Abstract: A door actuator linkage includes a lever extending along a longitudinal axis, which merges into a linkage head with an offset, wherein the linkage head is formed for rotationally fixed mounting on an output shaft of a door actuator, wherein a free space for cable routing is formed by the offset. The free space is delimited by the linkage head and by an offset surface of the lever, wherein the lever protrudes up to an imaginary boundary surface, which is defined perpendicular to the longitudinal axis. The offset surface is withdrawn partially from this boundary surface in order to expand the free space.

Abstract: A fire protection fastening device for fastening a door actuator, includes a frame with a back side, which is to be oriented to a mounting surface, in particular to a door, casing or wall, wherein a mounting axis is defined vertically to the back side. The frame is formed for arrangement between a door actuator and the mounting surface or is an integral component of the door actuator (102), at least one reaction chamber formed in the frame, wherein the frame delimits the reaction chamber on the entire circumference. The reaction chamber is open on the back side and/or on a front side of the frame opposite the back side. The device further includes a drive element made from thermally intumescent material disposed in the reaction chamber and, when activated, is formed for pushing away the door actuator from the mounting surface.

Abstract: A backplate for a door actuator, includes at least two mounting elements, one of the two mounting elements being formed for fastening to a mounting surface, in particular door, casing or wall, and the other mounting element for accommodating the door actuator. The backplate further includes at least one connecting assembly with a bar element mobile disposed at the first mounting element and a thermally activatable trigger element. The bar element is movable from a retaining position to a release position. In the retaining position, the bar element retains the second mounting element and, in the release position, releases the second mounting element. When thermally activated, the trigger element releases a movement of the bar element to the release position and/or, the trigger element moves the bar element to the release position.

Abstract: A door actuator for opening and/or closing a door, includes a fluid housing with an inner compartment, which is filled with fluid, in particular hydraulic oil, a fluid housing opening in the fluid housing for draining the fluid at thermal overload, a thermally activatable valve for opening, which closes the fluid housing opening, and a collecting device, which is disposed outside the fluid housing opposite the fluid housing opening, forms a collecting space for the fluid, is open towards the fluid housing opening, and includes at least one drain opening for draining the fluid from the collecting space.

Abstract: A temperature activated door spring device includes a spring having a coil with a contiguous upper arm and lower arm. The coil includes an inner hinge pin hole and has a circumferential edge sized to mount on the top of a hinge knuckle. A collar is affixed within the inner hinge pin hole wherein the inner hinge pin hole is encompassed by the collar sized to accept an inserted hinge pin. A pellet hole is located proximate an extended end of the upper arm, wherein the pellet hole is sized to accept a fusible pellet. An upper portion of the pellet hole traverses through the upper arm and a lower portion of the pellet hole traverses through the lower arm so that when a fusible pellet is inserted into the pellet hole it holds the upper arm and the lower arm together in a spring loaded position.

Abstract: Methods and systems for generating a response to detecting a fire on a property are provided. In certain aspects, a smart home controller (or other smart controller) may analyze data received from smart devices disposed on, within, or proximate to a property. If it is determined that a fire is present on the premises of the property, the smart home controller may determine a location of the fire as compared to the smart devices. The smart home controller may then generate and transmit instructions causing a portion of the smart devices to perform a set of actions to mitigate risks associated with the presence of the fire on the property. The smart home controller may also compare the location of the fire with a location of an occupant, and generate an escape route for the occupant. Insurance policies, premiums, or discounts may be adjusted based upon the fire response/mitigation functionality.

Abstract: A hydraulic door closer capable of reducing oil-pressure therein at high temperature, comprises a housing with an oil chamber, an oil storage cavity, and a piston in the housing of the hydraulic door closer. The oil storage cavity is in communication with the oil chamber; when the oil temperature increases, hydraulic oil in the oil chamber and oil storage cavity generates an increased oil pressure move the piston, whereby volume of the oil storage cavity is enlarged, such that oil from the chamber will flow into the cavity, to reduce the oil pressure of the chamber and cavity. When the oil temperature decreases, the oil pressure in the chamber and cavity is reduced, whereby the storage piston restores its original position, whereby volume of the cavity will be reduced, and the oil in the cavity flows back into the chamber. The pressure in the oil chamber is reduced when the hydraulic oil expands due to increased temperature to prevent failure of the seal and to avoid hydraulic oil leakage.

