343results about How to "Reduce leakage" patented technology

A power device includes an active region and a termination region surrounding the active region. A plurality of pillars of first and second conductivity type are alternately arranged in each of the active and termination regions. The pillars of first conductivity type in the active and termination regions have substantially the same width, and the pillars of second conductivity type in the active region have a smaller width than the pillars of second conductivity type in the termination region so that a charge balance condition in each of the active and termination regions results in a higher breakdown voltage in the termination region than in the active region.

A shaft seal having a high abrasion resistance is disclosed, by which the leakage of the gas from the high-pressure side to the low-pressure side can be reduced. In the shaft seal, flexible leaves are multi-layered to form a ring shape. The shaft seal is mainly arranged around the rotation shaft of a gas turbine or the like. The relevant turbine comprises a casing, a compressor, a rotation shaft, moving blades attached to the rotation shaft, and stationary blades attached to the casing in a manner such that the stationary blades face the moving blades, wherein the shaft seals are provided between a plurality of stationary blades and the rotation shaft wherein the leaves of each shaft seal contact the rotation shaft. Under the rated operating conditions, the top ends of the leaves slightly separate from the surface of the rotation shaft due to the dynamic pressure generated by the rotation of the rotation shaft. When the turbine is not operated, the top ends of the leaves contact the rotation shaft again due to the elastic restoring force of the leaves.

This disclosure describes systems and methods for ventilating a patient with a gas mixture containing a low molecular weight gas, such as helium. The disclosure describes a novel proportional solenoid valve for controlling a low molecular weight gas mixture in a medical ventilator with reduced leakage.

A catheter introducer having a catheter hub seal that is engageable with the rear opening of the catheter hub to impede liquid flow out of the catheter hub following catheter insertion and subsequent withdrawal of the needle following separation of the housing from the catheter hub. The catheter hub seal is preferably made of a rubbery material and can be disposed between the housing and catheter assembly or can be attachable to the catheter assembly.

Disclosed herein is a solid-state image pickup device, including: a first pixel for receiving a visible light of an incident light to subject the visible light to photoelectric conversion; a second pixel for receiving the visible light and a near-infrared light of the incident light to subject each of the visible light and the near-infrared light to the photoelectric conversion; a color filter layer; and an infrared light filter layer for absorbing or reflecting an infrared light, and transmitting the visible light.

An improved liquid level sensor is disclosed which provides a reliable and simple device for accurately determining the level of a liquid within a vessel. The sensor of the present invention utilizes a plurality of thermocouples grouped in pairs with the pairs being spaced along a line extending generally in the direction in which the liquid level may vary. A first thermocouple of each pair is located in relatively close thermal proximity to an electrically powered heater and the second of each pair of thermocouples is spaced away from the heater. The thermocouples are connected in series and produce a signal directly indicative of the level of the liquid along the sensor. Additionally, a pressure sensing circuit may also be incorporated with the liquid level sensor.

Disclosed herein are systems and methods for the administration of drugs and/or medications to a patient. Systems and methods of the present invention are useful for achieving the non-invasive administration of drugs and/or medications, typically via a nebulization chamber in combination with an airtight face mask. Within certain embodiments, the present invention further employs a filtration device to scavenge drugs and/or medications that would otherwise escape into the patient's immediate surroundings.

In a failure diagnostic system for a fuel vapor processing apparatus, a processing flow path comprising a vapor line, a canister and a purge line is closed with a vapor control valve and a purge control valve. The interior of the processing flow path is reduced in pressure or pressurized by rotating an air pump of a pump module in a forward or reverse direction. An electronic control unit (ECU) closes the vapor control valve and the purge control valve to close the processing flow path after stop of the engine and, when the fuel temperature detected by a temperature sensor is lower than a predetermined value, reduces the internal pressure of the processing flow path through an air pump, then checks air-tightness of the interior of the processing flow path based on behavior of a vapor pressure detected by a pressure sensor. The ECU closes the processing flow path and, when the fuel temperature detected is not lower than the predetermined value, pressurizes the interior of the processing flow path through the air pump, then checks air-tightness of the processing flow path based on behavior of a vapor pressure subsequently detected.

