1136 results about "Fire door" patented technology

A method and apparatus according to various aspects of the present invention is configured to automatically reset a rollable fire door curtain in the raised position. In one embodiment, a brake is coupled to a rolling fire door axle by an electromechanical clutch. The fire door is pre-disposed to unroll and close the opening, however, the brake prevents the door from unrolling. When a switch, a signal, or a fusible link indicates that the fire door should close, an electromechanical circuit board sends an electrical signal to an electromechanical clutch which opens the clutch. With the clutch open, the brake is no longer coupled to the fire door and the door closes. When the switch or signal is reversed, the clutch closes, re-coupling the fire door axle to the brake. The brake allows input rotation in both directions, but prevents the rolling door from closing under its own weight. Therefore, upon raising the curtain, the fire door is automatically reset and ready to close in the event of a fire.

An accordion fire door is provided including an accordion member having interlocking panels formed of a fire retardant or fire proof material, a guide member positioned on at least one side of the accordion member for guiding the accordion member during movement between an opened position and a closed position, end locks arranged at interconnected ends of adjacent panels for maintaining panel contact and alignment, and a releasing member connected to the accordion member for releasing the accordion member in response to a predetermined condition of at least one of heat, fire, smoke, manual initiation and a drive. The panels are self hinged along the entire interlocking sides.

A door has a core that includes a porous layer having a thickness and two opposing major surfaces. In one construction, the core also includes three fire-retardant layers, and two of the fire-retardant layers are separated by the porous layer. The porous layer and the fire-retardant layers are coupled together. Other constructions include one or more fire-retardant layers in balanced or unbalanced placement around the porous layer.

A fire door lock mechanism is provided. A handlebar is coupled to one end of an actuator whose the other end is connected with a push rod. A lock bolt is rotatably mounted in a lock cover mount which accommodates a glide mount used to drive the push rod to move horizontally. When the actuator receives a depression force from the handlebar, the actuator is driven to rotate and induces the push rod to move horizontally. By the movement from the push rod, the lock bolt is driven to rotate to engage or disengage the lock mechanism. A partition and a fire piece are coupled to the glide mount. The fire piece melts at a high temperature during a fire, making the partition moved by a force from an elastic member connected thereto and cause the lock bolt to be engaged with the partition and maintained in a locked state.

A composite product includes gypsum in an amount of 70 to 90% by weight, fibers in an amount of 1.5 to 26% by weight substantially homogeneously distributed through the composite, and a rheology-modifying agent in an amount of 0.5 to 6% by weight. The composite is caused or allowed to cure to form a cured composite. The cured composite is a fire resistant component used in a fire-rated door core, a fire-rated door or a fire-rated building panel. The fire resistant component may include a building panel, a door panel, a door core, a door rail, a door stile, a door lock block, a door border, or a door insert.

A fire resistant composition comprising: a silicone polymer; mica in an amount of from 5% to 30% by weight based on the total weight of the composition; and a limited amount of glass additive sufficient to enable the formation of a self supporting ceramic material at temperatures above the decomposition temperature of the silicone polymer and below the fire rating temperature of the composition. The glass additive addition required to produce the self supporting ceramic material has been found to be preferably from 0.3% to 8% by weight based on the total weight of the composition. The composition is applicable to products formed for fire wall linings, fire partitions, screens, ceilings or linings, structural fire protection, fire door inserts, window or door seals, intumescent seals, in electrical switchboard cabinets or cables. In one cable application, the composition may be used as the extruded intermediate material (2) between the conductor (3) and extruded sheath (4).

A laminated fire door including a core, containing panels or boards made from an organic material including flax, and a fibrous binder constituting a sodium silicate adhesive, is used to make a door exhibits at least a 45 minute fire rating. In accordance with a preferred form of the invention, the fire door core is formed by using a silicate adhesive, preferably sodium silicate, in the order of 25 mils (0.6 mm) to laminate together two flax boards, each having a thickness in the range of 0.625-0.875 inches (approximately 16-22 mm), with each of the laminated flax boards having a density of between 20 and 45 pounds per cubic foot (320-700 kgs / m3).

