52results about How to "Minimize leakage" patented technology

A method and device provides features for the temporary “parking” of sutures with respect to a cannula. In the preferred embodiments the features are slots that maintain tension on, and orientation of, sutures placed therein. The slots or features may be integral with the cannula or part of a separate device which may be removably affixed to the external portion of a cannula. The invention eliminates the multiple steps inherent in current suture management techniques for arthroscopic procedures, particularly rotator cuff repair and assists in tensioning/advancement of tissue into its repair site.

A turbine shroud (30) of a gas turbine engine comprises a plurality of arcuate shroud segments (31) combined into an annular configuration, each shroud segment including a main body (32) defining an inner circumferential surface opposing the tips of the turbine rotor blades (11a) at a small clearance and an engagement feature including an axial wall (33a, 34a) having a prescribed circumferential length and a prescribed axial length, the turbine casing including an axial slot (51, 52) extending coaxially around the center line of the engine and configured to receive the axially extending wall of each shroud segment. A clearance defined between each circumferential end part (E) of the axial wall and an opposing inner circumferential surface of the turbine casing is greater than that defined between a circumferentially middle part (M) of the axial wall and an opposing inner circumferential surface of the turbine casing under a cool condition of the engine. A radial temperature gradient that develops in each shroud segment when the engine is warmed causes a deformation of the shroud segment such that the clearance can be made substantially uniform over the entire circumference of the shroud segment and the cooling air leakage can be minimized while minimizing thermal stress that may be caused by the thermal expansion of the shroud segment.

A method for forming a silicon-on-insulator transistor (80) includes forming an active region (82) overlying an insulating layer (122), wherein a portion of the active region provides an intrinsic body region (126). A body tie access region (128) is also formed within the active region, overlying the insulating layer and laterally disposed adjacent the intrinsic body region, making electrical contact to the intrinsic body region. A gate electrode (134) is formed overlying the intrinsic body region for providing electrical control of the intrinsic body region, the gate electrode extending over a portion (137) of the body tie access region. The gate electrode is formed having a substantially constant gate length (88) along its entire width overlying the intrinsic body region and the body tie access region to minimize parasitic capacitance and gate electrode leakage. First and second current electrodes (98,100) are formed adjacent opposite sides of the intrinsic body region. In addition, a body tie diffusion (130) is formed within the active region and laterally offset from the body tie access region and electrically coupled to the body tie access region.

An air seal assembly includes a featherseal engaged between adjacent turbine engine components to close a gap therebetween. The featherseal includes a first lateral tab and a second lateral tab which defines a tab space therebetween. The tab space locks the featherseal into the turbine engine component to prevent fore-aft movement thereof.

Aspects of the invention are directed to systems for reducing the cooling requirements of a ring seal in a turbine engine. In one embodiment, the ring seal can be made of a ceramic material, such as a ceramic matrix composite. The ceramic ring seal can be connected to metal isolation rings by a plurality of pins. The hot gas face of the ring seal can be coated with a thermal insulating material. In another embodiment, the ring seal can be made of metal, but it can be operatively associated with a ceramic heat shield. The metal ring seal can carry the mechanical loads imposed during engine operation, and the heat shield can carry the thermal loads. By minimizing the amount of ring seal cooling, the ring seal systems according to aspects of the invention can result in improved engine performance and emissions.

The present invention provides a packaged cementitious product including a bag formed of a polymeric material. The bag has first and second sealed ends. The first end has a first tab extending therefrom defining at least one aperture therethrough so that the first tab defines a first handle. The second end has a second tab extending therefrom defining at least one aperture therethrough so that the second tab defines a second handle. A cementitious product is sealed within the bag, and wherein the first and second handles facilitate the handling of the packaged cementitious product.

A power converter may employ a planar transformer to minimize winding conduction loss, and the switching devices of the power converter may be aligned in lines parallel to an edge of the planar transformer to minimize the termination leakage inductance. The windings of the planar transformer may be thermally conductively coupled to one or more heat sinks carried by a circuit board which are with respective ones of the switching devices, to provide a cooling path for the planar transformer.

A fuel valve for use in regulating the pattern factor of a gas turbine has a highly accurate pressure balanced clevis valve assembly. The clevis valve is pivotally mounted inside the valve housing by a flexure pivot, and has a pair of legs at each side of a valve body that control flow through pairs of flow orifices. An armature mounts to the clevis valve, and when energized, an electromagnet inside the valve housing generates magnetic flux that moves the armature to pivot the clevis valve to open or closed the orifices. The clevis valve is inherently balanced and can meter fuel through multiple orifices simultaneously.

A refrigerator is provided. The refrigerator includes a cabinet having a first storage chamber, a plurality of doors which open and close an access opening formed at a front surface of the first storage chamber, a hinge assembly which rotatably couples each door to the cabinet, and a basket assembly rotatably coupled to the cabinet with respect to the hinge assembly, the basket assembly being configured to define a second storage chamber which is received in the first storage chamber. The basket assembly includes a basket frame defining the second storage chamber and a basket mounted on the basket frame to receive food stuff when at least one of the doors is opened. The basket assembly is configured such that an access into the basket is enabled through a front face and rear face of the basket assembly.

An improved detergent pouch that is prepared from at least two water-soluble polymeric films, which are sealed together to contain a detergent composition therein, wherein at least one flexibility-imparting agent is mixed with the detergent composition, or coated onto the pouch to prevent leakage and cracking under stress or unfavorable environmental conditions.

