313results about How to "High fire rating" patented technology

An improved air gun for firing paint balls, pellets,, consisting of a passively venting and freeze resistant regulator, a pressure differential trigger mechanism, and a muzzle break with angled sidewalls. The freeze resistant regulator regulates incoming high pressure gas to a user predetermined pressure to operate the gun while avoiding freezing of the regulator associated with frigid incoming compressed gases and high firing rates. This is accomplished by using a heat transmission component formed by the engagement between a hemispheric shaped tip of a regulating pin and a hemispheric cavity of an adjustment piston. Passive venting of gas from the gun upon removal of the pressurized gas supply is provided by the regulator using a reciprocating regulating pin and adjustment piston which combine to compress a seal into a seat only when pressurized gas is attached to the air gun. Once detached from a pressurized air supply the compressed air in the gun vents through the seat. Firing of the gun is achieved using a pressure differential trigger mechanism capable of fine pull adjustment using a trigger biasing mechanism. Greater accuracy of projectiles leaving the gun is provided by the muzzle break featuring of a plurality of elongated oval slots having angled sidewalls to parse propulsion gases from the projectile which reduces air turbulence encountered by the projectile upon exit from the gun.

The present invention is fireproof building board of ceramic fiber, and belongs to the field of ceramic fiber material technology. The fireproof building board of ceramic fiber is produced with aluminum silicate fiber or light refractory stuffing as base material, and through adding one or several kinds of enhancing fiber; adding proper amount of organic binding agent or inorganic binding agent, stuffing and additive; pulping; forming; drying and other steps. The fireproof building board of ceramic fiber is used as the heat insulating board in building, and has high fire rating, high fire resistance, high heat isolating performance, high strength, low density and low cost.

The rotary bolt (100) of the present invention has a cylindrical-shaped bolt assembly, which rotates about a central shaft 130. About the circumference of the bolt (100) are a number of chambers (110), each of which can accept a single projectile (112) as it passes through a feed aperture (107). As the bolt (100) rotates, it transports the projectiles (112) from the feed aperture (107) to the breech (104) from where the projectile (112) can be launched from the barrel (106) of the launching device (102).

A kit of components for constructing a building comprises a first coupling part (30) embedded in one end of a beam (14), and a second coupling part (50) embedded in one end of a post (12). The coupling parts (30,50) have end profiles (32,52) with apertures (34,54) which are registrable when the beam (14) abuts the post (12). Once registered with beam (14) resting on ledge (64) the apertures are slidably engaged by a locking pin (70), coupling the beam (14) to the post (12).

The invention discloses a homogeneous non-combustible polyurethane foam heat insulating material and a preparation method thereof. The heat insulating material is prepared by reacting the following raw materials in parts by weight: 6~20 parts of polyurethane rigid foaming material, 4~20 parts of flame retardant and 60~90 parts of inorganic filler, wherein the loose packing density of the inorganicfiller is 1.0~2.0 g/cm<3>. The heat insulating material prepared by the invention has overall density between 120 and 800 kg/m<3>, compressive strength being greater than and equal to 0.10 MPa, highmechanical strength, good durability, total heat value being smaller than and equal to 3.0 MJ/kg, combustion growth rate index being smaller than and equal to 120 W/s and 600 s total heat release ratebeing smaller than and equal to 7.5 MJ, and belongs to A2 grade non-combustible material, and has high fire-proofing safety and simple preparation process, and can realize industrial production.

A compounded latex retardant for preventing coal spontaneous combustion belongs to the technical field of retardants, and comprises the following components by weight ratio: 20 to 80 polymer emulsion, 10 to 90 organic modified clay, and 0.5 to 60 retardant, as well as 1 to 50 dispersant in a concentration of 0.1 to 10wt%. The preparation method comprises the following steps: adding the clay into silane coupling agent solution; performing ultrasonic or stirring dispersion by 30mins; dissolving the dispersant into water of a certain weight ratio, and stirring under 20 to 90 DEG C to get a dispersant solution in a concentration of 0.1 to 10wt%; and adding the organic modified clay and the prepared dispersant solution into the polymer emulsion, fully stirring, adding the retardant, and stirring to achieve uniform concentration. The retardant provided by the invention can not corrode metal equipment during use, harmful gas the wastes can not be generated, no pollution is caused to coal mine environment, and adverse effects and side effects to human body are prevented. Therefore, the retardant is environmental-friendly.

A nano-class composite wooden material for plate, tube, or section is proportionally prepared from laminar silicate, high-molecular resin, natural plant fibers, inorganic filler, and chemical assistant through proportional mixing, and extruding out or injection moudling. It is possible to granulate before it is shaped.

A fire resistant roofing tile which utilizes economical materials and is formed using an efficient manufacturing technique. The tile has components shaped to prevent fire spread significantly enough to achieve a Class A fire retardation rating. Recycled materials are used in a compression molding process for commercial appeal and benefit to the ecology.

