100results about How to "Prevent from flow" patented technology

A converter circuit providing multiple current bypass routes between the output leads to provide reliability in a series connection of several converters. If the converter malfunctions due to component failure, the current bypass routes provide a path for the current that views the malfunctioning converter as substantially a short. Diodes prevent backflow into the power source connected to the converter. Redundancy is provided in the bypass portions of the converter circuit that provides alternate parallel paths in case a defective component in one of the paths opens the circuit along that path. In one example, the converter is implemented as a buck plus boost converter where either the buck or the boost portion or both are operative responsive to a controller controlling the switches of both portions. Most of the converter circuit may be implemented in an integrated circuit.

A substrate holder (20) for supporting a substrate (30). A heating component (50) is positioned adjacent to a supporting surface and between the supporting surface and a cooling component (60). A fluid gap is positioned between the cooling component and the heating component, the fluid gap configured to receive a fluid to increase thermal conduction between the cooling component and the heating component. A brazing material is disposed between the cooling component and the heating component, the brazing material disposed adjacent to the fluid gap.

Polymeric bags with pressure relief valves having improved sealing and venting properties are described. Generally, the disclosed bags have opposing body panels connected along a pair of sides, a bottom bridging the sides, reclosable fasteners extending along mouths formed opposite the bottoms, and pressure relief valves attached to one of the body panels. The valves are positioned adjacent a pressure relief opening defined in a body panel of the bag and include a cover member that covers the opening. The cover member includes an upper layer and a lower layer, in which the upper layer is hingedly connected at a first end to the lower layer. The lower layer includes a first portion attached to the body panel and a second contiguous portion not attached to the body panel for relative movement therebetween. The first end of the upper layer is connected to the second portion of the lower layer. Additional aspects include a seal line extending proximate the pressure relief opening to contour a dimple in the bag during operation of the pressure relief valve and surface modifications to enhance sealing of the pressure relief valve when closed.

Various embodiments address various difficulties with source side sensing difficulties in various memory architectures, such as 3D vertical gate flash and multilevel cell memory. One such difficulty is that with source side sensing, the signal amplitude is significantly smaller than drain side sensing. Another such difficulty is the noise and reduced sensing margins associated with multilevel cell memory. In some embodiments the bit line is selectively discharged prior to applying the read bias arrangement.

An apparatus for batch processing of a wafer is disclosed. In one embodiment the batch processing apparatus includes a bell jar furnace having a diffuser disposed between gas inlets and the substrate positioned within the furnace to direct flows within the chamber around the perimeter of the substrate.

An electrical connector assembly, such as for use with a tractor-trailer, comprises a socket and a plug. The plug can comprise a resilient seal configured to surround mating electrical terminals on the socket and the plug. A coupler can be configured to retain the plug in the socket and compress the resilient seal against the socket. The plug can further comprise a knob having a bulbous portion sized to fit in a palm of a user's hand for ease of grasping by the user. The knob can include a drip edge.

A liquid container includes, in a container body 3, an ink containing portion 5, an ink supply.portion 7, an ink leading path 9 for leading an ink stored in the ink containing portion 5 to the ink supply portion 7, and an atmosphere communication port 4, and an ink end sensor 11 for detecting an inflow of a gas to the ink leading path 9, thereby detecting that a residual amount of the ink in the ink containing portion 5 is zero is provided in the middle of the ink leading path 9, and furthermore, an air bubble trap passage 13 for catching air bubbles mixed in the ink is provided in the ink leading path 9 between a detecting position of the ink end sensor 11 and the ink containing portion 5.

The flow of resin during the molding of composite articles is controlled by forming areas of immobilized resin during the infusion of resin into the fibrous body. The immobilized resin is formed using an immobilization agent that interacts with the infused resin to form a high viscosity resin barrier that is effective in blocking the flow of non-immobilized resin. The barriers of immobilized resin are located within the fibrous body so as to control the flow of non-immobilized resin during the molding process to prevent or least reduce resin depletion and to selectively block resin flow from the mold.