Abstract: A hydraulic door closer capable of reducing oil-pressure therein at high temperature, comprises a housing with an oil chamber, an oil storage cavity, and a piston in the housing of the hydraulic door closer. The oil storage cavity is in communication with the oil chamber; when the oil temperature increases, hydraulic oil in the oil chamber and oil storage cavity generates an increased oil pressure move the piston, whereby volume of the oil storage cavity is enlarged, such that oil from the chamber will flow into the cavity, to reduce the oil pressure of the chamber and cavity. When the oil temperature decreases, the oil pressure in the chamber and cavity is reduced, whereby the storage piston restores its original position, whereby volume of the cavity will be reduced, and the oil in the cavity flows back into the chamber. The pressure in the oil chamber is reduced when the hydraulic oil expands due to increased temperature to prevent failure of the seal and to avoid hydraulic oil leakage.

Abstract: An automatic fire door closing device includes a hydraulic main engine, an arm rod, a rotating shaft, a connecting plate and a clamping device, and further comprises a fire monitoring and response device and a driving device. The driving device includes a linkage rod rotatably connected to the connecting plate, a transmission column rotatably connected to the connecting plate, and a transmission rod fixedly connected to the transmission column, one end of the linkage rod has a hook part for hooking the transmission rod, and the transmission column cooperates with the clamping device, when smoke or open fire is monitored, the hook part of the linkage rod is disengaged from the transmission rod, and the rotation of the transmission column makes the clamping device to release the rotating shaft. The device reduces cost with simple structure, high integration and low installation difficulty.

Abstract: Methods and systems for generating a response to detecting a fire on a property are provided. In certain aspects, a smart home controller (or other smart controller) may analyze data received from smart devices disposed on, within, or proximate to a property. If it is determined that a fire is present on the premises of the property, the smart home controller may determine a location of the fire as compared to the smart devices. The smart home controller may then generate and transmit instructions causing a portion of the smart devices to perform a set of actions to mitigate risks associated with the presence of the fire on the property. The smart home controller may also compare the location of the fire with a location of an occupant, and generate an escape route for the occupant. Insurance policies, premiums, or discounts may be adjusted based upon the fire response/mitigation functionality.

Abstract: The present invention relates to the technical field of door closers, and particularly discloses an electromagnetic release door closer. The electromagnetic release door closer comprises a door closer body, a slide rail, and a rocker arm, one end of the rocker arm is articulated with the door closer body, wherein the slide rail is provided with a slide groove and a slide cavity which are parallel to each other, a through slot which is parallel to the slide groove is arranged between the slide groove and the slide cavity, wherein an electromagnetic limiting mechanism can be fixed at any position in the slide cavity.

Abstract: Methods and systems for generating a response to detecting a fire on a property are provided. In certain aspects, a smart home controller (or other smart controller) may analyze data received from smart devices disposed on, within, or proximate to a property. If it is determined that a fire is present on the premises of the property, the smart home controller may determine a location of the fire as compared to the smart devices. The smart home controller may then generate and transmit instructions causing a portion of the smart devices to perform a set of actions to mitigate risks associated with the presence of the fire on the property. The smart home controller may also compare the location of the fire with a location of an occupant, and generate an escape route for the occupant. Insurance policies, premiums, or discounts may be adjusted based upon the fire response/mitigation functionality.

