1164 results about "Water tightness" patented technology

An adaptive underwater camera housing and control interface for use with a broad range of camera brands and models. The camera housing is preferably formed of front and rear housing sections that are molded of clear transparent plastic and arranged to be moved between an open position for mounting a camera within the housing and a closed position in which the housing provides a watertight enclosure for protecting and communicating with a camera. Residing in the housing are a controller and communications interface by which a camera can be operated from outside the housing. Magnetic signals are preferably passed to the controller by external signal buttons operated by the user. The external signal buttons do not penetrate the interior surfaces of the housing thereby enhancing its water tightness. The housing is provided with a truncated hemispherical lens through which a camera views scenes to be photographed to reduce distortion and not foreshorten viewing angle and a flat window and diffuser for providing controlled artificial illumination to a scene.

Specially configured synthetic boards are provided for use with conventional carpentry tools and techniques to form flat, water-tight surfaces such as decks, roofs, walls, boat decks, hulls, and the like. The boards are formed to their desired shape and scale by extruding mixtures of wood particles and thermoplastic materials through appropriate converging dies. In one configuration, the edges of the boards have complementary configured outwardly facing recesses that permit them to be joined to form the watertight surfaces, and in another configuration the boards have features that interact with separate plastic structures to provide water tightness.

The invention provides water-borne acrylic water-proof heat insulating paint, which belongs to the field of building materials and can be applied to surfaces of building roofs, metal sheets, ceramic tiles, glazed bricks, decorative tiles and other materials. The invention provides the water-borne acrylic type water-proof heat-insulating paint by using copolymer latex which is cool mixed by elastic acrylic copolymer emulsion, VAE emulsion and an organic silicon water-proof material as a base material, and hollow glass beads in low heat conductivity, hollow ceramic beads and other heat insulating materials, titanium powder, zinc oxide, ultrafine mica and other reflecting materials, and corrosion-resistance blanc fixe, wollastonite and the like as pigments. In the paint, the solar reflectivity is more than or equal to 0.83, the semi-sphere reflectivity is more than or equal to 0.85, weather resistance aging time is 100 hours without fading or pulverizing, and water-proof performance, such as water tightness, low temperature flexibility, tensile strength and the like, can achieve II type product index requirement of JC / T864-2008. Besides the function of decorating materials, the paint has the functions of water proofing and heat insulation.

A fluid feeding system consists of a flow channel member and a fluid feeding apparatus. The flow channel member has at least a flow channel for feeding a fluid to a sensor surface. Pipette catchers are formed at inlet and outlet openings of the flow channel. The fluid feeding apparatus comprises a movable pipette head having a couple of pipettes, a head moving mechanism and pumps for sucking and ejecting the fluid through the pipettes. To inject the fluid into the flow channel, ends of the pipettes are pressed onto the pipette catchers. The pipette catchers are formed from a soft material, so that they are deformed resiliently when the ends of the pipettes are pressed onto the pipette catchers, thereby ensuring water-tightness between the pipettes and the flow channel, without the need for fitting the pipettes in the inlet and outlet openings.

The present invention relates to textile sheetlike constructions having an enhanced watertightness and also to a process for producing them. It was found that, surprisingly, the watertightness of porous textile sheetlike constructions is enhanced when a coating of hydrophobic particles having an average particle size in the range from 0.02 to 100 μm is applied to the surfaces of the fibers. The textile sheetlike constructions can be used for example as textile building materials or for producing tents, umbrellas or the like.

The invention belongs to the field of tunnel engineering, and in particular relates to an in-line water tightness testing device for an elastic sealing gasket of a shield tunnel, which simulates the waterproof capacity of a waterproof sealing gasket of segment joints of the shield tunnel in a straight joint erecting state. The device of the invention comprises two abutted rectangular cover plates, wherein an air outlet hole and a water inlet hole are arranged on the cover plates; corresponding rectangular grooves are arranged in the central positions of the abutted surfaces of the two cover plates; the two cover plates are fastened and abutted by bolts distributed on the peripheries of the cover plates; and a spacing plate is installed laterally on the cover plate. The invention has the advantages that the device of the invention can precisely verify the waterproof capacity of the elastic sealing gasket under the conditions of different opening value of segments and different dislocation, thus the evaluating system of the waterproof capacity is more precise.

