919results about How to "Improve 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.

A waterproof structure with a simple structure and a good assemble workability is provided. A recess portion is formed on a side of an inner casing, and a through hole is formed at the bottom of the recess portion. The through hole runs to a housing recess portion, and a dome switch opposes to the through hole in the inner casing. A protrusion of a cup member is inserted into the through hole from the outside of the inner casing. A protrusive portion protruding from the bottom surface of a push button is inserted into the opening of the cup member. A rubber sheet which couples the push button is sandwiched between the inner casing and a top cover and a back cover.

The present invention provides a piping joint and integrated valve with the piping joint, which improve airtight and watertight, maintain connection firm, and keep constant quality regardless repeated user. In connecting part (110, 120) of the joint body (100), the first holes (112, 113), the second packing holes (114, 124) where the first packing rings (170, 180) are inserted, the third holes (116, 126) with a female threaded part inside conjoining the second packing rings (150, 160) and bushes (130, 140), having three holes formed three phases outward on the concentric circle. The first packing rings (170, 180) are made of silicon or Teflon(R) that is flexible and sustainable against heat. One side of said second packing rings (150, 160) contact the first packing rings (170, 180), and ground the contact parts (152, 162) stoppers (154, 164) are placed to prevent the second packing rings (150, 160) from inserting too deeply into inside of the connecting parts (110, 120) of the joint body (100) and the other sides are tapered down in a certain angle to contact the slant (137, 147) of edges or bushes (130, 140), and the tapered parts (156, 166) are equipped with projections (158, 168) inside to hold pipes (P1, P2) firm.

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.

A waterproof fastener tape of a watertight slide fastener includes a fabric tape and a waterproof layer. The fabric tape includes a first surface, a second surface, a first edge, a second edge, a first cord portion, and an extension portion. The first cord portion protrudes from the first surface. The first and second edges are connected between the first and second surfaces. The first cord portion is spaced from the first edge at a smaller distance than from the second edge. The extension portion extends between the first edge and the first cord portion. The second surface is planar. The waterproof layer covers the first surface, the second surface, the first cord portion, the first edge and the second edge.

The invention discloses a sole and a manufacturing method for the sole, and aims to provide a sole with high abrasion resistance and anti-skid property. According to the technical scheme, the sole consists of the following components in part by mass: 45 to 55 parts of nitrile rubber, 18 to 22 parts of brombutyl rubber, 21 to 25 parts of butadiene rubber, 6 to 8 parts of natural rubber, 28 to 32 parts of nano silicon dioxide, 18 to 22 parts of glass fiber, 3.5 to 4.5 parts of nylon fiber, 0.8 to 1.2 parts of polyethylene glycol 4000 (PEG 4000), 1.8 to 2.2 parts of rubber white smoke active agent, 1.4 to 1.6 parts of stearic acid, 3.5 to 4.5 parts of ZnCO3, 0.8 to 1.2 parts of antioxidant, 1.8 to 2.2 parts of coupling agent, 4.5 to 5.5 parts of anti-skid agent, 0.5 part of microcrystalline wax, 1.5 to 2.0 parts of sulfur, and 2.0 to 2.5 parts of vulcanization accelerator. The invention belongs to the technical field of making of shoes.

The invention provides cement-emulsified asphalt mortar and a preparation method thereof. The cement-emulsified asphalt mortar comprises the following components in part by weight: 110 to 160 parts of emulsified asphalt, 10 to 30 parts of polymer emulsion, 90 to 100 parts of cement, 150 to 250 parts of sand, 0 to 0.5 part of strength modifier, 0 to 10 parts of expanding agent, 0 to 1.0 parts of fiber, 0 to 0.05 part of cellulose, 0.004 to 0.015 part of aluminum powder, 0 to 0.1 part of defoaming agent, 0 to 1.2 parts of air entraining agent and 0 to 25 parts of water. The cement-emulsified asphalt mortar has good low-temperature resistance, and is suitable for the slab tracks of high-speed railways, passenger transport lines and urban high-speed light rails in severe cold areas.

The invention discloses a shielding longitudinal watertight degaussing cable and a production method thereof for ships. A tinned copper wire is impregnated with a sealant and then twisted into a twisted copper conductor which is impregnated with a conductor sealant layer on the periphery, an electro-insulating rubber layer is extruded on the periphery of the conductor sealant layer to form insulation core wires, chloroprene rubber filling bars are filled into gaps between the insulation core wires, and a plurality of insulation core wires are twisted wholly into a cable core. A cable core inner sealant layer, an inner jacket rubber layer, an armor shielding layer and an outer jacket rubber layer are sequentially arranged on the periphery of the cable core. A single wire of the cable conductor is impregnated with the sealant, the twisted copper conductor is impregnated with the conductor sealant layer on the periphery, the cable core inner sealant layer is extruded on the periphery of the cable core to form multiple sealing, the chloroprene rubber filling bars swell during follow-up vulcanization and can fill in the gaps inside the cable core completely, and tangency between the insulation core wires can be avoided, so that the sealant can permeate to the inside of the cable core to guarantee the watertight effect when the cable core inner sealant layer is extruded.

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.