Abstract: A door closer including: a body defining a chamber therein; a piston slidably supported within the chamber, and dividing the chamber into first and second cavities either side of the piston, which in use receive liquid; a biasing device for biasing the piston towards the first cavity; a passageway connecting the first cavity to the second cavity for permitting the flow of fluid therebetween; a blocking member for controlling the flow of liquid through the passageway between the cavities; a moveable member moveable between first and second positions, wherein when the moveable member is in its first position the moveable member causes or permits the blocking member to assume a blocking position, thus preventing or at least inhibiting the flow of liquid from the first to the second cavity, and wherein when the moveable member is in its second position the moveable member causes or permits the blocking member to assume a non-blocking position, thus permitting the flow of liquid from the first to the second cavity

Abstract: A door closer having a closer body 1 housing an electrical actuator 20 connected to one or more electrical connectors, such as plugs 24, each of which may be located in two or more different positions on the closer body to facilitate connection of the closer to an electrical circuit when the closer is mounted in different orientations, without providing a greater number of electrical connectors. The closer body may have a rotary shaft 7 connected to a door control arm 9, a first latch member 6 mounted relative to the closer body and a second latch member 29 mounted relative to the rotary shaft, the second latch member being arranged to engage with the first latch member to arrest rotation of the rotary shaft to latch the rotary shaft in a desired position. A mounting structure 8 connects the control arm and enables the angle between the control arm and the second latch member to be varied between 0 and at least 90 degrees.

Abstract: This disclosure is generally directed to a hydraulic door closer, and more specifically is directed to a hydraulic storm or screen door closer that has a fluid overflow chamber providing fluid volume and pressure control for both expanded and contracted fluid at different temperatures. The disclosed hydraulic door closer comprises a fluid overflow chamber adapted to hold sufficient fluid to maintain required operating fluid or oil levels at different temperatures, and to ensure proper closer performance under both extreme high and low temperature conditions.

Abstract: An actuation system for automatic actuation of at least one element covering an opening of a household appliance. The actuation system includes at least one actuation element constituted by at least one shape memory alloy element. The actuation system is adapted to actuate the element when applying heat to the actuation element.

Abstract: A rotary magnetic damper comprises a first, rotary damper element, a second, static damper element and a rotary input coupled to the rotary damper element. The coupling between the input and the rotary damper element is such that rotation of the rotary input causes the rotary damper element to progressively magnetically engage the static damper element whereby to progressively increase a damping force created by the damper. The rotary damper element may be a magnet or magnets mounted on a carrier which threadingly engages a screw driving element such that as the input rotates the carrier, it and the rotary damper element translate axially along the screw driving element towards the static damper element.

Abstract: Methods and systems for generating a response to detecting a fire on a property are provided. In certain aspects, a smart home controller (or other smart controller) may analyze data received from smart devices disposed on, within, or proximate to a property. If it is determined that a fire is present on the premises of the property, the smart home controller may determine a location of the fire as compared to the smart devices. The smart home controller may then generate and transmit instructions causing a portion of the smart devices to perform a set of actions to mitigate risks associated with the presence of the fire on the property. The smart home controller may also compare the location of the fire with a location of an occupant, and generate an escape route for the occupant. Insurance policies, premiums, or discounts may be adjusted based upon the fire response/mitigation functionality.

Abstract: A blocking structure of an anti-fire door lock includes a latch set, a blocking pin set and a blocking base, wherein the latch set comprises a lock base and a latch that pivotally connected to the lock base. The blocking pin set disposed in an accommodating hole of the latch comprises a blocking pin and an elastic member, and the blocking base comprises a constraining slot. The elastic member is used for pushing the blocking pin to move and making the blocking pin to lodge into the constraining slot to prevent an anti-fire door from being opened.

Abstract: In a door fitting for the upper guidance of sliding doors, which door fitting comprises a base body and at least one support element which is releasably connected to the base body, the base body and the support element are interconnected by means of two spaced joint areas. The first joint area comprises a snap-in connection with a certain pivoting capability. The second joint area includes a push joint with an axial degree of freedom which is oriented tangentially with respect to an imaginary co-axial cylinder extending around the pivot axis of the first joint area and parallel to the installation direction of the snap-in connection.