The invention relates to a novel multi-purpose fireproof composite heat-insulation plate comprising a fireproof composite heat-insulation plate body, a fastener and a heat storage substrate plate or a surface-layer veneer plate, wherein the fireproof composite heat-insulation plate body sequentially is formed by sequentially compounding a protective layer, a composite heat-insulation plate or a heat-insulation plate and a fireproof antiflaming reflecting layer or a reflecting layer from bottom to top; an underfloor heating pipe groove is arranged at the upper end of the composite heat-insulation plate or the heat-insulation plate; and the heat storage substrate plate or the surface-layer veneer plate and a supporting base in the composite heat-insulation plate are anchored on the fireproof composite heat-insulation plate body and an underfloor heating pipeline by using the fastener and a bolt or using the bolt directly. The novel multi-purpose fireproof composite heat-insulation plate is suitable for dry-type or wet-method low-temperature radiation heating of floors of various structural forms including steel structures and the like and inner and outer walls and roof heat insulation, improves the fireproof property of the composite heat-insulation plate, ensures that the composite heat-insulation plate can meet the new fireproof requirement and ensures the fire safety of building heat-insulation materials, and has the advantages of simplicity and convenience for installation, lower cost, economy and practicability, broad application and better decoration effect.

The invention discloses an inorganic fireproof heat insulation board and a preparation method thereof. The inorganic fireproof heat insulation board is characterized by including a hollow ceramic bead surface layer, a glass fiber grid cloth layer, an expanded perlite composite layer, a glass fiber grid cloth layer and a hollow ceramic bead bottom layer from top to bottom; potholes are arranged on the hollow ceramic bead layer, and grooves are arranged on the hollow ceramic bead bottom layer; non-woven cloth layers are arranged respectively on the hollow ceramic bead surface layer as well as the bottom layer; further, the hollow ceramic bead surface layer and the hollow ceramic bead bottom layer are made of hollow ceramic bead slurry, and the expanded perlite composite layer is made of expanded perlite composite layer slurry. The preparation method includes the following steps: preparing the hollow ceramic bead bottom layer; spreading the glass fiber grid cloth; preparing the expanded perlite composite layer; spreading the glass fiber grid cloth; preparing the hollow ceramic bead surface layer; compacting for formation; and demoulding and solidifying. The inorganic fireproof heat insulation board has the advantages of excellent heat insulation performance, low thermal conductivity, fire resistance and high fireproofing grade, environmental protection and the like; further, the integral compression strength is greatly improved.

Provided are a heat-insulating fireproof material based on phenolic aldehyde hollow microspheres and a preparation method thereof. The heat-insulating fireproof material comprises, by weight ratio, 45-60 wt% of liquid thermosetting phenol resin, 5-20 wt% of phenolic aldehyde hollow microspheres, 5-20 wt% of light filling and 5-15 wt% of flame retardant. The sum of mass percents of all the ingredients is 100 wt%, wherein the phenolic aldehyde hollow microspheres are spherical blind hole phenolic aldehyde hollow microspheres with a diameter of 0.1-500 um and a stacking density of 50-200 kg/m<3>. The invention further comprises the method for preparing the heat-insulating fireproof material based on the phenolic aldehyde hollow microspheres. The product has the advantages that the material is large in foam intensity, good in toughness and low in electrical conductivity, foam holes are uniform, the residual acidity is small and even neutral, and the material is green, environmentally friendly and high in fireproof grade. The preparation forming process is simple.

The present invention is an instrument for the rapid firing of a self-loading firearm in a manner which was not previously possible. Some exemplary embodiments of the present invention comprise a fire control group for firearms essentially conforming to semi-automatic fire control groups as known to the art with the addition of novel features, as described herein, which temporarily transfer hammer spring force to the trigger after the firearm has fired live ammunition, resulting in the urging of the trigger to its reset position by hammer spring force. This temporary use of hammer spring force to urge the trigger to its reset position enables more controllable rapid firing of the firearm and other attributes.

A gatling gun style projectile launcher comprising an assembly of rotating, pressurized-air driven guns. A loader assembly mounted on the gun assembly rotates synchronously through mating of drive gears with the assembly of guns. The loader applies centrifugal force to the paintballs within, urging them into loader tubes positioned in the wall of the loader. Synchronous timing gears align the rotating loader tubes with cognate breech openings in the guns, thereby transferring paintballs into the firing positions from which the paintballs are launched.

A firing apparatus (1.0) for a projectile-firing weapon of the type comprising a barrel (8) having a bore therein, the firing apparatus comprising a breech assembly (2.0) adapted to be secured to the barrel (8), a firing mechanism (5.0) adapted to initiate firing of the projectile from the bore, and a valve means (4.0)adapted to allow air within the bore, between the projectile and the firing mechanism (5.0), to be expelled from the bore during loading of the projectile through the bore.

