure measurement, and an external system for control of temperature, pressure, and flow rate. When applied to the eye and orbit, this device can be used in hypothermia or hyperthermia applications, the control of intraocular pressure (IOP), and the application of treatment modalities. Methods of using the device in treating patients suffering from central retinal artery occlusion, anterior optic nerve disease, pathology of the choroid and retina including the macula, inflammation of the eye including the vitreous and anterior segment, glaucoma, inflammation and/or infections of the anterior and/or posterior segment of the eye, treatment before/during/after surgery of the eye, and the application of treatment modalities through a semi-permeable membrane are described.

An animal toy features the ability to connect two or more separate toys of varying shape, size, color, and/or texture, together to create larger and more complex toy systems. The animal toy allows an almost endless variety of toy systems to capture the interest as well as challenge and develop the animal's problem solving skills. The animal toys are either solid or include internal chambers for holding and ultimately dispensing food. When two or more toys with the internal chambers are combined the food may flow from the chamber of one toy into another toy several times before exiting the toy system. The increased problem of extracting the food challenges and develops the animal's skills. Morever, by combining solid and food dispensing toys in random combinations further increases the problem solving skills required to completely extract the food from the toy system.

The invention discloses an environmentally-friendly barium-free thixotropic antirust oil, which is characterized by comprising the following components in percentage by weight: antirusting agent 4.0-25.0, thixotropic agent 0.1-5.0, antioxidant 0.1-3.0 and base oil 72.0-94.0. The preparation method of the environmentally-friendly barium-free thixotropic antirust oil comprises: firstly, adding the base oil into a reaction kettle, stirring the base oil, heating the base oil to 110 to 120 DEG C, adding the antirusting agent, stirring the mixture for continuous dehydration for 1 hour, and cooling the mixture to 50 to 60 DEG C; and secondly, adding the antioxidant, stirring the mixture for 3 hours at a constant temperature of 50 to 60 DEG C, adding the thixotropic agent, stirring the mixture for1 hour at 50 to 60 DEG C, cooling the resulting product to 40 DEG C, filtering the resulting product and discharging the resulting product. For obtaining antirust oil films that are insusceptible toflow and free from heavy metal barium, the antirust oil selects a proper barium-free corrosion inhibiter to ensure excellent antirust performance besides the thixotropic agent added for quickly forming stable oil films of antirust oil.

A stormwater treatment system designed to separate floating pollutants, liter, and contaminated settling solids from drainage discharge. The system uses a cylindrical tank, buried below the ground, which enables separation of the pollutants. The stormwater flows around the inside perimeter of the tank until it flows into an inner cylinder through a weir (or weirs). This causes a delayed flow due to the limited entry point through the vertical weir. The extended amount of resonance time allows for separation of pollutants, liter, and contaminated solids. The stormwater continues to separate itself as it flows around the inner cylinder, up through a vertical pipe and out an outlet pipe. The solid contaminants which are left behind are stored and able to be removed later.

A direct current (DC) to DC converter is provided. The DC to DC converter includes: a transformer which comprises a primary winding which is connected in series with an input voltage and a secondary winding which generates induced current when the input voltage is applied to the primary winding; a switching part which is connected to the primary winding and performs a switching operation according to a predetermined control signal; a first delay part which delays an increasing rate of voltage between open nodes according to a turned-off state of the switching part and supplies a discharge current when the switching part is turned-on; and a second delay part which delays current flow in the switching part when the first delay part discharges the current when the switching part is turned-on.

The invention provides a preparation method for polyacrylonitrile base carbon fiber protofilament. ammonium persulfate-ammonium sulfite or ammonium hydrogen sulfite is used as the aqueous phase suspension copolymerization of a initiation system for preparing polyacrylonitrile base carbon fiber protofilament which uses polymers as raw materials; polymers are made into 16-20Wt percent of slurry at -18-0 DEG C, vacuumized to 40-95 Kpa and dissolved for 1-2 hours at 40-55 DEG C; then spinning stock solution at 70-80 DEG C is extruded into a spinning pipe in coagulation bath via a spinneret to be shaped, and PAN nascent fiber is obtained through the minus elongation of the coagulation bath; the PAN nascent fiber has desolventize flushed away by hot water, and is simultaneously stretched, oiled, dried for densification, baked and elongated to obtain PAN base protofilament, and the tensile strength is no lower than 6.60N/dtex; the carbon fiberstrength is 3.30-4.01Gpa, and the elastic modulus is 210-262Gpa. The main technical indexes of the present invention are equivalent to the similar products in America, Japan and other countries.