A seal body includes an annular, axially extending portion; a radially extending portion defining a primary seating surface, and cooperating with the axially extending portion to define a generally L-shaped cross section; and at least one annular axially-extending seal tooth.

The utility model discloses a method of realizing single sign on for portal website and an IMS client side, which adopts the technical proposal that: after a user signs on the IMS client side, the authentication request of the user is sent to a authentication portal of portals which is the same as of the IMS client side in authentication information using a portal website address and an access branch which are pre-configured in own configuration file by the IMS client side; after the returned authentication response of the authentication portal is received, the user password is encrypted before sent to the authentication portal for authenticating; if the authentication passes, the returned authentication of the portals is written into the cookie area of a web browser through the cookie information; the IMS client side comprises a firstly authenticating module and an encrypt module. The utility model solves the problem that the authentication information needs to be written into again when the portal website is the same as the IMS client side in the authentication information is needed to be signed on after the IMS client side is signed on. The utility model also decreases the possibility of the user information leakage at the same time.

A light guide plate (63) includes a light introducing section (65), which is at a position facing a point light source (62), for confining light from the point light source, and a light guide plate main body (64), which has a thickness smaller than a thickness at an end of the light introducing section on the point light source side, for outputting the confined light to an outside from a light outputting surface by light outputting means (70). The light introducing section (65) has an inclined surface (67), which is inclined from a surface of the light introducing section towards a surface of the light guide plate main body (64). The inclined surface (67) has a directivity converting pattern (68) for converting a directivity expansion in a thickness direction of the light guide plate of the light entered to the light introducing section (65) to directivity characteristics tilted towards a direction parallel to a surface direction of the light guide plate. The directivity converting pattern (68) has a structure in which a plurality of V-shaped groove structures (68a) are lined.

An absorbent garment has a garment chassis, a pair of inner containment flaps and a pair of outer containment flaps. The inner and outer containment flaps are arranged on the garment chassis to inhibit leaking of body exudates from the garment during wear. In one embodiment, the inner containment flaps each have an elastic tension as determined by an elastic tension test which is substantially equal to an elastic tension of each outer containment flap as determined by the same test. In another embodiment, the inner containment flaps each have a height which is substantially equal to a height of each outer containment flap.

The invention relates to magnesium-oxygen cement slurry used for reservoir water plugging, leak plugging and temporary-closure plugging in an oil and gas well and a preparation method thereof. The cement slurry contains the following components in parts by weight: 100 parts of active magnesium oxide, 50-105 parts of water, 30-100 parts of water-soluble blending agent, 0.5-10 parts of water-soluble borate, 1-8 parts of carbohydrate retarding agent, 0-400 parts of acid-soluble hard filling material, 1-5 parts of fluid loss agent, 0-5 parts of foaming agent and 0-2.5 parts of foam stabilizing agent, wherein the active magnesium oxide is obtained through roasting magnesium carbonate or magnesium oxide at high temperature; the water-soluble blending agent is a mixture which is one or over two of sodium pentaborate, sodium tetraborate and disodium octaborate tetrahydrate; the carbohydrate retarding agent is a mixture which is one or over two of sucrose, lactose and glucose; and the acid-soluble hard filling material is calcium carbonate or magnesium carbonate. According to the invention, a magnesium-oxide cement stone is removed from a stratum layer by using an acidizing way; the damageto the stratum layer is low; and the wide practical value is achieved.

The present disclosure relates to personal care products such as diapers, training pants, feminine care articles, incontinence articles, bandages, and the like, that have been treated to enhance liquid intake and distribution performance characteristics and reduce leakage. Advantageously, the treated personal care products described herein not only reduce the viscosity and elasticity of viscoelastic fluids that come in contact with the treated product, but also reduce the fouling effect of such fluids.

