42 results about "Body burnt" patented technology

A yarn, fabric, and garment suitable for use in arc and flame protection and having improved flash fire protection consisting essentially of from (a) 50 to 80 weight percent meta-aramid fiber having a degree of crystallinity of at least 20%, (b) 10 to 30 weight percent flame-retardant rayon fiber, (c) 10 to 20 weight percent modacrylic fiber, (d) 0 to 5 weight percent para-aramid fiber, and (e) 0 to 3 weight percent antistatic fiber based on the total weight of components (a), (b), (c), (d), and (e). In one embodiment, garments made from the yarn provide thermal protection such that a wearer would experience less than a 65 percent predicted body burn when exposed to a flash fire exposure of 4 seconds per ASTM F1930, while maintaining a Category 2 arc rating.

A yarn, fabric, and garment suitable for use in arc and flame protection comprising aramid fiber and modacrylic fiber wherein the modacrylic fiber has less than 1.5 percent antimony and is preferably antimony-free. In one embodiment, the yarn, fabric, and/or garments consist essentially of (a) 50 to 80 weight percent meta-aramid fiber having a degree of crystallinity of at least 20%, (b) 10 to 40 weight percent modacrylic fiber that is antimony-free, (c) 5 to 20 weight percent para-aramid fiber, and (d) 1 to 3 weight percent antistatic fiber, based on the total weight of components (a), (b), (c) and (d). In some embodiments, garments made from the yarns provide thermal protection such that a wearer would experience less than a 65 percent predicted body burn when exposed to a flash fire exposure of 4 seconds per ASTM F1930, while maintaining a Category 2 arc rating per ASTM F1959 and NFPA 70E.

A yarn, fabric, and garment suitable for use in arc and flame protection and having improved flash fire protection, consisting essentially of (a) 50 to 60 weight percent meta-aramid fiber having a degree of crystallinity of at least 20%; (b) 31 to 39 weight percent modacrylic fiber; and (c) 5 to 15 weight percent para-aramid fiber; said percentages on the basis of components (a), (b), and (c). In some embodiments, 1 to 3 weight percent of the meta-aramid fiber is replaced with an antistatic fiber comprising carbon or metal with the proviso that at least 50 weight percent meta-aramid fiber is maintained. Garments made from the yarns provide thermal protection such that a wearer would experience less than a 65 percent predicted body burn when exposed to a flash fire exposure of 4 seconds per ASTM F1930, while maintaining a Category 2 arc rating per ASTM F1959 and NFPA 70E.

Disclosed are a gas burner and a method for controlling the same in which stable use is possible and combustion efficiency is improved. The gas burner includes a burner body burned by a mixture gas of gas fuel and air, a gas supplying valve supplying the gas fuel to the burner body through a gas supplying tube connected with the burner body, an air supplying fan supplying the air to the burner body through an air supplying tube connected with the burner body, and a control part controlling air flow supplied to the burner body by controlling revolution per minute (RPM) of the air supplying fan. Since an optimal air-fuel ratio can be maintained by controlling the RPM of the air supplying fan, combustion efficiency can be increased. Since a temperature of a glass can be maintained properly, life span of the gas burner can be increased and its stable use is possible.

The invention discloses a ventilated seat cushion for an electric bicycle, which comprises a seat cushion and a back seat. The back seat is arranged on the right side of the seat cushion, and the back seat is fixedly connected in the seat cushion. The air-permeable layer makes the seat cushion air-permeable, increases the friction force of the seat cushion, and effectively prevents slipping. And in summer, it has a heat dissipation effect to prevent the temperature of the cushion from being too high and scalding the human body. The sponge layer increases the comfort of the cushion, and the softness makes driving more comfortable and relaxing. performance, preventing the cushion from collapsing and deforming, greatly prolonging the service life of the cushion, reducing the number of times people replace the cushion, and bringing convenience to people's lives. Its structure is clear and has a good heat insulation effect, preventing the cushion from being exposed to sunlight in summer Finally, the temperature of the cushion is too high, which reduces the service life of the cushion and brings inconvenience to people driving.

The invention discloses a surface treatment process of an engine body in an engine refabrication process and belongs to the technical field of engine refabrication. The surface treatment process comprises the steps of firing the engine body to make combustible in attachments on the surface of the engine body burnt thoroughly and noncombustible in the attachments hardened and sintered; carrying out shot blasting treatment on the fired engine body to smash the noncombustible on the engine body, and to simultaneously remove an oxide layer on the surface of the engine body; carting out shot cleaning on the engine body; flushing the engine body by using inflaming retarding kerosene; placing the engine body in a cleaning liquid, utilizing an ultrasonic vibrator to produce ultrasonic wave for agitating water molecules and removing the inflaming retarding kerosene and greasy dirt remaining in an internal cavity of the engine body. According to the surface treatment process, the production efficiency is high, each part of the engine body can be cleaned, the process is applicable to processing on the surface of the engine body in batches, and therefore the refabrication of the engine body is facilitated.