Apparatus and method for a continuous replenishing of the lift gas and maintaining the proper pressure and lift of a tethered medium altitude aerostat utilizing a novel feed tube running the entire length of the tether. A first end of the feed tube is connected to the aerostat while a second end is connected through a novel slip ring means to a pressure controlled helium ballast chamber and scrubber on the ground to maintain pressure and lift by a reversible compressing pump. A plurality of pressure and temperature sensors and tension gauges strategically placed inside and around the airship continuously monitor the temperature and pressure changes in the aerostat. A data retrieval and communication unit mounted on the aerostat collects measurement data from the pressure, temperature and tension sensors which is relayed to the ground station and the data is used to regulate lifting gas pressure inside the aerostat.

The present disclosure relates to systems and methods for controlling pressure during percutaneous and endoscopic surgeries, including percutaneous renal procedures, endoscopic uterine procedures, transurethral endoscopic procedures for the bladder or prostate, or any percutaneous or endoscopic procedure. The system can include a sheath and/or endoscope each having an inflow port providing access to an inflow channel extending from the inflow port to a distal portion of the sheath, and an outflow port providing access to an outflow channel extending from the outflow port to the distal portion of the sheath. The sheath can also include a pressure sensor configured to generate a pressure measurement, and an electronic processor configured to control fluid through at least one of the inflow port and the outflow port based on the pressure measurement.

The present invention discloses a technology for a printed wiring board which uses a copper foil without roughening treatment. Therefore, electrodeposited copper foil with carrier foil which is sequentially constituted with carrier foil, bonding interface layer, electrodeposited copper foil with smooth surface on both side and a resin layer is employed. The resin composition constituting the resin layer is composed of 20 to 80 parts by weight of an epoxy resin which includes curing agent, 20 to 80 parts by weight of a solvent soluble aromatic polyamide resin polymer and curing accelerator in a suitable amount if required.

This invention is for a composite structure and a garment constructed from the composite structure which can be worn next to the skin or as outerwear as well as a process for making the composite structure and garment. The garment provides microclimate control for the wearer by means of at least one three-dimensional passageway formed by an outer cover material which is secured to a first substrate layer. The passageway contains a filler material which adds support to the walls of the passageways and allows a fluid to flow through the filler material. The passageway provides a thermal insulation by its bulk or by allowing a fluid to be pumped through it. The first substrate layer is breathable to increase the comfort level of the wearer.

Abnormal (i.e., emergency) shutdown of a chemical reaction process is accomplished by a method of safely operating a chemical reaction process that includes the steps of detecting adverse conditions that can affect the reaction process, minimizing the reaction of reactants, and maintaining The flow of material in the reaction zone of the process to displace the reaction mixture from the reaction zone. The flow of material is maintained for a period of time to displace substantially all of the reaction mixture from the reaction zone, thereby flushing the reaction zone. The reaction mixture can then be flushed into an auxiliary vessel, such as an absorption column.

A hydraulic traction system for vehicles is described. The system comprises a hydraulic vane motor mounted at each wheel of the vehicle, and equal number of identical hydraulic vane motors operated as engine driven pumps, and a control system for regulating the flow and direction of hydraulic oil during operation. The hydraulic motor is of a novel design that has a hollow non-drive shaft that accepts incoming hydraulic oil, this allows internal components of the hydraulic motor to be arranged in such a way to improve the efficiency of the hydraulic traction system.

A method of resistance spot welding a steel workpiece and an aluminum or aluminum alloy workpiece, and a welding electrode used therein. In one step of the method a workpiece stack-up is provided. The workpiece stack-up includes a steel workpiece and an aluminum or aluminum alloy workpiece. Another step of the method involves contacting the aluminum or aluminum alloy workpiece with a weld face of the welding electrode. The welding electrode has a body and an insert. The insert is composed of a material having an electrical resistivity that is greater than an electrical resistivity of the material of the body. The weld face has a first section defined by a surface of the insert and has a second section defined by a surface of the body. Both the first and second sections make surface-to-surface contact with the aluminum or aluminum alloy workpiece amid resistance spot welding.

An improved radiator mounting and cooling system for use in automobiles allows multiple components to be incorporated into the same unit, limiting the need for accessories to be mounted to inner fenders or firewall. A circulating vortex of air is pulled through a front grill and vortex tubes disposed through sides of the radiator system to improve cooling efficiency. An outer shroud protects interior components and creates a sealed core cavity allowing air to only enter through vortex tubes and front grill and exit through a rear grill. A self-circulating cooling system provides additional cooling of coolant. A fan system pulls around 5000 CFM of air through the core cavity. An optional secondary coolant pumping system allows coolant to be pumped when needed. A control system controls activation of the fan system and secondary coolant pumping system based on signals from sensors.