An expandable device (1100) can be configured to occlude an ear canal to isolate an ear canal volume from an ambient environment. The expandable device includes a support structure (1102). A membrane having a proximal end and a distal end is attached at each end around the support structure (1102) forming an expandable element (1104). The expandable element (1104) has an expanded state and an un-expanded state. The expandable element is adjacent to the support structure (1102) in the un-expanded state. The expandable element (1104) in the un-expanded state minimizes an insert profile of the expandable device (1102).

A stratified gate dielectric stack includes a first high dielectric constant (high-k) gate dielectric comprising a first high-k dielectric material, a band-gap-disrupting dielectric comprising a dielectric material having a different band gap than the first high-k dielectric material, and a second high-k gate dielectric comprising a second high-k dielectric material. The band-gap-disrupting dielectric includes at least one contiguous atomic layer of the dielectric material. Thus, the stratified gate dielectric stack includes a first atomic interface between the first high-k gate dielectric and the band-gap-disrupting dielectric, and a second atomic interface between the second high-k gate dielectric and the band-gap-disrupting dielectric that is spaced from the first atomic interface by at least one continuous atomic layer of the dielectric material of the band-gap-disrupting dielectric. The insertion of the band-gap disrupting dielectric results in lower gate leakage without resulting in any substantial changes in the threshold voltage characteristics and effective oxide thickness.

The present invention has an object to provide a novel water-swellable crosslinked polymer composition which exhibits excellent saltwater absorption speed and capacity under a load. This object can be achieved in the case where, in a water-swellable crosslinked polymer composition comprising a blend of water-swellable crosslinked polymer particles of basicity in water and water-swellable crosslinked polymer particles of acidity in water, the water-swellable crosslinked polymer particles of basicity in water are unified with the water-swellable crosslinked polymer particles of acidity in water through ionic bondings in a state where water is present between the particles, wherein the ionic bondings are formed in a state where water is present between the particles by neutralization of at least part of acid groups of the water-swellable crosslinked polymer particles of acidity in water with the water-swellable crosslinked polymer particles of basicity in water.

A semiconductor device includes a first insulating layer, a capacitor, an adhesive layer, and an intermediate layer. The first insulating layer may include a first insulating film. The first insulating layered structure has a first hole. The capacitor is disposed in the first hole. The capacitor may include bottom and top electrodes and a capacitive insulating film. The capacitive insulating film is sandwiched between the bottom and top electrodes. The adhesive layer contacts with the bottom electrode. The adhesive layer has adhesiveness to the bottom electrode. The intermediate layer is interposed between the adhesive layer and the first insulating film. The intermediate layer contacts with the adhesive layer and with the first insulating film. The intermediate layer has adhesiveness to the adhesive layer and to the first insulating film.

The invention relates to a self-tightening sealed optical glass window of a constant volume comb, belonging to the field of the constant volume bomb designing and sealing technology. The optical glass window concretely comprises an end cover, a sleeve, optical glass, a bolt, a first sealing gasket and a second sealing gasket. The end cover comprises an observation hole, a cylindrical ring convex end surface, a screwed hole end surface, an optical glass counter bore seat end surface and an outer edge, wherein the optical glass counter bore seat end surface of the end cover is sequentially provided with the first sealing gasket, the optical glass and the second sealing gasket, and the centers of the four are coaxial; the sleeve is arranged at the other end of the second sealing gasket, and covers the optical glass and the second sealing gasket; a through hole of the sleeve is aligned with the screwed hole of the screwed hole end surface of the end cover; and the optical glass is compacted through bolt fixing so as to form an initial sealing condition. According to the invention, a self-tightening sealed manner is adopted, which has a better sealing effect under an environment with a higher pressure; the mounting time of the optical glass is reduced; the problems that the optical glass is damaged and the sealing gaskets are replaced often are solved; and meanwhile, the sealing performance of the constant volume bomb is remarkably improved.