The relates to a fireproof seal filler for ship cable transfixion channel and opening and preparing method thereof, which belongs to flame-proof sealing material technique field. Components and weight percent of raw materials employed by the invention are that: kaolin of 10-20%, talcum powder of 5-10 % and silicon micro-powder of 30-50% are used as base-material; aluminum hydroxide of 10-20%, hydrated zinc borate of 5-10% and magnesium hydroxide of 10-20% are used as flame retardant; wherein proportion of the base-material and the flame retardant is 1:1-2.3:1; in addition, coagulants of calcium sulfate, calcium chloride, magnesium chloride and sodium carbonate are added, weight percents of the four coagulants are separately 20-40% based on total weight of the base-material and the flame retardant as 100%. Firstly the coagulant is mixed with water to prepare serum, when actually using, the serum is added in mixed powder material of the base-material and the flame retardant, and the pasty fireproof seal filler is obtained by sufficiently stirring of highly effective stirring machine.

The invention discloses an asphalt pavement repair material, and belongs to the field of engineering materials. The asphalt pavement repair material is prepared from 20-60 parts of monomers of thermosetting polymers and/or prepolymers of the thermosetting polymers, 2-8 parts of an antioxidant, 1-8 parts of an accelerant, 10-30 parts of an admixture, 5-60 parts of the thermosetting polymers, 10-40parts of an initiator, 10-20 parts of a reinforcing agent, 1-60 parts of a diluent and 10-40 parts of aggregates. The asphalt pavement repair material has the advantages of being high in condensationrate, strength, waterproofness and abrasion performance and capable of repairing pavement and getting the traffic to move again in 30 minutes and making construction easy. According to a pavement repaired with the asphalt pavement repair material, the compressive strength can reach 100 MPa, the wet wheel abrasion value is smaller than 800 g*m<-2>, and the load wheel adhesion sand amount water immersion 1d is smaller than 450 g*m<-2>.

The invention relates to a modified asphalt mixture and preparation and construction methods thereof, particularly relates to rubber modified asphalt and preparation and construction methods thereof and belongs to the technical field of engineering. The rubber modified asphalt and the methods solve the construction problem that the mixture is thick and sticky by adding trans-polyoctenamer rubber (TOR) into the asphalt mixture, further reduce the stirring temperature of the rubber asphalt mixture, reduce processing equipment, improve production process, and are favorable for preventing water damage by a design method of continuous dense gradation. The preparation process of the mixture improves the using performance of the rubber asphalt mixture. The rubber modified asphalt and the methodshave the advantages of promoting the comprehensive utilization of waste tires by paving asphalt pavements with waste rubber powder modified asphalt, reducing great environment stress brought by blackpollution, saving resources, improving the pavement performance of the asphalt mixture, improving the service quality of the pavement, prolonging the service life of the pavement, reducing cost, and improving performance of products. Compared with the conventional modified asphalt production process, the preparation and construction methods have the advantages of energy saving and environmental protection and are convenient for construction.

A wetsuit includes a wetsuit jacket having a hem, wetsuit pants having an upper sack body, a strap portion of waterproof material provided on an inside circumference of the hem of the wetsuit jacket, a fixed portion at which an upper end of the strap portion is watertightly fixed to the inside circumference of the hem of the wetsuit jacket and press-on and split-off fastener tapes provided at portions of mutual contact in a state where the upper sack body is sandwiched between the hem and the strap portion for preventing deviation of the mutual contact portions.

A door opening and closing apparatus for a vehicle includes a support member interposed between a body and a door of the vehicle and expandable and shrinkable so as to enable holding of the door at an open position. The support member includes a first housing unit having an electric motor driving mechanism and a second housing unit integrally joined to the first housing unit. The second housing unit includes an outer cylinder, an inner cylinder disposed concentrically in the outer cylinder and engaged with the outer cylinder by fitting engagement in a movable manner relative to the outer cylinder, a spindle connected to the electric motor driving mechanism, and a spindle driving mechanism for moving the inner cylinder relative to the outer cylinder in an axial direction due to rotation of the spindle.

The bi-directional work doing transmission mechanism includes power input unit, two single-way transmission parts, and power output unit to drive simultaneously these two single-way transmission parts to move oppositely. The present invention also discloses portable self-aid generating and lighting device with the bi-directional work doing transmission mechanism. The present invention is superior in that two single-way transmission parts are driven in opposite directions so that there is always one single-way transmission part to drive the power output unit during the reciprocating motion, resulting in best utilization of energy and raised transmission efficiency.

The present invention is related to a watch case adapted to be integrated into a wrist watch device, the watch case comprising an inner volume for housing internal components of the wrist watch device and attachment elements for attaching at least one watch strap of the wrist watch device, wherein at least one portion of the inner volume of the watch case extends laterally (or longitudinally) beyond the points of attachment of the at least one watch strap. The present invention is also directed to a corresponding watch strap as well as to a wrist watch device comprising such a watch case.

A hot-air fabric welder for waterproofing tape is invented for selectively welding straight portions and arc portions. The hot-air fabric welder for waterproof tape is comprised of: a lower roller unit including a flat roller portion and a tapered roller portion mounted to the upper end of a support. The lower roller unit is divided into a flat roller body and a tapered roller body for selectively positioning into contact with the upper roller, so that the surface of the lower roller unit contacts the upper roller. A driving means is provided for rotating the lower roller unit. A pivoting means is provided for rotating the support on which the lower roller unit is mounted for selective use of the flat roller portion or the tapered roller portion. A hot-air generating unit is linked to the lower roller unit, driving unit and pivoting unit, and an upper roller is arranged above the lower roller unit.