In a communication device, the LO leakage and opposite side band signals are measured at an output signal. Input processing signals to a modulator are adjusted in response to the measured values to minimize the LO leakage and maximize side band suppression.

Realtime beam shape adjustment in response to (for example) online CT scanning of a patient during treatment is assisted by the radiotherapy apparatus comprising a source adapted to emit a beam of therapeutic radiation, a collimator for delimiting the radiation beam, the collimator comprising a plurality of leaves arranged alongside each other and be moveable longitudinally so that the tips of the leaves define a variable edge of the collimator, the leaves being mounted on a support that is moveable laterally with respect to the leaves. In this way, movements of the tumour that are perpendicular to the direction of leaf motion can be accommodated by simply moving the collimator bodily so as to accommodate this. It is preferred that the apparatus also includes a control means adapted to receive information as to the location of the target volume, and, on the basis of that information, control the longitudinal positions of the leaves and the lateral position of the support. It is also preferred that the support tilts as it moves laterally along a path. This can be achieved, by example, by bearings that are moveable on suitable guides, or by mounting the support on a plurality of pivot arms of unequal lengths. The lengths of such pivot arms can be adjusted as necessary.

A fuel delivery system is provided with a fuel solenoid valve to minimize fuel leakage and evaporative emissions during diurnal cycles by preventing pressure buildup as the temperature of the fuel system rises. The fuel solenoid valve is located between a pressurized side of the delivery system and a fuel tank. In one embodiment, the fuel solenoid valve is closed when the engine is running or when the engine is off and the rail is hot. When the fuel rail cools down, the solenoid valve opens to bleed a desired amount of fuel thereby creating a fuel vapor space. Thereafter, during hot soak conditions of the diurnal cycles when the fuel rail is hot again while the engine is off, the pressure will rise due to the thermal expansion of the fuel and the created fuel vapor space minimizes further rising of the fuel pressure. Further, by adjusting the solenoid valve opening time, the pressure rising limit may be set at a desired pressure to minimize injector leakage.

A thermal management system includes a cooling duct system that locates a ram air intake and an exhaust through a first aircraft surface above a second aircraft surface which locates a fan intake. During ground operations, an anti-re-ingestion door is open and a ram air door is closed such that the fan system may draw relatively cooler air from below the aircraft and exhaust the heated air above the aircraft to minimize re-ingestion of the heated exhaust. During flight operations, the anti-re-ingestion door is closed and the ram air door is open such that ram airflow communicates through the fan system prior to communication through the heat exchanger. Both the anti-re-ingestion door and the ram air door may also be operated in flight.

A solid oxide fuel cell assembly is disclosed comprising a felt seal and a spacer capable of limiting a compressive force applied to the seal system. Also disclosed is a solid oxide fuel cell assembly comprising a seal system comprising a felt seal, wherein at least a portion of the felt seal defines a cavity in contact with a ceramic electrolyte sheet and wherein the cavity comprises at least one of a solid metal wire, a powdered metal, a sintered metal, a powdered ceramic, a sintered ceramic, or a combination thereof. Also disclosed is a solid oxide fuel cell assembly comprising a labyrinth seal that defines a cavity in which at least a portion of a ceramic electrolyte sheet is disposed. Also disclosed is a mounted ceramic electrolyte sheet comprising a ceramic electrolyte sheet and a metal frame positioned adjacent thereto, and a labyrinth seal.

A bionanochip cartridge for analysis of multiple samples or analytes is provided herein, and the cartridge is dimensioned to take advantage of existing robotic microtiter plate handling equipment. Fluidics are specially designed to provide a small footprint and to prevent cross contamination.

A display apparatus is provided with a panel to display a picture thereon. The display apparatus comprises an inverter to convert DC power into AC power. The display apparatus also includes at least one lamp unit comprising a lamp body and a lamp electrode part provided in at least one of opposite ends of the lamp body to receive an electric power. A transformer is arranged adjacent to the lamp electrode part to boost up a voltage of the electric power output from the inverter to supply the electric power with the boosted voltage as a driving power to the lamp unit.

A throttle valve positioning device is disclosed, The device has a housing with a bearing for a throttle valve shaft and a throttle valve support, within which a throttle valve pivots which sits on the throttle valve shaft, running into a shaft passage in the support. With the device, air leakage may be avoided, such that the periphery of the throttle valve is arranged at a separation from a passage for the throttle valve shaft in. the throttle valve support.

A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, an airfoil having a tip wall that joins outer spanwise ends of a suction sidewall and a pressure sidewall, a tip leakage control channel recessed into an outer surface of the tip wall, a tip leakage control vane integrally formed on the tip wall adjacent to the tip leakage control channel and an air seal radially outward of the tip wall and positioned to minimize leakage at the tip wall.

A coupling for connecting flexible hoses together is provided. The coupling includes male and female fittings both of which include integral shank and quick disconnect coupling portions. The shank portions of the male and female fittings each being insertable at least partially in a respective one of the flexible hoses for securing the fittings to the hoses. The coupling portion of the male fitting including a stem and the coupling portion of the female fitting being configured to receive and non-threadably engage the stem of the male fitting. The coupling portion of the male fitting including a collar movable between locked and unlocked positions such that in the locked position the male and female fittings are securely engaged and in the unlocked position the stem portion of male fitting can be selectively decoupled from the coupling portion of the female fitting.