A nitride-based FET device that provides reduced electron trapping and gate current leakage. The device includes a relatively thick passivation layer to reduce traps caused by device processing and a thin passivation layer below the gate terminal to reduce gate current leakage. The device includes semiconductor device layers deposited on a substrate. A plurality of passivation layers are deposited on the semiconductor device layers, where at least two of the layers are made of a different dielectric material to provide an etch stop. One or more of the passivation layers can be removed using the interfaces between the layers as an etch stop so that the distance between the gate terminal and the semiconductor device layers can be tightly controlled, where the distance can be made very thin to increase device performance and reduce gate current leakage.

An airfoil suitable for being arranged in a compressor section of the gas turbine includes a platform, a pressure surface and a suction surface, and a tip region. The tip region is located between the pressure and the suction surface opposite to the platform in respect of the pressure and the suction surfaces, being a distant end of the airfoil in direction along the first direction perpendicular to the platform. The tip region includes a first surface with a first distance to the platform along the first direction, and a second surface with a second distance to the platform along the first direction. The first distance is greater than the second distance and the first surface and the second surface together build a profiled surface. The profiled surface is a ribbed surface. The material of the first surface is deformable to bend away from the rotation direction of the airfoil.

The invention provides a backlight module and a display device. The backlight module comprises a light source, a light-guide plate and a reflection layer. The light-guide plate is provided with a light-incident surface, a first light-emitting surface, three light-leaking surfaces and a second light-emitting surface parallel to the first light-emitting surface. The light source and the light-incident surface are correspondingly arranged. The reflection layer and the second light-emitting surface are correspondingly arranged. The backlight module further comprises light conversion layers arranged on at least one light-leaking surface and used for converting emergent light emitted from at least one light-leaking surface to white light. As a result, the color of emergent light emitted from at least one light-leaking surface is turn into white through color complementation such that leakage of blue light of the backlight module is effectively reduced. It is ensured that a large amount of light emitted from the first light-emitting surface of the light-guide plate is blue light. Blue light is further converted into white light so that luminance and color uniformity of the backlight module are improved.

The invention discloses an olefin-typed compound shape-stabilized phase change material and a preparation method thereof; the olefin-typed compound shape-stabilized phase change material is prepared by the following methods: (1) according to the mass percentage, 81-99.5 percent of olefin, 0.5-10 percent of polyol acetal compound and 0-9 percent of high density polyethylene are weighed and taken; (2) the polyol acetal compound and the high density polyethylene are added to the olefin, heated and mixed till being completely dissolved to prepare the mixture; and (3) the mixture is poured in a die, naturally cooled and taken out of the die. The olefin-typed compound shape-stabilized phase change material uses the olefin as the heat-storage material, and takes the spatial network structure formed by small molecule gelator as the supporting material of the olefin; furthermore, the high density polyethylene is added or not added as the supporting material, thus obtaining the shape-stabilized phase change material which has low leakage, high transformation enthalpy, low preparation cost and excellent application performance.

A display device and a backlight module thereof are provided. The display device further includes a display panel having a display area. The backlight module is disposed under the display panel and includes a light source holder, a light source, and a light guide plate. The light source holder has a sidewall, a top plate, and a bottom plate, wherein the bottom plate partially overlaps the display area of the display device. The light guide plate is disposed corresponding to the display area of the display device and has one end located in an opening between the top plate and the bottom plate. A thermal isolating layer is interposed between the light guide plate and a portion of the bottom plate which corresponds to the display area. The perpendicular distance between the light guide plate and the portion of the bottom plate overlapping the thermal isolating layer is greater than a perpendicular distance between the light guide plate and the other portion of the bottom plate.

In the brushless motor, a magnetic recording disk is to be mounted on a hub. A base plate rotatably supports the hub on the upper surface. A laminated core is fixed on the upper surface of the base plate and has a ring portion and a plurality of teeth that extend radially from the ring portion. Coils are wound around the plurality of teeth. A cylindrical magnet is fixed to the hub and is magnetized for driving with a plurality of poles along the circumferential direction and is arranged to radially face the plurality of teeth of the laminated core. A wire of one end of one of the coils is drawn out to the bottom surface of the base plate through a hole arranged on the base plate. The wire is connected to a driving line for supplying a current to the coils at a position other than the position of the hole on the base plate. The hole of the base plate is plugged with a resin.