A fire door control system permits user input during regular use and during alarm conditions. The system utilizes primary and secondary power sources and incorporates a variety of preventive safeguards assuring that functionality of the fire door control system will not be lost. The system utilizes primary power when possible in all alarm conditions. However, during alarm conditions when primary power is lost or when a hand crank hoist remains dangerously engaged, the system is bumplessly connected to a secondary power source and a fire door of the system is closed with the aid of a clutch that directly connects the drive input with an axle that supports the fire door. The clutch pulses on and off to control the descent of the door. The system includes an electronic controller for coordinating the operation of elements of the system and for implementing a method of controlling a fire door system.

The present invention provides fiber-reinforced composites, and components for buildings, such as door skins, that include fiber-reinforced composites. Also provided are methods and systems for manufacturing fiber-reinforced composites that may be used in building structures. In an embodiment, the present invention provides a fiber-reinforced composite comprising long fibers of fiberglass and polyurethane produced using long-fiber injection (LFI) technology.

A composite product includes gypsum in an amount of 60 to 90% by weight, fibers in an amount of 1.5 to 26% by weight substantially homogeneously distributed through the composite, and a rheology-modifying agent in an amount of 0.5 to 6% by weight. The composite is caused or allowed to cure to form a cured composite. The cured composite is a fire resistant component used in a fire-rated door core, a fire-rated door or a fire-rated building panel. The fire resistant component may include a building panel, a door panel, a door core, a door rail, a door stile, a door lock block, a door border, or a door insert.

In one embodiment, a closure assembly for a fire door, including a first lead post having a longitudinal cavity located therein, an opening extending through a wall of the first lead post into the longitudinal cavity and a locking member may be positioned within the longitudinal cavity that is configured to obstruct the opening into the longitudinal cavity upon reaching a predetermined temperature, is disclosed. In additional embodiments, fire doors including such closure assemblies and methods of locking fire doors are disclosed.

A fire door control system permits user input during regular use and during alarm conditions. The system utilizes primary and secondary power sources and incorporates a variety of preventive safeguards assuring that functionality of the fire door control system will not be lost. The system utilizes primary power when possible in all alarm conditions. However, during alarm conditions when primary power is lost or when a hand crank hoist remains dangerously engaged, the system is bumplessly connected to a secondary power source and a fire door of the system is closed with the aid of a clutch that directly connects the drive input with an axle that supports the fire door. The clutch pulses on and off to control the descent of the door. The system includes an electronic controller for coordinating the operation of elements of the system and for implementing a method of controlling a fire door system.

The present invention describes an improved building material composition, useful for example as a fire door core and the improved methods of making this composition. More particularly, the building material of the present invention is prepared from a foam aggregate and an aqueous mixture of a cementitious composition that includes at least one of the following components: a cement, an accelerant, or a binder, which composition can be molded and shaped into a fire door core.

Apparatuses and methods are provided for visual inspection across a barrier such as a fire door. In one embodiment of the present invention, a first movable partition is disposed adjacent, and laterally spaced from, a second movable partition. A first vision panel is disposed in the first partition and a second vision panel is disposed in the second partition in substantial alignment with the first vision panel. The position of the first vision panel is substantially constrained with respect to the position of the second vision panel along a first longitudinal direction. The first vision panel and the second vision panel are enabled to exhibit a desired amount of lateral displacement relative to each other.

A door has a core that includes a porous layer having a thickness and two opposing major surfaces. In one construction, the core also includes three fire-retardant layers, and two of the fire-retardant layers are separated by the porous layer. The porous layer and the fire-retardant layers are coupled together. Other constructions include one or more fire-retardant layers in balanced or unbalanced placement around the porous layer.

There is disclosed an engaging / disengaging fail-safe door closing device for a rolling fire door, provided between a power device and a speed reducing device of a door machine, including an electromagnet fixed inside a housing of the door machine and disposed around the outside of a shaft of the power device; a brake device including a shaft sleeve, loosely embracing around the outside of the shaft of the power device and being capable of sliding between the shaft and the electromagnet, on one end of which, there is provided an attracted plate facing the magnet and coming off the magnet by way of the biasing force of an elastic element, while on the other end there is radially formed a brake disk; a driving plate fixed on the shaft of the power device and facing a position where the brake disk is allowed to contact; and a circuit used to control the electromagnet to be electrified to excite in order for actuating the brake when the door reaches a predetermined position, or to release the brake when the power is cut off.