The present invention relates to textile sheetlike constructions having an enhanced watertightness and also to a process for producing them. It was found that, surprisingly, the watertightness of porous textile sheetlike constructions is enhanced when a coating of hydrophobic particles having an average particle size in the range from 0.02 to 100 μm is applied to the surfaces of the fibers. The textile sheetlike constructions can be used for example as textile building materials or for producing tents, umbrellas or the like.

Provided are an apparatus and method for opening and closing a window by slidably moving a movable window sash or door (hereinafter collectively called a ‘movable window sash’) with respect to a fixed window sash or door (hereinafter collectively called a ‘fixed window sash’). The apparatus is designed such that the movable window sash cannot only slide along a rail mounted within a blank frame but also be separated from a roller to move back and forth from any position on a rail toward the blank frame or the fixed window sash in a perpendicular direction with respect to a length direction of the rail, thus allowing the entire seal member interposed between either the blank frame or the fixed window sash and the movable window sash to be uniformly pressed in the perpendicular direction. Thus, excellent soundproofing, air tightness (windproofing), water tightness, insulation performance, and wind pressure resistance can be provided. Furthermore, the sliding window system has a simplified opening / closing structure and a minimum number of components, and low manufacturing cost.

A pipe lining material comprising an inner lining material and an outer lining material is used to rehabilitate an aged existing pipe. The inner lining material and the outer lining material are made of a tubular resin-absorbent material that is impregnated with a photo-curing resin and a thermosetting resin. The resin-absorbent material of the inner lining material has a higher density than that of the outer lining material. The photo-curing resin of the inner and outer lining materials is cured by light when the pipe lining material is irradiated with light, and the heat generated when the photo-curing resin is cured cures the thermosetting resin of the inner and outer lining materials. Since the resin-absorbent material of the inner lining material has a high density, voids are less readily formed. Even if voids are generated in the resin-absorbent material of the outer lining material, the voids will be covered by the inner lining material having fewer voids. This ensures that the pipe lining material will have better water-tightness.

The present invention relates to an improved cord-winding device universally mountable to any front or rear North-American-style license plate bracket, accommodating all electrical devices, which require a 120VAC power supply for a vehicle. The present invention comprises; a housing containing: a reel, a connection box, a male cord housing, a cord hatch and mounting holes, a closure plate and a universal mounting plate. A female receptacle extends from the housing to allow electrical connections to be made in a place away from weather exposure such as engine or rear compartment. The universal license plate cord winder of the present invention can thereby be mounted either from the top or the bottom of housing without compromising the structural integrity of the attachment while maintaining a water tightness required by such a device.

The invention discloses a method for producing a foam microcrystal glass by utilizing a composite industrial residue, and is characterized by comprising the following steps of: crushing different industrial residues, after mixing proportionally, grinding to raw material powder, heating, melting, quenching and drying the raw material powder, grinding to clinker powder, adding a nucleation agent, a foaming agent, a foam stabilizer, a fluxing agent and an enhancer to form a foam microcrystal batch, after pressing the batch, preheating, foaming, stabilizing the foam and annealing, sintering to obtain the foam microcrystal glass. According to the invention, burnability of the batch is remarkably improved, the burning temperature is reduced, the production cost of the foam microcrystal glass is reduced, and the method has the characteristics of abundant raw material sources, low cost, simple process, environmental friendliness, and the like. The product foam microcrystal glass has the characteristics of excellent performance quality, low volume weight, high intensity, fire protection, water tightness, corrosion resistance, no ageing, no radioactivity and the like, and is an environmental-friendly new material.

The invention discloses a wireless rechargeable electronic bracelet and a wireless charging method thereof. The wireless rechargeable electronic bracelet comprises a bracelet casing and a wireless charge base for charging the same wirelessly. A power supply system comprising a polymer lithium battery, a charge protection circuit, a charge management module and a wireless charge receiving module is mounted in the bracelet casing; the wireless charge receiving module comprises a receiving coil and a rectifying and filtering voltage-stabilizing circuit. The wireless charge base comprises a base box, a transmitting coil and a high-frequency resonance circuit are both mounted in the base box, and the high-frequency resonance circuit is connected with an AC-to-DC transformer which is further connected with an external power supply. The wireless rechargeable electronic bracelet has the advantages of convenience in use. As the electronic bracelet is of the design of the wireless charge technique, the electronic bracelet has better water-tightness, the environmental adaptability of the electronic bracelet is improved, the appearance of the electronic bracelet is fashionable, and the electronic bracelet has ultramodern characteristics.

