61results about How to "Avoid sealing effect" patented technology

A thermal barrier for extremely high temperature applications consists of a carbon fiber core and one or more layers of braided carbon fibers surrounding the core. The thermal barrier is preferably a large diameter ring, having a relatively small cross-section. The thermal barrier is particularly suited for use as part of a joint structure in solid rocket motor casings to protect low temperature elements such as the primary and secondary elastomeric O-ring seals therein from high temperature gases of the rocket motor. The thermal barrier exhibits adequate porosity to allow pressure to reach the radially outward disposed O-ring seals allowing them to seat and perform the primary sealing function. The thermal barrier is disposed in a cavity or groove in the casing joint, between the hot propulsion gases interior of the rocket motor and primary and secondary O-ring seals. The characteristics of the thermal barrier may be enhanced in different applications by the inclusion of certain compounds in the casing joint, by the inclusion of RTV sealant or similar materials at the site of the thermal barrier, and/or by the incorporation of a metal core or plurality of metal braids within the carbon braid in the thermal barrier structure.

The present disclosure relates to a liquid crystal display device and a fabricating method thereof. The device includes a thin film transistor formed on a lower substrate, a pixel electrode formed on the lower substrate, a planarization layer formed on an entire surface of the lower substrate, a black matrix formed on the upper substrate, a color filter layer formed on a upper substrate, partition walls formed on the upper substrate and forming a space corresponding to a seal pattern insertion groove, a liquid crystal layer interposed between the lower substrate and the upper substrate, and a seal pattern inserted between the seal pattern insertion groove located on the non-display region of the lower substrate and the upper substrate and the partition walls.

The invention provides a graded metal-ceramic composite containing a metal matrix and ceramic particles dispersed in the metal matrix, wherein the metal matrix is copper, aluminum or copper-aluminum alloy; the ceramic particles are boron nitride, pyrolyzed boron nitride, aluminum nitride or silicon carbide and are in graded distribution in the metal matrix along the longitudinal thickness direction, and the volume fraction is in continuous and gradient change between 10% and 60%. The invention also provides a preparation method of the graded metal-ceramic composite. The graded metal-ceramic composite provided by the invention is proper in heat conductivity and capable of realizing gradient change, and the heat conductivity of the prepared evaporation crucible is correspondingly in graded distribution from the bottom to an opening, so that an organic evaporation material placed in the crucible can be uniformly heated, and an organic film with favorable quality is formed by virtue of evaporation.

The present invention provides a magnetic fluid seal device which enables to avoid the increase of the torque due to the aggregation of the solute of the magnetic fluid or the condition in which it is unable to start. According to the magnetic fluid seal device of the present invention, the hearer 151 is buried in the area where the magnetic fluid seal portion 140 is position inside the shaft 110. The torque meter 171 detects the rotation torque and the starting torque of the shaft 110, and when it is larger than the standard value, the magnetic fluid seal portion 140 is heated via the heater 151 inside the shaft 110. Thereby, the temperature of the magnetic fluid 146 and 147 rises, the solute of the magnetic fluid 146 and 147 is dispersed which lowers the viscosity thereof, and the rotation torque and the starting torque of the shaft 110 is lowered.

An apparatus and a method for expanding a downhole tubular. The apparatus includes a mandrel defining at least one curved support surface. The apparatus further includes an expansion member defining a curved bearing surface for contact with the support surface and corresponding to the mandrel support surface. The expansion member is movable relative to the mandrel, whereby the surfaces are in contact and movable over one another to move the expansion member from a smaller diameter first configuration towards a larger diameter second configuration.

The valve 10 includes a valve main body 11 having an opening 11A and forming a space which creates a part of a gas flow path, a first valve member 12, provided in the valve main body, for opening/closing the opening 11A, and a drive mechanism 40 for moving the first valve member 12 between a close position where the opening 11A is closed and an open position where the opening 11A is opened, wherein the drive mechanism 40 has a rod 14 to be reciprocated, an end of the rod 14 extends into the valve main body 11 through a through hole 11B formed in the valve main body 11 to be connected to the first valve member 12, the first valve member 12 is moved between the close position and the open position as the rod 14 is driven reciprocated, and the valve further comprising a sealing mechanism 15, which communicates into the valve main body 11 via the through hole 11B, for isolating the drive mechanism 40 side air-tightly from the valve main body, and a second valve member 17, provided on the rod 14 to move together with the rod 14 as it is reciprocated, which closes the through hole 11B when the first valve member 12 is situated at the open or close position so as to isolate the sealing mechanism 15 with respect to the valve main body 11.