Structural components for a fire door comprising a core and edge banding and other structural components, the components comprising gypsum, expanded perlite, and cement, and having a density between about 60 and 80 lbs. / ft.3. Also, a method by which the structural components are made and a fire door comprising the components.

A self-illuminating fire door includes a door body (10) and a door frame (20), each having a front and a rear sides respectively, includes a self-illuminating member (30) on at least one side of the door body (10) and the door frame (20). The self-illuminating member (30) is made in self-illuminating material and constructed into a block unit, a rod unit or a flat film body unit. The block unit or the rod unit is mounted onto the door body (10) or the door frame (20) at one or both sides. The flat film unit is stick or bonded onto the door body (10) or the door frame (20) at one or both sides. The self-illuminating material is alkaline earth alluminate material, a light-storing type self-illuminating material. The fire door can illuminate under a dark condition or at night, thereby guiding people to exit route to escape from the fire.

A door has a core that includes a porous layer having a thickness and two opposing major surfaces. In one construction, the core also includes three fire-retardant layers, and two of the fire-retardant layers are separated by the porous layer. The porous layer and the fire-retardant layers are coupled together. Other constructions include one or more fire-retardant layers in balanced or unbalanced placement around the porous layer.

Provided are a digital smart safety system, method, and program capable of safely guiding evacuation of people in a facility in case of fire. A digital smart safety system (1000) comprises a smoke determination means (112) that determines a flow direction, volume and speed of smoke based on smoke information detected by a plurality of smoke detection means (234), an air blower that is installed at a smoke diffusion spot including openings such as windows or smoke vents around the exterior, and sets an air blowing direction based on results of determination by the smoke determination means, a fire door detection means (113) that detects that a fire door / fire shutter (228) installed in the facility is not closed, a human detection means (114) that detects a person who has failed to escape in case of fire, and a control means (115) that designates a safe place based on results of determination by the smoke determination means (112) and performs evacuation guidance control to guide evacuation of a person relevant to the facility.

A release mechanism is actuated by the heat of a fire to electrically and mechanically disconnect electrical wiring from an electronic lock having a plastic housing. The electronic lock is mounted on a fire door and as it is heated by a fire on the opposite side of the fire door, mounts that hold the lock melt, releasing the electronic lock to drop away from the fire door and prevent ignition of the plastic housing. The release mechanism may use shape memory alloy wire to contract and disconnect a ribbon cable. Solder connectors may also be used to disconnect wires. Intumescent material that expands when heated is used to drive the lock mechanism away from the fire door and insulation is used to control the timing of melting.

An intumescent strip includes a first material layer and an opposing second material layer. A third material layer, formed from an intumescent material, is positioned between the first and second layers. The intumescent material includes a combination of intumescent particles suspended within a thermoplastic material. The intumescent particles have an activation temperature and are expandable when exposed to temperatures above the activation temperature. The thermoplastic material has a melting temperature that is lower than the activation temperature.

The invention discloses a fire door comprising a door panel, which includes an external covering layer, an inner core layer and a framework. The external covering layer completely covers the framework and the inner core layer; the external covering layer, the inner core layer and the framework of the door panel are wholly shaped by pouring molding; the external covering layer of the door panel is made from inorganic fireproof materials, the framework is made from plywood, and the inner core layer of the door panel is made from one or two of the following materials: rock wool, expanded perlite, and expanded magnesia material; the frame of the fire door is of two-layered structure, wherein the outer layer is made of inorganic fireproof materials and the inner core layer is made of plywood. The invention represents a significant improvement in the fire-protecting performance as well as the overall performance of the fire doors among fire-protecting products and is widely used in industrial and civil buildings.

A fire containment and monitoring system includes a control system that communicates with a fire protection system and an array of alarms, smoke detectors, heat detectors, ventilation dampers, fire dampers, fire doors, and manual call points. The system has particular usefulness for kitchens onboard watercraft, especially large ships, where fire containment is critical to the survivability of the vessel, passengers, crew, and cargo. The control system communicates with the alarms, smoke detectors, heat detectors, ventilation dampers, fire dampers, fire doors, manual call points, and fire protection system, and it initiates a comprehensive list of actions if a smoke detector, a heat detector, or a manual call point is triggered within the monitoring portion of the system.