An ultraviolet lamp for water sterilization in accordance with the present invention comprises an illuminating unit, a base, an O-ring, a collar and a quartz tube. By clamping the O-ring between the base and the collar to provide a compressing sealing efficiency, water-tightness efficiency is improved and change convenience of the illuminating unit is obtained. Wherein, the illuminating unit is composed of an upper filament and a lower filament enclosed inside a quartz inner tube and then further protected by the O-ring so that a dual-protection to the illuminating unit is achieved. Thereby, the ultraviolet lamp has excellent water-tightness efficiency to extend its lifespan and is convenient and time-saving in assembly and repair.

The invention discloses a strain propeller electric test dynamometer which comprises a support, a servo motor arranged above the support, a vertical transmission shaft in transmission connection with the servo motor, and a horizontal transmission shaft in meshed transmission with the vertical transmission shaft through a gear set, wherein one end of the horizontal transmission shaft is connected with a thrust / torque sensing device; the thrust / torque sensing device is connected with a propeller through a horizontal spindle; a junction box is arranged at the other end of the horizontal transmission shaft through a sliding ring. The immersion depth tested by the dynamometer is 500mm, the dynamometer has high water tightness and normally operates at the temperature of 0-40 DEG C, the stress conditions of an underwater propeller in an operating state can be accurately measured, and the error is controlled to be 0.5 percent.

An airloop wall system with durable water-tightness performance is disclosed. The system comprises a base anchor member secured to a top surface of a first floor slab, a base track connected to the base anchor, a base flashing for repelling moisture, a first ceiling anchor member secured to a bottom surface of the first floor slab, a first ceiling track connected to the first ceiling anchor member, a slab edge panel attached to the base track and the first ceiling track, a second ceiling anchor member secured to a bottom surface of a second floor slab, a second ceiling track connected to the second ceiling anchor member, a panel sill frame attached to the base track, a panel head frame attached to the second ceiling track, two jamb frames, and a panel secured between the frames. Corners of the frames are miter-matched such that air spaces inside form an airloop.

The invention discloses a shallow tunneling method for a pipe-proof-supporting structure combined system. The method comprises the steps of A, arranging two vertical working wells in areas without sensitive buildings at the two ends of an underground structure; B, ejecting size and diameter combination steel pipes into the periphery of an underground main body structure through the vertical working wells to form a tube screen; C, reinforcing a soil body between the steel pipes through a grouting or freezing method to form water tightness underground space; D, under the protection of the combined tube screen, conducting shallow tunneling construction on the underground main body structure, and enabling the tube screen and a supporting structure to form a longitudinal annular combination stress system with large rigidity; E, after the combination stress system achieves a certain strength, disassembling an inner contemporary support, and constructing the underground main body structure. The shallow tunneling method for the pipe-proof-supporting structure combined system has the advantages that the pipe screen is combined with the supporting structure, the combined stress system with the large rigidity is formed, settlement is strictly controlled, loss of underground water is effectively controlled, construction and operation safety is ensured, and the shallow tunneling method for the pipe-proof-supporting structure combined system is particularly suitable for the situation that an ultra-shallow berried oversized section saturated tunnel penetrates through the sensitive buildings underground.

The invention belongs to the field of a tunnel project, in particular to a T-shaped water tightness test device of a shield tunnel elastic sealing gasket, which comprises a rectangular cover plate provided with a water inlet, and two L-shaped cover plates with air outlets, wherein the rectangular cover plate and the L-shaped cover plates are respectively jointed on one surface of the rectangular cover plate to form a jointing surface; the two L-shaped cover plates are symmetrically distributed along the axis wire of the jointing surface of the rectangular cover plate, and are mutually jointed to form another jointing surface; the cover plates on both sides of the jointing surface are correspondingly provided with an installation groove of the sealing gasket; bolts distributed on the periphery of the cover plates are tightly jointed between the jointed cover plates; and the side part of the rectangular cover plate is provided with a limit board. The invention can be used for accurately testing the waterproofing ability of an elastic sealing belt on the condition of different openings and different slab staggering quantities of duct pieces, in particular the waterproofing ability of the sealing belt at the corner part during assembling staggered joints. Thus, the evaluation system of waterproofing ability is more accurate and in place.