The present invention provides a rotary joint which is available to maintain a cryogenic supplying refrigerant which flows in a fluid passage by a vacuum thermal insulation so that a cooling portion is cooled certainly. The rotary joint of the present invention comprises a vacuum use cylindrical shaft (10) supported in rotatable condition to an inner circumferential face of a main body having a vacuum passage, a rotary seal ring (1A) fitted to an outer circumferential face with a space and provided with seal faces at both end faces, a stationary seal (2A) ring provided at both sides of the respective rotary seal rings and provided with a counter seal face contacting hermetically with the seal face, a resilient bellows (2B) joint with a circumferential face of end portion of the stationary seal ring to press the stationary ring resiliently to the seal face side, a spaced fluid passage (20B) formed between the respective resilient bellows for passing through the supplying refrigerant by joining with a first fluid passage providing the supplying refrigerant, a second fluid passage (20C) communicating with the spaced fluid passage provided at the rotary seal ring, a connecting fluid passage (20D) communicating with the second fluid passage, a first pipe (20E) communicating through the spaced fluid passage so as to provide the supplying refrigerant to be vacuum thermally insulated in the vacuum use cylindrical shaft to a cooling portion, a connecting cover (42) having a suction bore for vacuumizing in the vacuum use cylindrical shaft and a magnetic fluid seal device (40) having a projection constituted as multiple gaps in the axial direction corresponding to a pressure of the vacuumizing.

An injector comprises a cylindrical body portion, a holding ring capable of centering an axial center of the injector, and a small-diameter cylindrical portion. There are provided an assembly forming step of forming a fuel rail assembly by inserting the injectors into respective cup portions via spring members for reaction force absorption, a press inserting step of pressing and inserting respective tip-side portions of the injectors by pressing pressure-receiving portions such that the respective spring members are compressed up to a middle compressive state thereof with a pressing movable apparatus which is capable of pressing the pressure-receiving portions of a fuel rail via respective pressing springs, and a fastening step of fastening plural boss portions concurrently to a cylinder head in a state in which a pressing force of the press inserting step is maintained.

A hollow seal for use in sealing between relatively movable first and second panels, such as between a fixed window panel and a slidable window panel of a rear window of a pick-up truck or the like. The hollow seal has an internal geometry that supports an outside layer or portion of the seal under pressurization to prevent leakage and seal blowout. The outside portion is shaped to provide a pair of laterally spaced-apart sealing lips that have a pressure-activated sealing geometry for tight sealing against the panels when under pressurization.

Guide grooves are formed in a peripheral sidewall of a soft button, and a hard cap is separably connected to the button by fitting legs on the cap into these guide grooves. Furthermore, when a push-operation member on the cap is pushed, the legs are guided in the guide grooves, while the press stroke of the push-operation member is regulated by the bottom ends of the legs coming into contact with the top face of an inner flange on the case.

A crucible is disclosed. The crucible comprises a first body and a second body. The first body comprises a first cylindric side wall and a crucible bottom connected to the end part of the first side wall. The second body comprises a second cylindric side wall. The upper end of the second side wall is provided with a crucible opening, and the lower end of the second side wall is connected to the upper end of the first side wall. The heat conductivity coefficient of the second body is larger than the heat conductivity coefficient of the first body. A heating part for heating the crucible is usually set on the first body, so that when heat is conducted from the first body to the second body, heat loss can be reduced because the heat conductivity coefficient of the second body is larger, and the temperature at the crucible opening of the second body is higher relatively, thus reducing even avoiding condensation of an evaporation material on the crucible opening so as to reduce a sealing phenomenon. The temperature difference between the crucible opening of the second body and the crucible bottom of the first body is small, so that a material in the crucible is heated evenly and burst explosion phenomena caused by uneven heating are reduced.

The invention discloses a method for electroplating blind holes. The method comprises: providing a circuit board equipped equipped with blind holes with an electroplated metal layer; providing a film provided with an open window opened to the blind holes, wherein the area of the open window is smaller than the cross-sectional area of the blind holes; providing a dry film on the surface of the circuit board; using the film to perform exposure and development on the dry film, enabling the orifice edge of the blind hole to be shielded by the dry film that has been exposed and developed; and electroplating the blind holes after the dry film is exposed and developed. The invention further provides a device for electroplating the blind holes. According to the invention, the bottom copper layer of the blind holes is thickened, the orifice edge of the blind holes is prevented from being thickened, the sealing phenomenon is avoided, and the yield of the circuit board is improved.

An air bag type grouting hole packer comprises grouting pipes and a plurality of annular cloth bags, the annular cloth bags are arranged at intervals and comprises inner walls and outer walls, the outer walls and the inner walls are sealed to form closed spaces, the closed spaces serve as grouting sealing cavities of the annular cloth bags, sections extending along the outer walls and the inner walls of two ends in the length direction of each annular cloth bag form grouting holes communicated with the corresponding grouting sealing cavity, and the grouting pipes sequentially penetrate the annular cloth bags through the grouting holes. By the aid of the annular cloth bags with new structures, the annular cloth bags comprise inner walls and the outer walls, the inner walls enclose through holes for placing gas drainage pipes, the outer walls are arranged outside the inner wall in sleeved manner, so that the grouting sealing cavities formed by the outer walls and the inner walls are uniformly distributed outside the gas drainage pipes, the acting force of the grouting sealing cavities to the gas drainage pipes is uniform after grouting, and damage to the gas drainage pipes is avoided.