Abstract: A wafer container for holding a spaced stack of thin wafers, comprising an H-bar carrier, a base portion for receiving same, a base wafer cushion attached at the bottom wall positioned below the H-bar carrier, the cushion having a plurality of ribs defining slots each with a bottom wafer seating region having a curvature and a pair of ends, each of the ends having a flare whereby the seating region flares outwardly at the ends, a cover portion that connects with the base portion to form a closed interior. The cover portion having an uppermost wall a wafer cushion secured thereto. The cover wafer cushion having a row of wafer engaging finger portions, the finger portions Y shaped and having two legs extending from a support portion and alternatingly extending from opposing support portions, the finger portions may be S shaped with a wafer pad flared in two direction.

Abstract: 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.

Abstract: Quick-release control systems for architectural opening coverings and associated control systems and methods for rapidly deploying the coverings to extended positions. In one embodiment coupling assemblies are provided for controllably coupling and decoupling portions of lifting mechanisms in a variety of covering systems, including roller and cellular shade systems. In yet other embodiments, control systems for controlling a plurality of coverings are provided, which may be configured to remotely and simultaneously deploying each of the plurality of coverings to an extended position in response to a trigger signal.

Abstract: A hinge for rotatably coupling an appliance door with an appliance body includes a housing affixable within the door. An input arm is rotatably coupled to the housing and is affixable with the appliance body. A spring is operably engaged between the housing and the input arm to apply a balancing torque to the input arm relative to the housing. A first magnet is fixed relative to the housing and a second magnet is operatively coupled with the input arm such that rotation of the input arm with respect to the housing moves the second magnet axially with respect to the first magnet. The magnets have a mutual attraction between each other that is operable to apply a closing torque to the input arm relative to the housing. The balancing force decreases with movement of the input arm from the second position toward the first position.

Abstract: A closures mechanism for a door actuated during a fire, which causes the door to automatically close. The present invention provides a hinge with opposing hinge plates comprising a door leaf and a frame leaf each pivotal around a hinge pin and spring. A hinge spring nub is anchored within a channel having a fusible block that prevents the spring nub and tension from traveling the channel. At a predetermined temperature the fusible block ruptures causing the spring nub and spring tension to move into engagement with the door attached to the hinge door leaf thereby causing the door to close by means of the tensioned spring's kinetic energy.

Abstract: A fusible link is described comprising a first member selectively coupled to a second member via a connection member. The connection member is retained by way of first and second stop members that are defined in the second member and bear against the connection member and the first member.

Abstract: A closures mechanism for a door actuated during a fire, which causes the door to automatically close. The present invention provides a hinge with opposing hinge plates comprising a door leaf and a frame leaf each pivotal around a hinge pin and spring. A hinge spring nub is anchored within a channel having a fusible block that prevents the spring nub and tension from traveling the channel. At a predetermined temperature the fusible block ruptures causing the spring nub and spring tension to move into engagement with the door attached to the hinge door leaf thereby causing the door to close by means of the tensioned spring's kinetic energy.

Abstract: Latching apparatus for use with a fire damper assembly wherein extendable and retractable damper leaves normally are maintained by a fusible linkage in a position enabling air to flow through a duct. The fusible linkage may be coupled to and uncoupled from a damper-supporting frame so as to facilitate testing of the damper assembly to ensure it is capable of automatically moving from its passage-open position to a passage-closed position in response to a predetermined rise in ambient temperature. The latching mechanism is operable simply by squeezing a spring retainer to enable it to pass into and out of latched engagement with a latch keeper.

Abstract: A door actuating system for the leaf of a fire door includes a safety fuse that detaches the fixture between the housing of the door actuating system and an arm on the door or the door frame, which then falls on the floor and are no longer in contact with the hot surface of the door. Plastic screws and plastic bushings accomodating metals screws or assembly plates made of plastic or similar materials can be used as the safety fuse.

Abstract: A mechanical dual temperature damper closing mechanism having a primary link that separates when the ambient temperature reaches approximately 74° F., closing the damper. The new mechanism provides a reliable means for reopening the damper to allow airflow for the control of smoke spread. A secondary link is engaged within the new mechanism to reopen the damper. When the ambient temperature reaches 180° F. the secondary link separates, closes the damper such that it cannot be reopened.