The present invention relates to a simple hydraulic power unit which comprises a foldable-wing type waterwheel generating device arranged between pipes and rotates under inflow water pressure. The generating device comprises a cam-type water wheel, a rotating shaft arranged in the center of the cam-type water wheel, and a generating mechanism arranged at one end of the rotating shaft and converting kinetic energy into electricity. The cam-type water wheel comprises a cylindrical body having a rotating shaft inserted in the center and rotating with the rotating shaft, two telescopic blades spacedly arranged on the periphery of the cylindrical body and making the cylindrical body to rotate under inflow water pressure, and cam type slot covers arranged at two side surfaces of the cylindrical body and allowing the telescopic blades to withdraw or protrude along the inner side surface as rotation of the cylindrical body. The simple hydraulic power unit enables the generation of a substantial amount of electricity with a low flow rate and speed.

A method for floating at least one substance for growing a tissue part in a bioreactor. The method includes providing at least one substance consisting of one of a tissue part, a scaffold having cells deposited thereon, and a scaffold including a tissue part thereon. The method further includes further acting upon the substance with fluid, wherein the fluid holds the substance in free floatation. The fluid flows in a direction counter to gravity when a density of the substance is greater than a density of the fluid, and in a direction counter to buoyancy when a density of the substance is less than a density of the fluid. The bioreactor for floating at least one substance for growing a tissue part includes a container including a first flow chamber and at least one substance consisting of one of a tissue part, a scaffold having cells deposited thereon, and a scaffold including a tissue part thereon. The substance is acted upon with fluid. The bioreactor further includes an apparatus for conveying the fluid. The substance is arranged in the first flow chamber in such a manner that the fluid holds the substance in free floatation.

The invention relates to a negative-pressure soda lye absorption craft for the nitrogen-oxide waste gas, belonging to the environment protecting, emission reducing and energy saving technical field, which is characterized in that: the NOx gas brought by nitration reaction flows in a direction under the function of vacuum power, that is, the gas flows through the condenser, the receive pot, the primary absorption pot, the secondary absorption pot, the three-level soda lye pond orderly; the evaporative nitric acid is condensing from gas to liquid into receive pot to store through the condenser; the NOx not condensing enters into the negative-pressure absorption workshop section; the whole working procedure are in series and enclosed totally without leaking; the three levels absorption can assure the tail gas NOx absorbed entirely and not diffused to the atmosphere to pollute the environment, meanwhile the zero-emission is realized.

The invention relates to a self-sucking type bearing lubricating device. The self-sucking type bearing lubricating device comprises a self-sucking shaft sleeve and a bearing, wherein the self-sucking shaft sleeve is fixed to the peripheral face of a transmission shaft in a sleeving manner and can axially rotate around the self-sucking shaft sleeve along with the transmission shaft, and the bearing is arranged on the peripheral face of the self-sucking shaft sleeve in a sleeving manner. A spiral oil sucking groove spirally elevating lubricating oil in an oil storage cavity in the lower end of the self-sucking shaft sleeve to the upper end of the self-sucking shaft sleeve is formed in the inner wall of the self-sucking shaft sleeve. The self-sucking shaft sleeve is further provided with an oil throwing channel throwing lubricating oil elevated to the upper end of the self-sucking shaft sleeve to the upper end face of the bearing. The self-sucking type bearing lubricating device is provided for vertical equipment, oil bath heat dissipation of the bearing is achieved, the cooling speed of the lubricating oil on the bearing is high, the cooling effect of the lubricating oil on the bearing is good, product input and using cost is low, and safety is high; and the service life of the bearing is greatly prolonged, and running stability of corresponding devices is greatly improved.

A regulating component to regulate fluid flow through the axial passage communicating between the intake end, and mouth engageable distal end, of a drinking straw. The component has an upper wall separated from a lower wall by an engaged sidewall all defining a restriction chamber. When engaged in the axial passage of a drinking straw, fluid traversing the straw all traverses through apertures in the lower and upper wall and thereby through the restriction chamber. Force of the moving fluid on a ball in the restriction chamber acts to raise the ball to seal the aperture in the upper wall. If the fluid reaches too high a speed or continues long enough at a lower speed to move the ball upward it seals the restriction chamber from the exit end of the straw.