A cylindrically shaped combustion body of several metals or compounds like alkaline, metal or copper, which when burned produce multi-colored flames without a wick or liquid contents, and holds the flame in a stable position. As the cylindrically shape combustion body burns up, a spring mechanism pushes it upward through a tube, and a claw-like restraining device at the top of the tube keeps the combustion body from emerging out of the tube. Thus, the tip of the combustion body is held just above the rim of the tube, and the flame remains in a constant position, even as the combustion body burns shorter.

The invention discloses a bird-repellent bomb specially for an airport, which comprises a bomb body and a propellant, wherein the bomb body is a truncated cone-cylinder, the upper half part has a truncated cone structure and the lower half part has a cylinder structure; a layer of moisture-proof coating coats the outer surface of the bomb body; the center of the bottom surface of the cylinder structure is provided with an inner concave propellant cavity; the propellant cavity, on the whole, is a groove body in a truncated cone structure with a small upper part and a large lower part, and the propellant cavity is filled with the propellant; and the port of the propellant cavity is sealed by using non-woven fabric. According to the bird-repellent bomb disclosed in the invention, the overallstructure of the bomb body is improved, the resistance in the rising process of the bomb body is reduced, and the flying speed is improved; as the outer surface of the bomb body is coated with celluloid gum, moisture prevention is achieved, and the flammability is improved; the propellant is sealed in the propellant cavity by using the non-woven fabric dipped in the celluloid gum, the ignition rate of the propellant is increased, the explosion and scintillation effects of the bird-repellent bomb are effectively improved, visible light is generated, and as birds are afraid of the explosion andscintillation visible light, a bird-repellent role is played; and after the whole bomb body burns, no residual exists, the environment is protected, environmental pollution is reduced, the explosion and scintillation rate is high, and bird-repellent effects are improved.

The invention provides a combined backflow incense burner and relates to the technical field of daily necessities. The combined backflow incense burner is characterized in that a base, a ventilation net and an incense burner upper cover are organically combined and is composed of the incense burner upper cover, the base, the ventilation net, an incense containing bracket, a support, gas guide holes, a ventilation and backflow space and a burning and convection space, wherein the upper end of the base is fixedly connected with the lower end of the support, the upper end of the support is fixedly connected with the ventilation net, the central position of the ventilation net is fixedly connected with the incense containing bracket, the incense burner upper cover is arranged on the ventilation net, the gas guide holes are formed in the incense burner upper cover, the ventilation and backflow space is formed between the base and the ventilation net, and the burning and convection space is formed between the incense burner upper cover and the ventilation net. The combined backflow incense burner is used for incense body burning and is unique and novel in concept, simple and ingenious in structure, convenient and quick to use, stable and reliable in effect, easy to manufacture, low in cost and convenient to popularize.

The invention relates to a thin-walled air coolant guide tube connecting method. The thin-walled air coolant guide tube connecting method comprises the following steps: polishing, cleaning and blow-drying connectors of thin-walled air coolant guide tubes; inserting a core of a welding fixture into a part from a run-off plate end, enabling a guide tube outline, at the run-off plate end, of the part to be parallel and level to a mark of the core, and placing in a groove of the welding fixture and clamping; clamping a laser welding head by using an industrial robot, and aligning a guiding light spot of a laser to a welded joint; running a procedure in an idle manner and observing the guiding light spot, and ensuring the guiding light spot to always cover the welded joint; welding of air coolant guide tubes: running a welding procedure to weld the air coolant guide tubes, wherein the diameter of a nozzle is 10 mm, and the distance from the nozzle to a welded surface is 4 mm; after welding is finished, immediately taking out the core, clamping the run-off plate end on jaw calipers, and withdrawing the part; and cleaning after welding. By the method, the welded joint with good forming quality and consistency can be obtained, shortcomings of welding missing, burning-through, main body burning and the like are avoided, meanwhile, welding deformation is controlled effectively, and profile precision of blade basins and blade backs of the air coolant guide tubes is guaranteed.

This invention provides a safe cigarette, which consists of a cigarette body and a cigarette butt. End of the cigarette body connects with starting point of the cigarette butt; at least one water bag is connected to the end of the cigarette body. The water bag as mentioned includes bag body that contains water. When someone is smoking, cigarette body starts to burn from its starting point until the end of the body. Then, the water bag body is burned by the combustion part and water in the bag flows out and stops burning of the combustion part of the cigarette body to force the combustion part to burn itself out; what's more, when the cigarette body is ignited and only part of the body burns or the end of the body still doesn't burn, then if the cigarette needs to be discarded, external force can be applied directly to crush the water bag and let water flows out to soak cut tobacco in the cigarette body. The cigarette can be discarded only when the combustion part is extinguished.