89results about How to "Maximize flow" patented technology

An LED lighting device comprises: a thermally conducting body having an at least one opening that connects with a cavity within the body and a plurality of LEDs mounted in thermal communication with a face of the body and positioned around the opening. One or more passages pass through the body from the cavity to an outer surface of the body and are configured such that in operation air moves through the cavity by thermal convection thereby to provide cooling of the body. Each passage is configured in a direction that extends in a direction at an angle of about 45° to a line that is parallel with the axis of the body toward the outer surface of the body away from the face. The body can be configured such that its outer surface has a form factor resembling an incandescent light bulb or halogen reflector lamp.

A capsule for the preparation of a coffee extract from coffee contained therein and hot water injected under pressure in the capsule by a water injection device. The capsule has a frusto-conical body with a rim, sidewall, and an inlet wall and a lower delivery wall sealed to the rim and contains a predosed amount of coffee. The inlet wall may have a flat or convex portion and a structure in relief or in recess arranged for facilitating penetration of blades belonging to the injection device and extending on a substantially circular path of predetermined radius R1 equal to the radius R2 of the circular path along which the blades of the injection device extend.

An apparatus for establishing a re-usable, recurring, mechanical connection to an organ within a patient is provided. A subcutaneous needle connection system for providing bidirectional, straight and turbulent-free fluid flow access to a vascular system of a patient includes a housing defining a needle access opening for receiving a needle, a cannula opening in communication with the vascular system and a passageway connecting the needle access opening to the cannula opening. The housing can additionally have a second needle access opening connected to a second cannula opening via a second passageway. The subcutaneous needle connection system allows for blood to be removed from the vascular system via one cannula opening, passed to a hemodialysis system via a needle inserted in an associated needle access opening, treated using the hemodialysis system, and returned to the vascular system via the other needle access opening and associated cannula opening. The implantable needle connection system provides enhanced mechanical stability under the skin, improved fluid flow dynamics, improved needle hole healing potential of the skin, and improved needle edge interfacing to minimize flow turbulence and blood cell trauma during use.

Crossflow thrombectomy catheter and system for fragmentation and removal of thrombus or other material from blood vessels or other body cavities. High velocity saline jets emitted from a toroidal loop jet emanator or other jet emanator in a catheter distal end entrain fluid through inflow orifices, and with flow resistances create a back-pressure which drives crossflow streams through outflow orifices in a radial direction and thence radially and circumferentially to apply normal and drag forces on thrombotic deposits or lesions in the blood vessel or other body cavity, thereby breaking apart and transporting thrombus particles to be entrained through the inflow orifices, whereupon the high velocity jets macerate the thrombus particles which then transit an exhaust lumen or recirculate again via the outflow orifices.

A surgical technique wherein an indwelling shunt is placed in the eye of a patient having glaucoma. The shunt diverts aqueous humor from a deep scleral lake or directly from the anterior chamber to the suprachoroidal space from which it is removed by blood flowing in the choroidal and uveal tissues. This decreases the intra-ocular pressure. The indwelling shunt maintains the area of exposure of aqueous humor with the uvea by physically preventing scarring of the surrounding tissues. The method utilizes the 25 mm Hg driving force of the protein colloidal osmotic pressure of the blood to maximize the flow.

There is disclosed a voltage supply stage comprising: a selection means for selecting one of a plurality of power supply voltages in dependance on a reference signal representing a desired power supply voltage; a combining means for combining the selected power supply voltage with a correction signal to generate an adjusted power supply voltage; and an adjusting means adapted to generate the correction signal in dependence on the reference signal and the adjusted power supply voltage, wherein the selection means is arranged to select the one of the plurality of supply voltages further in dependence on a signal derived from one of the inputs to the combining means.

A process of making an optical film or optical array comprises: a) simultaneously directing a series of gas flows along elongated substantially parallel channels to form a first thin film on a substrate; wherein the series of gas flows comprises, in order, at least a first reactive gaseous material, an inert purge gas, and a second reactive gaseous material; wherein the first reactive gaseous material is capable of reacting with a substrate surface treated with the second reactive gaseous material to form the first thin film; b) repeating step a) a plurality of times to produce a first thickness of a first film layer with a first optical property; wherein the process is carried out at or above atmospheric pressure; c) repeating steps a) and b) to produce a second film layer; and wherein the process is carried out substantially at or above atmospheric pressure.