The invention discloses a scraper blade with a water-absorbing function and a cleaner using the scraper blade and belongs to the field of cleaning tools. The scraper blade comprises a scraper blade main body; the lower end of the scraper blade main body is configured as a water-absorbing end; the upper end of the scraper blade main body is configured as a water draining end; the water-absorbing end is communicated with the water draining end through a water-absorbing channel; a water absorbing port at the water-absorbing end is configured as an inclined port; a scraper blade for scraping water is arranged on longer side and a lug is arranged on the outer surface of the shorter side; a fixing block which is in sliding fit with the cleaner is arranged on the scraper blade main body; a sliding slot is formed on the cleaner; the upper end of the scraper blade main body and the fixing block are in sliding connection with the sliding slot. The structure of the scraper blade disclosed by the invention is integrally formed in the manner of silica gel injection molding; the technical steps of forming and mounting are saved; the cost is saved; the inclined port is used as the water absorbing port and the lug is arranged for limiting the inclined angle of the water absorbing port in a water scraping process, so that the close suction of the water absorbing port and a to-be-cleaned surface can be avoided and the smooth working process can be guaranteed.

A fluidized bed apparatus for the production and treatment of granules and a method for its operation is provided. The fluidized bed apparatus includes an entry chamber through which a gas is designed to flow upwards; a fluidization chamber for fluidizing the material located above the entry chamber; pivotal slats located between the entry chamber and the fluidization chamber; and a nozzle arm located in the chamber below the slats with a nozzle line ending in a nozzle which is directed into the fluidization chamber through cutouts in the slats and extends partly into the fluidization chamber. The fluidized bed apparatus has rigid nozzle arms and lines which are easily jacketed for heating and cooling applications.

A washing machine capable of protecting a water seal to prevent foreign substance from being stuck or accumulated inside the water seal, so that the water seal is prevented from being worn out. The washing machine includes a tub configured to accommodate wash water, a rotary tub rotatably installed inside the tub, a pulsator rotatably disposed inside the rotary tub, a driving shaft connected to the rotary tub and the pulsator, a support member installed on the driving shaft, a water seal installed between the driving shaft and the tub, and a protection member provided between the support member and the water seal to prevent foreign substance from being introduced into the water seal.

A tapered rotary feed valve is manufactured or refurbished for use in feeding materials into a high temperature environment, so as to reduce the time and expense of break-in operation, by shaping the tapered bore of the valve body at ambient temperature to have greater clearance around the rotor in a sector of the valve body that is cooler when the valve is at stable operating temperature. As a result, when the valve first reaches operating temperature after being manufactured or refurbished the rotor and the bore of the valve body nearly fit and can quickly wear in to fit each other closely.

A discharge lamp of the short arc type in which a lead pin, located within a hermetically sealed tube, is prevented from being irradiated with light. Such a construction prevents the lead pin from undergoing a temperature rise thereby preventing the destruction of the hermetically sealed tube. The discharge lamp of the short arc type includes an arc tube adjoined laterally by hermetically sealed tubes through which a lead pin, which supports an electrode, is routed. The hermetically sealed tubes are sealed by graded glass on the lead pins, and the lead pin is prevented from being irradiated with light by providing the outside surface of the hermetically sealed tube, at least in part, with a high emissivity material and then providing a reflectivity material on the exterior surface of the emissivity material.

A common rail electronic control injection system which uses a DME or a low-viscosity fuel similar with DME to inject into a combustion engine, includes a fuel container, a common rail tube, a high-pressure tube, an electronic control injector, an electronic control unit, a high-pressure pump, a working medium case, a reversing component, and a pressure convertor, wherein the pressure convertor includes at least two working components, each working component is divided into a fuel chamber and a working medium chamber by an dividing element, the dividing element can freely deform or move between the fuel chamber and the working medium chamber by pressure effect. The invention avoids the sealing and abrasion problem in the plunger matching portions which is caused by the low-viscosity fuel so as to greatly improve the lifetime and reliability of system.

A circuit section of a NO_x sensor has an output base including a pedestal portion which projects from a middle part of a support surface of a base portion. A circuit board on which a storage medium storing individual information of the NO_x sensor is mounted is arranged on a mount surface of the pedestal portion. The circuit section has a seal portion which is arranged above the support surface of the base portion, and which covers the circuit board from upper and lateral sides, thereby watertightly sealing the circuit board. The seal portion has an enclose portion which, in a state where the enclose portion protrudes from a peripheral edge of the support surface to a second circumferential side surface of the base portion, encloses the base portion along the peripheral edge.

A lidded container, in particular of the type with a flip-top lid, comprises a blank made from a sheet of laminar material where fold lines and creases define a front panel (2), a rear panel (3), a first side panel (4) and a second side panel (5) that together form a substantially box-shaped structure closed at the bottom. The rear panel has extending upwards from the top of it a flap (15) equipped with a front overlap and side tucks (17, 18) that can be folded and attached to the front overlap to form a lid. The tucks present respective tabs (19, 20) lying inside the lid on the front overlap. The front panel has extending upwards from it a lip (27) that engages with the tabs on the tucks when the lid is snap closed over the front panel.