The invention relates to an epoxy asphalt deck crack repairing agent capable of being cured at normal temperature, which comprises mixture A and B, wherein the mixture A contains the following components in parts by weight: 30-40 parts of 618 bisphenol A epoxy resin, 2-6 parts of CYH-277 reactive epoxy toughener and 3-7 parts of epoxy active diluent; and the mixture B contains the following components in parts by weight: 90-100 parts of 203 modified amine hardener, 1-2 parts of DMP-30 curing accelerator and 1-2 parts of KH-550 organic siloxane coupling agent. After being respectively prepared, the mixtures A and B are respectively stirred and mixed; and after the mixture (1) and the mixture (2) which are uniformly stirred are mixed together in the weight ratio of 3:1, the mixture (1) and the mixture (2) are stirred and mixed to obtain the repairing agent. Because the repairing agent contains the bisphenol A epoxy resin, the repairing agent has super-strong bonding capability and stable performance in the variation range of deck temperature; the repairing agent has good high-temperature flow resistance, compact structure, water tightness, certain deformation resistance and good chemical corrosion resistance; and the comprehensive performance of the repairing agent is obviously better than that of the traditional asphalt crack pouring material.

The invention relates to a testing device and a testing method for the water tightness of a cable. The testing device is characterized in that a pressure gauge, a pressure release valve, a water source interface and a pressurizing interface are respectively arranged on a pipe body of a pressure chamber, the two ends of the pipe body of the pressure chamber are respectively provided with a flange in a fixed mode, a fastening nut with a line passing hole or a fastening nut without the line passing hole is screwed at each of the two ends of the pressure chamber through O-ring seals, a measuring cylinder is arranged below the fastening nut with the line passing hole, and a pressuring device is connected with the pressurizing interface. The testing method comprises the following steps of: inserting the manufactured cable into the pressure chamber, sealing the two ends of the pressure chamber by the fastening nuts through the O-ring seals, and placing two ends or one end of the cable extending out of the fastening nuts with the line passing hole in the measuring cylinder; filling the pressure chamber with water; pressuring the pressure chamber; and after ending the test, checking whether water leaks at the two ends of the cable, or measuring the volume of leaking water in the measuring cylinder. The testing device and the testing method can be used for really simulating the high-pressure state under water and effectively detecting the water tightness of the cable and have the characteristics of good repeatability, small errors and the like.

Disclosed are a stair unit structure, a precast stairway system and a method for constructing such a precast stairway system using one or more stair unit structures. The stair unit structure is formed in a one-piece structure by at least one stair with a riser and a tread. The precast stairway system includes a stairway formed by connecting stair unit structures one after another and two inclined stringers, and has a high or ultra-high strength, but is still excellent in endurance and load carrying capacity due to its relatively superior flexible behavior as compared with an existing high strength concrete. The precast stairway system also exhibits excellent water-tightness and excellent noise-reducing performance as to walking load. In the method for constructing a stairway, one or both stringers may serve as molds in a position where they can be fixed within a wall body to be constructed, thereby forming a floor landing, and an intermediate landing integrally and simultaneously with the wall body. Accordingly, not only the precast stairway can serve as a working passageway, but also the wall body can support the load of one or both inclined stringers in the course of construction, as a result of which labor cost curtailment, construction cost curtailment owing to short construction period, manufacture / transport cost curtailment, and the shortening of construction time can be promoted.

The invention relates to an antibacterial and antioxidant edible gelatin composite membrane and a preparation method thereof. The method comprises the steps of firstly carrying out blending, heating and ultrasonic treatment on curcumin and a solubilizer; mixing with gelatin and a plasticizer solution evenly, adjusting the pH value of a mixed solution to be 7-11, adding a cross-linking agent solution, mixing evenly at a room temperature and then injecting into a mold; and finally drying to prepare the gelatin composite membrane. Through adding the natural active material curcumin, the gelatin composite membrane is endowed with antibacterial and antioxidant properties, a gelatin material can be prompted to display different colors in different pH value environments through successful instruction of the curcumin, and environmental pH value responsiveness of the gelatin membrane material is achieved. In addition, the gelatin composite membrane also has the characteristics of being wide in raw material source, high in mechanical strength, good in water-tightness, environmentally degradable and edible, and has potential market application value in the field of medicine and food packaging.