Crossflow thrombectomy catheter and system for fragmentation and removal of thrombus or other material from blood vessels or other body cavities. High velocity saline jets emitted from a toroidal loop jet emanator or other jet emanator in a catheter distal end entrain fluid through inflow orifices, and with flow resistances create a back-pressure which drives crossflow streams through outflow orifices in a radial direction and thence radially and circumferentially to apply normal and drag forces on thrombotic deposits or lesions in the blood vessel or other body cavity, thereby breaking apart and transporting thrombus particles to be entrained through the inflow orifices, whereupon the high velocity jets macerate the thrombus particles which then transit an exhaust lumen or recirculate again via the outflow orifices.

The present invention provides a hand-held device of the type useful to perform an in vitro immunodiagnostic assay for an analyte of interest. In embodiments of the invention, the device incorporates a carrier for conducting the assay which comprises an array of pads including a sample pad, a narrow detection pad for detecting analyte, and a bridging pad coupled in flow communication therebetween. The device is provided with a housing adapted to deliver sample onto the carrier as a linear band having a width greater than the detection pad. In combination, these features yield a device that retains the sensitivity required for diagnostic accuracy, yet is improved in terms of cost and ease of manufacture.

A damping and sealing device for enabling gas or liquid flow from a well to a production tube in the well, including a body with a flow passage internal to the body and a spring disposed about a portion of the body. The flow passage includes a first opening at a first longitudinal end of the body and a second opening at a second longitudinal end of the body. The first end is arranged to contact a plunger for the well and the body is arranged to sealingly engage the production tube. In one embodiment, the body includes an inner circumferential surface and an outer circumferential surface, the inner circumferential surface forms the internal flow passage, and a portion of the outer circumferential surface is arranged to slide along a portion of the inner circumferential surface in response to the first end contacting a plunger.

The invention relates to a cover and sump assembly for a main drain of a pool or spa that prevents suction entrapment, and specifically, to an assembly having a frame with openings, plates with openings positioned on the frame, and a sump for collecting water and receiving the frame. The assembly reduces the velocity of water flowing there through, uniformly distributes a suction force created by water flowing into the sump, prevents a vortex of flowing water above the assembly, and provides anti-entanglement features to minimize the likelihood of an individual becoming entrapped on the assembly by a suction force produced by a pump in the pool or spa filtering system. The assembly includes a conduit defining an opening along a lower portion thereof that reduces the velocity of flowing water at the suction opening in the sump by reorienting the suction port from a vertical to a horizontal orientation.

A two component system for replacing mitral valves using a transcatheter approach. The first component uses a torus balloon to activate barbs into the mitral annulus after the first component stent frame has been delivered. A closed ring in the first component provides a landing site for delivery of a second component that contains replacement leaflets. The second component straddles the mitral annulus such that impingement upon the left ventricular outflow track does not occur. The second component frame contains open regions that help to prevent blood stagnation.

An engine fuel control system includes a fuel metering valve that controls the flow of fuel between supply and delivery lines which delivers fuel to engine burners. The fuel control system includes a fixed displacement main pump which receives fuel from a low pressure source and delivers the fuel at a first high pressure to the supply line, an augmenter pump which receives fuel from the low pressure source and delivers the fuel at a second high pressure to one or more fuel-pressure operated auxiliary engine devices, and a start valve which is actuated at low engine speeds to open a flow path which diverts fuel delivered by the augmenter pump away from the auxiliary engine devices to the supply line to augment the fuel delivered thereto by the main pump, the start valve being actuated at higher engine speeds to shut the flow path.

An RF filter for an active medical device (AMD), for handling RF power induced in an associated lead from an external RF field at a selected MRI frequency or range frequencies includes a capacitor having a capacitance of between 100 and 10,000 picofarads, and a temperature stable dielectric having a dielectric constant of 200 or less and a temperature coefficient of capacitance (TCC) within the range of plus 400 to minus 7112 parts per million per degree centigrade. The capacitor's dielectric loss tangent in ohms is less than five percent of the capacitor's equivalent series resistance (ESR) at the selected MRI RF frequency or range of frequencies.

This disclosure relates to planning movement of multiple groups over a transport network, for example, but not limited to, the evacuation of persons from geographical zones. A processor receives an initial set of paths for the multiple groups to move through the transport network to respective arrival locations and for each group an initial path to the respective arrival location and an initial departure schedule. The processor then determines based on the initial departure schedules and initial paths one or more critical groups that violate a movement performance threshold and further determines based on the transport network an updated set of paths by adding one or more paths for each critical group to the initial set of paths. Finally, the processor determines for each group an updated path to the arrival location and an updated departure schedule based on the updated set of paths.

This invention relates to a floor construction method and system, and more particularly to a method for producing shallow and ultra shallow steel floor systems.