A spring brake chamber assembly. In one embodiment, the spring brake chamber assembly includes a housing having a first housing and a second housing separated by a divider wall, each of the first housing and the second housing having a wall; a first diaphragm configured to be positioned in the first housing to divide the first housing into a breathing chamber and a pressurized chamber, and reciprocally movable therein between a first position and a second position in response to the introduction and / or exhaustion of compressed air to the pressurized chamber; a second diaphragm configured to be positioned in the second housing to divide the second housing into a ventilation chamber and a brake chamber, and reciprocally movable therein between a first position and a second position in response to the introduction and / or exhaustion of compressed air to the ventilation chamber; and a flow control member passing through the pressurized chamber and extending between the breathing chamber and the ventilation chamber for selectively controlling the flow of air between the breathing chamber and the ventilation chamber, where the wall of the breathing chamber is sealed such that no air directly flows through between the breathing chamber and the atmosphere, and the breathing chamber is in fluid communication with the ventilation chamber through the flow control member.

A honeycomb structure of the present invention is a honeycomb structure 1 including: a cell structural part 2 including a plurality of cells 6 partitioned by partition walls 4 in a honeycomb shape to form flow paths allowing a fluid to flow therein; and an outer wall 3 disposed on an outer peripheral surface 7 of the cell structural part 2, characterized in that an outermost peripheral cell 9 of the cell structural part 2 and a predetermined number of cells positioned in an inner direction from the outermost peripheral cell among the cells 6 are sealed by an inner peripheral surface of the outer wall 3 in an end portion and / or an intermediate portion of at least one of the outermost peripheral cell and the outer peripheral cell in a central axis direction to constitute shielded cells 11, a temperature rising time of the cell structural part 2 after start of an operation shortens, and a catalytic activity can be enhanced in a short time when a catalyst is supported.

A system and method are disclosed for automatically limiting the drainage of a bodily fluid such as cerebrospinal fluid (CSF) from a patient into a collection chamber. The collection chamber includes a vent having an hydrophobic filter for the passage of air to facilitate the movement of CSF yet to maintain a closed system. The system includes a buoyant float hingedly connected with the top of the collection chamber in one embodiment. When fluid rises in the collection chamber to a predetermined volume, buoyant force raises the float and causes a seal plug mounted on top of the float to seal one of an inflow port or a vent port. The float is limited to pivoting movement in one plane and to a certain angle within that plane. The system and method avoid overdrainage of CSF from the patient and overfilling of the collection chamber.

The invention relates to power cable comprising, at least one HTS-tape and a cooling system comprising a fluid cooling medium for cooling the at least one HTS-tape. The at least one HTS-tape being at least partly surrounded by a cooling layer comprising said fluid cooling medium and an electrical insulation at least partly impregnated with said fluid medium.The power cable of the invention has shown to reduce the risk of fault current and electrically breakdown. When extra cooling is needed for stable operation the cooling medium may evaporate in the cooling layer for providing the cooling.

A package-on-package assembly includes first and second packages and an adhesion member positioned between the first and second packages and adhering the first and second packages to one another. The first package may include a first substrate having a first surface and a second surface facing each other and including a land pad formed on the first surface, a first semiconductor chip formed on the first surface, and a first encapsulant member encapsulating the first surface and the first semiconductor chip and including a through-via spaced apart from the first semiconductor chip and exposing the land pad and a trench formed between the first semiconductor chip and the through-via, and wherein at least a portion of the trench is filled with adhesion member material.

A wringer for use with wet mops is disclosed. The wringer includes a body having a plurality of side surfaces and at least one perforated section. A filter is disposed adjacent to the perforated section, so that fluid exiting the container through the perforated section will pass through the filter. The filter may be secured to the wringer by slots formed in the wringer body, or with pins, clips or any other similar attaching means. The filter removes dirt and other contaminants from cleansing fluid used with the mop, lengthening the useful lifetime of the cleansing fluid before replacement is needed. The wringer may also have an attachment member to allow the wringer to be used with a bucket or may be formed integrally with a bucket.

A catheter insertion assembly for inserting a catheter into a body lumen of a patient is disclosed as well as a method of using the assembly. The assembly comprises a hub, a catheter stiffener and a valve. The hub has a proximal end, a distal end and a lumen connecting the proximal and distal ends. The valve is disposed in the lumen of the hub and prevents substantially all fluid flow through the lumen in at least one direction below a pressure threshold. The stiffener comprises a proximal end, a distal end and a central lumen. The proximal end of the stiffener is attached to the hub and the stiffener extends distally of the distal end of the hub, and the stiffener lumen is in fluid communication with the hub lumen. The stiffener occupies a lumen of the catheter and provides additional stiffness to the catheter such that a catheter introducer is not necessary for insertion of the catheter.

A heating system can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel flowing into the feature. These features can include, fuel selector valves, pressure regulators, burner nozzles, and oxygen depletion sensor nozzles, among other features.