The invention discloses a test system for the water tightness test of a tunnel deformation joint waterstop, which comprises two steel tanks mounted, in a sealed manner, at two sides of a waterstop to be tested, a steel structured test bench, an atmospheric pressure test bench, a hydraulic pressure test bench, an air compressor, a remote-distance full-automatic observing and reading apparatus and a safety protection device. The test device of the invention can be used for the water tightness test of a plurality of waterstops, realize random opening displacement and shear displacement accurately, and simulate the stress condition of deformation joint waterstop structure under different working conditions by applying atmospheric pressure in balloon to a tested object through the atmospheric pressure test bench and applying hydraulic pressure to the steel tanks through the hydraulic pressure test bench to simulate seawater pressure. The system and the method are suitable for the test of OMEGA and GINA waterstops as well as expandable waterstop.

The invention relates to an organic light emitting diode (OLED) display panel and a manufacture method thereof. The manufacture method includes providing a first substrate and a second substrate, wherein an OLED layer is formed on the first substrate; coating a first sealant on the surface of the OLED layer located on the first substrate; coating a second sealant on the surface of the second substrate, and coating a third sealant on the periphery, located in the second sealant, of the second substrate, wherein the viscosity of the first sealant is smaller than that of the second sealant; laminating and solidifying the first substrate and the second substrate so that the second sealant covers the first sealant and fills a gap between the first and second substrates and the third sealant. By means of the OLED display panel and the manufacture method thereof, tension of contact surfaces of the sealants and an OLED during a solidifying process can be reduced, damages to the OLED are reduced, and meanwhile, good water-tightness of a sealing structure of the OLED can be guaranteed.

A corrosion-resistant alloy metal tube sheet used to construct a shell and tube heat exchanger (50) for cooling fluids with sea water passing through corrosion-resistant alloy tubes (25) contained in a horizontal carbon steel outer shell (1) that are supported and sealed at each end by passing them through holes (27, 30) in a carbon steel tube sheet (28, 31) and axially aligned holes (36, 37) in alloy tube sheets (34, 35) that cover and protect the adjacent interior carbon steel tube sheets from sea water corrosion. The walls of the holes (27, 30, 36, 37) have at least one annular groove (45, 46) and the ends of each tube are radially expanded to form circumferential ridges (40, 41) on the outside of each tube at a mating location with each of said annular grooves (45, 46) where they are forcibly driven into the grooves to form a circumferential joint having good mechanical strength and water tightness, thereby eliminating the need for welding the external joint between the alloy tube sheets and alloy tubes.

The invention discloses a high-permeability three-layer co-extrusion composite film and application thereof. The composite film comprises an inner layer, a middle layer and an outer layer, wherein theinner layer is an ethylene-vinyl acetate copolymer layer; the middle layer is arranged outside the inner layer and is a polyolefin elastomer layer, and the polyolefin elastomer contains the followingcomponents in percentage by weight: 92.5%-98.7% of polyolefin elastomer colloidal particles, 0.1%-1% of an antioxidant, 0.5%-2% of a thermal initiator, 0.5%-2.5% of cross-linking monomers, 0.1%-1% ofa silane coupling agent and 0.1%-1% of a light stabilizer; and the outer layer is arranged outside the middle layer and is an ethylene-vinyl acetate copolymer layer. The high-permeability three-layerco-extrusion composite film has the advantages of excellent water tightness and anti-PID performance, high permeability, relative low lamination temperature, relatively short lamination time and thelike, the production energy consumption of a photovoltaic module is reduced, the production cost of the photovoltaic module is lowered, the production efficiency and the photovoltaic power generationefficiency are improved, and the composite film can be applied to the adhesion of photovoltaic glass and battery pieces of photovoltaic cells.

A waterproof slide fastener in which an entire surface of a fastener tape is covered with elastomer, through holes are made in a side edge of the fastener tape, and fastener elements each comprising a coupling head, a neck portion, an engaging projection, a leg portion and a tongue piece, are molded by injection molding so as to cover the through holes. Reinforcing portions are provided projectingly from sides of the leg portion so as to cover at least a part of each of the through holes in a longitudinal direction of the through holes made in the fastener tape so that the reinforcing portions surround the through holes, so the reinforcing portions prevent the through holes from being exposed even when the fastener tape is bent, thereby maintaining water-tightness and airtightness.