The invention provides internal and external wall fireproof insulating plates, and particularly relates to a vitrified micro bubble composite rock wool fireproof insulating plate and a manufacturing method thereof. In the vitrified micro bubble composite rock wool fireproof insulating plate, a rock wool plate is used as a base layer; a vitrified micro bubble layer, an alkaline-resistance mesh cloth layer, a vitrified micro bubble surface layer and a vitrified micro bubble bottom layer are solidified on the outer surface of the base layer; a plurality of laminar structures are solidified into a whole; and a groove is formed on the surface of the vitrified micro bubble bottom layer. The preparation method comprises the following steps: preparing vitrified micro bubble insulating slurry, and applying a layer of interface mortar on the upper surface, the lower surface and the periphery of a rock wool plate; uniformly applying the vitrified micro bubble slurry on the upper surface and the lower surface of the rock wool plate to form an upper vitrified micro bubble bottom layer and a lower vitrified micro bubble bottom layer; respectively bonding and paving two alkaline-resistance mesh clothes on the applied upper and lower vitrified micro bubble bottom layers, and sewing the upper and lower vitrified micro bubble bottom layers together; applying hydrophobic vitrified micro bubble mortar on the alkaline-resistance mesh cloths once again to form an upper vitrified micro bubble surface layer and a lower vitrified micro bubble surface layer; and forming a slot on the lower vitrified micro bubble surface layer. The vitrified micro bubble composite rock wool fireproof insulating plate is used for external wall insulation and fireproofing, can achieve the A-level fireproof requirement, and accords with high-rise building insulation and fireproof standards in China.

The invention discloses an inorganic sandwich composite external thermal insulation system and a construction technique thereof. The inorganic sandwich composite external thermal insulation system comprises a foundation wall, wherein the border periphery of the foundation wall is orderly provided with an inorganic light-weight aggregate thermal insulation mortar bonding layer, an inorganic fiber cotton heated board layer and an inorganic light-weight aggregate thermal insulation mortar bonding and leveling layer, and an anti-cracking protective layer and a coating facing layer are orderly arranged outside the inorganic light-weight aggregate thermal insulation mortar bonding and leveling layer. The construction technique comprises the following steps: after wall face base layer treatment and border mortar treatment, sticking inorganic fiber cot ton heated boards with adhesive inorganic light-weight aggregate thermal insulation slurry, leveling the slurry surface layer by attaching inorganic light-weight aggregate thermal insulation mortar, and finally, constructing the anti-cracking protective layer and the coating facing layer. The fire-protection rating of the inorganic sandwich composite external thermal insulation system achieves non-combustible type; and the invention has the advantages of weather fastness and air permeability.

The invention relates to a device for delaying the gas action operated firearm. The device includes a gas chamber and an outlet, wherein the outlet is in fluid communication with the action tube of the firearm. The device has a port in fluid communication between the gas chamber and the barrel and a one-way check valve in the port. A gas release valve is included and is disposed on the container and in fluid communication with the gas chamber and the outlet. The device further includes linkage attached to the gas release valve and in mechanical communication with the bolt, such that when the gas release valve is in the closed position, gas is retained in the gas chamber and the linkage blocks the bolt from moving, and when the gas release valve is in the open position the linkage unblocks the bolt permitting normal gas action of the firearm.

The invention provides a cavity floor with a hollow ribbed steel mesh. The cavity floor with the hollow ribbed steel mesh comprises a main beam, a ribbed beam, an upper flange slab, a lower flange slab, a column-beam structure platform and a hollow ribbed steel mesh, wherein the column-beam structure platform is a hidden platform or an apparent platform or a conical platform; a steel mesh body with the hollow ribbed steel mesh is cast in situ in concrete of the lower flange slab; the hollow ribbed steel mesh comprises a hollow mesh, a hollow end mesh and a support mesh; the hollow mesh, the hollow end mesh and the support mesh are made of pure metal materials; the hollow mesh forms the periphery of the hollow ribbed steel mesh; the steel mesh body comprises steel slab expansion mesh holes, a V-shaped rib and a steering connection sheet; the expansion mesh holes on two sides of the steering connection sheet are located in the same direction; the support mesh is a steel mesh body or a steel bar mesh body. Through the cavity floor with the hollow ribbed steel mesh, the cavity floor is cast by the hollow ribbed steel mesh; concrete mortar directly wraps the hollow ribbed steel mesh, participates in stressing and resisting crack together; the defect of the existing hollow floor technology can be effectively solved.

Gun ammunition having a propellant is provided. The ammunition being for loading from a closed ammunition hold into the loading chamber of a gun. The ammunition has a tail region and an oxygen-releasing substance arranged in the tail region. The oxygen-releasing substance is for releasing oxygen after ignition of the propellant in the loading chamber of the gun, the release of the oxygen being for oxidizing carbon monoxide that forms during the firing in the loading chamber into carbon dioxide.