The invention particularly relates to a hydraulic cylinder with a clearance sealed type deformed piston, which adopts the following technical scheme that: an excircle of a piston [5] is uniformly and symmetrically provided with 3 to 5 balance slots [6]; a piston rod [18] of the piston [5] is provided with a first seal groove [7]; an annular boss of which the outer diameter is the same as that of the piston [5] is arranged on the end faces of two sides of the piston [5] respectively; an excircle of a guide sleeve [11] is provided with a second seal groove [16]; a first drain pan [14] and a second drain pan [17] are arranged on an inner circle and the excircle of the guide sleeve [11] respectively; the first drain pan [14] is communicated with the second drain pan [17] through a second oil drain channel [13]; the second drain pan [17] is communicated with a first oil drain channel [12] arranged on a cylinder body [1]; and an end face, close to the inner circle, of the inner side of the guide sleeve [11] is provided with am annular groove. The hydraulic cylinder has the characteristics of simple structure, convenient assembly and disassembly and maintenance, long service life, small friction, high frequency response, high reliability, external leakage prevention, and the like.

The invention relates to a medicine composite for treating vaginitis, comprising main medicine, matrix, bio-adhesive material, release rate regulator and other additives. The medicine composite for treating vaginitis has special bioadhesive and longer keeping time, reduces medicine leakage, prolongs contact time of medicine and vagina mucosa and ensures curative effect; the composite has special vagina slow release performance and can continuously release medicine for 2-7 days; compared with common preparation, the medicine composite prolongs medicine release time and can reduce medicine application times, thus bringing convenience for patients to apply the medicine. Meanwhile, because the medicine composite has the characteristics of bioadhesive and long efficiency of slow release and has no requirements for medicine application time, thus medicine application can be carried out at any time.

A magnetic liquid sealing device with pole shoes being provided with high teeth and low teeth. Positioning rings (5), left bearings (6), left magnetic separation rings (7), magnetic liquid sealing assemblies, right magnetic separation rings (13) and right bearings (14) are sequentially arrayed in outer covers (1). After magnetic liquid (17) is injected into inner rings of magnets (10), shaft sleeves (3) are arranged in inner holes of the above parts, then screws (20) are used for fixing end covers (18) on the outer covers (1), the outer circles of the right bearings (14) are compressed, and the end covers (18) and the shaft sleeves (3) are connected by screws (19). The characteristic that pole teeth are arranged on a common magnetic liquid sealing upper pole shoe is utilized, and pole teeth which are originally arranged on a magnetic liquid seal are replaced by high teeth in a labyrinth seal. The magnetic liquid sealing device with the pole shoes being provided with the high teeth and the low teeth is simple in structure, the impact resistance of the magnetic liquid seal is improved, and the magnetic liquid seal is made to be used in certain the severe proof pressure environments where pressure can be increased suddenly and sharply.

Materials based on low melt polyimide, polyurea, or polyurethane chemistry have been developed which exhibit self-healing properties. These high performance polymers can be utilized either by themselves or in combination with microcapsule technology to deliver self-healing properties to electrical wire insulation or in other high performance, thin wall technologies such as inflatable structures.

A microfluidic device includes a microfluidic chip and an ultrasonic stator. A holding portion is formed at the ultrasonic stator to hold the microfluidic chip. The microfluidic chip is formed of a substrate with a very small channel, and a valve is provided movably in the channel. The cross section of an upstream portion of the channel is larger than that of a downstream portion. When the valve is moved to the downstream side, the valve closes and decouples the downstream portion of the channel. When the valve is moved to the upstream side, the upstream and downstream portions of the channel are coupled. The valve is moved by a traveling wave generated by the ultrasonic stator, and the traveling wave is transmitted to the substrate via the holding portion.