Various sealing structures are used in a front-loading injector, for preventing leakage of spilled fluid from an external surface of a syringe into the vicinity of the drive ram. For example, a sealing gasket may be incorporated into the front face of the injector housing, for mating to the rearward circular edge of the cylindrical body of a syringe. Alternatively, sealing and locking functions may be performed by a single structure on the rearward end of the syringe. Further, leakage may be prevented by including a non-planar sealing flange on the syringe, positioned on the syringe forward of the locking structure, or by a two-piece structure, including a syringe and a separate leakage stopping washer for surrounding the syringe to halt the flow of fluid along the exterior of the syringe. As part of this aspect, or as an independent feature, the syringe may include an annularly discontinuous flange forward of the locking structure, for providing mechanical support for the syringe against the injector. Alternatively, an iris-like structure may be incorporated into the front surface of the injector, for closing about the syringe upon insertion of the syringe into the injector.

A yard hydrant having a valve body with a valve seat and a drain port. A closure valve disposed within the valve body and engaging the valve seat. The valve body having a conduit in fluid communication with the drain port and a hollow interior of the valve body. A check valve disposed within the conduit to prevent fluid flow from the drain port through the conduit to the hollow interior.

In a switching power supply circuit, completion of discharging of a capacitance provided in a soft-start circuit requires a period longer than a cycle with which an activating / deactivating portion switches switching control operation of a driving portion (which performs switching control to turn on / off a switching device provided in a stepping-up DC-DC converter) between an activated state and a deactivated state. Moreover, the soft-start circuit is prevented from performing soft-start operation until discharging of the capacitance is completed. Furthermore, the activating / deactivating portion prevents the switching control operation of the driving portion from being switched from the deactivated state to the activated state from a time point that constant voltage feeding operation of a constant voltage portion (which feeds, to a comparing portion that sends an output signal to the driving portion, a constant voltage as the drive voltage) is switched from the deactivated state to the activated state until a predetermined period elapses.

A flow control system is provided for a horizontal well production system having a casing, a tube having an intake opening and disposed within the casing, and a gap formed between the casing and the tube. The flow control system includes a valve having an orifice, coupled to the tube and disposed proximate to the intake opening. The flow control system further includes an actuator coupled to the valve and configured to open the valve in response to a presence of a liquid in the gap, proximate to the intake opening, to permit flow of the liquid into the tube via the intake opening, and to close the valve in response to a presence of a gas in the gap, proximate to the intake opening, to prevent flow of the gas into the tube via the intake opening.

A respective electronically controlled switch is provided in series with the output of each PD. A control circuit having a timer functionality is further provided, with the electronically controlled switches responsive to the control circuit. Upon detection that a second PD, defined temporally, is provided with operating power, the respective electronically controlled switch is maintained open for a predetermined hold-off time period sufficient to ensure detection by the respective PD control state machine of the completion of startup. After expiration of the predetermined hold-off time period, the respective electronically controlled switch is closed thus enabling normal operation.

A PTC element comprising a PTC element body containing a polymer matrix and conductive particles, a pair of electrodes in contact with the PTC element body, and a protective layer composed of a cured epoxy resin composition containing an epoxy resin and a thiol-based curing agent, and covering the PTC element body so as to seal the PTC element body.

The present invention may provide an automatic oil-change system for an engine comprising: a first oil container, a second oil container and means for switching between the first oil container and the second oil container. The switching means may provide the engine with oil from the first oil container until a predetermined time and once a predetermined time is reached, the switching means may provide the engine with oil from the second oil container.

A system for detecting leaks and occlusions in a cryoablation catheter requires monitoring pressure in the catheter at the end of two predetermined time intervals. The catheter includes a catheter tube, a cryo-chamber at the distal end of the catheter, and a supply line for introducing fluid refrigerant into the cryo-chamber. Also included is a pressure sensor mounted in the cryo-chamber for measuring a tip pressure. During the first time interval, fluid refrigerant is prevented from flowing through the catheter while the catheter is evacuated by a vacuum pump. The tip pressure is then measured to detect leaks. During the second time interval, fluid refrigerant is introduced into the cryo-chamber while evacuation continues, and the tip pressure is measured to detect occlusions.

A valve stem is mounted in a nozzle body, with the valve stem moving from an open position retracted from the injection orifice permitting the flow of resin to the mold cavity, to a closed position blocking the injection orifice and preventing the flow of resin to the mold cavity, and to an advanced position within the gate nub area to assist in the ejection of a molded part and clear the gate nub area.