Disclosed is an incombustible composition for a fire door / wall, the fire door / wall using the incombustible composition, and a method of producing the fire door / wall. The incombustible composition includes 1 to 80 wt % of organic or inorganic fiber, 1 to 80 wt % of fly ash or bottom ash, 1 to 80 wt % of fire-proofing agent, 1 to 30 wt % of curing fire-retardant resin, and 1 to 40 wt % of incombustible hollow filler. Furthermore, the method includes providing the incombustible composition, mixing the fly ash or bottom ash, fire-proofing agent, and curing fire-retardant resin with each other, adding the organic or inorganic fiber into a mixture, shattering the mixture containing the organic or inorganic fiber, mixing an incombustible hollow body with the shattered mixture by use of a mixer using air, pressing the resulting mixture using a high pressure hot press to form a board or a square timber, constructing a frame of the fire door / wall using the board and / or square timber, and embedding an incombustible core material into the fire door / wall. As well, 1 to 70 wt % of the incombustible composition may be made of a waste material. Accordingly, the incombustible composition is advantageous in that the production costs are reduced, and that it is useful as a construction finishing and interior material because no fire and toxic gases occur when the incombustible composition is on fire.

An animal holding facility with automatic evacuation system is disclosed, comprised of an otherwise conventional kennel. Installed inside of the kennel is an automatic fire / smoke / carbon dioxide detection system utilizing a plurality of smoke and / or fire and / or carbon monoxide sensors. An audible alarm activates upon triggering of the sensors. A common fire door open automatically and a hydraulic animal ejection means gently sweeps or guides the animal out of the kennel through the fire exits. A slide is located at the outside entrance to each fire exit. A cushioned pad is located on the bottom of each slide. A fenced-in area is located at the base of each slide, and is designed to retain the animals in a restricted area away from the fire or smoke or carbon monoxide.

A fire door stop system for retrofitting a fire door assembly so as to bring the assembly into compliance with fire safety codes. The fire door stop system has a profile strip that is attachable to a fire door frame. An edge of the profile strip extends outward from the frame in a line with a face of the soffit against which the pull edge of the fire door closes. The fire door stop system further includes, as needed, edge protectors for a wood fire door, such as a horizontal edge protector, a vertical edge protector, and a bottom-edge extender, and a latch protector.

The invention discloses a green fire door core, a manufacturing method of the green fire door core and a fire door. By quality percent, the preparation materials of the green fire door core comprise magnesium oxide 15-40%, magnesium salt 15-35%, vesicant 0.5-5%, glass fiber 1.5-5%, assistant 2-10%, perlite composition 16-30%, and water 20-45%. Door core slurry can be directly filled into a door core frame, gaps and filling dead angles do not exist in the door core frame, the whole function of fire resistance and heat insulation is improved, and the door core is in accordance with A1 level fire protection standard of GB8624-2006. The door core can be relatively strong bound to a wood door panel and steel door pane, and glue is not needed or just a little. Bond strength can be kept still in the oxidation burning atmosphere of 750-1000 DEG c. Due to the fact that chloride does not overflow out of the surface of the door core, the capacity of rust resistance of the steel door panel is greatly improved. The door core has the advantages of preventing a wood door from mildewing, can not release hydrochloric acid (HCL) toxic cloud in the burning atmosphere and is green and environment-friendly.

An Internet facilitated fire safety system and real time monitoring system is disclosed. The fire safety system comprises a plurality of smart fire safety devices and equipment, including fire extinguishers, hose reels, fire doors, exit lights, emergency lights, sprinkler tank and sprinkler system, system to monitor CO2 and / or carbon monoxide level, and the likes. Each of these device and equipment is connected by an IOT interface device and a wireless gateway to computer servers an electronic communications network. The IOT interface devices have a plurality of sensors to detect the operational condition of that safety device and equipment. data obtained from the sensors are analyzed and interpreted through software and algorithms by servers in the system. Since each fire safety device and equipment is electronically connected, it would be transmitting data and information on its operational status in real time and 24 / 7.