Abstract: A suppression unit includes a nozzle, an actuator piston, a casing, and a biasing device. The nozzle has an exterior surface, an interior bore extending along a longitudinal axis, and a plurality of discharge orifices passing from the interior bore to the exterior surface. The actuator piston includes an interior channel in fluid communication with the interior bore, the nozzle separably attached to the actuator piston. The actuator piston and the nozzle are disposed within the casing and the biasing device is compressible between the actuator piston and the casing. The discharge orifices are protected by the casing in a biased passive condition of the nozzle, and the discharge orifices are moved longitudinally out of the casing in an active condition of the nozzle.

Abstract: A water mist nozzle (2) for a fire suppression system comprises a nozzle head (4) including a discharge nozzle (6) for supplying a fluid jet (12); a support structure (8); and a stationary deflector element (10). The stationary deflector element (10) is fastened to the support structure (8) and comprises a body with a substantially round outer periphery having a base portion (28) and a substantially conical upper portion (22) with a central peak (24). The substantially conical upper portion (22) provides a plurality of flowpaths (26), the flowpaths (26) extending substantially radially from a radial position close to the central peak (24) in a direction towards the outer periphery, the flowpaths (26) having at least one portion (26a, 26b, 26c) of decreasing slope, in which the slope of the bottom of the flowpaths (26) decreases along the flow direction towards the outer periphery.

Abstract: A suppression unit includes a nozzle, a casing, and a biasing device. The nozzle includes an exterior surface, an interior bore extending along a longitudinal axis, and a plurality of discharge orifices passing from the interior bore to the exterior surface. The casing includes an interior surface and an exterior surface. The nozzle is disposed within the casing. The discharge orifices are covered by the casing in a biased passive condition of the nozzle, and the discharge orifices are moved longitudinally out of the casing in an active condition of the nozzle. The biasing device is disposed in a spring chamber between the nozzle and the casing. The spring chamber is fluidically isolated from the nozzle in the active and passive conditions.

Abstract: An exemplary fire suppression sprinkler includes a housing (22) that establishes a flow path for discharging fire suppression fluid. A water seat (28) is configured to block the flow path. A polymer seal (30) is supported within the housing (22) and engages the water seat (28) for sealing an interface between the flow path and the water seat (28). A spring member (40) biases the polymer seal (30) into engagement with the water seat (28).

Abstract: A water mist nozzle (2) for a fire suppression system comprises a nozzle head (4) including a discharge nozzle (6) for supplying a fluid jet (12); a support structure (8); and a stationary deflector element (10). The stationary deflector element (10) is fastened to the support structure (8) and comprises a body with a substantially round outer periphery having a base portion (28) and a substantially conical upper portion (22) with a central peak (24). The substantially conical upper portion (22) provides a plurality of flowpaths (26), the flowpaths (26) extending substantially radially from a radial position close to the central peak (24) in a direction towards the outer periphery, the flowpaths (26) having at least one portion (26a, 26b, 26c) of decreasing slope, in which the slope of the bottom of the flowpaths (26) decreases along the flow direction towards the outer periphery.

Abstract: A suppression unit includes a nozzle, a casing, and a biasing device. The nozzle includes an exterior surface, an interior bore extending along a longitudinal axis, and a plurality of discharge orifices passing from the interior bore to the exterior surface. The casing includes an interior surface and an exterior surface. The nozzle is disposed within the casing. The discharge orifices are covered by the casing in a biased passive condition of the nozzle, and the discharge orifices are moved longitudinally out of the casing in an active condition of the nozzle. The biasing device is disposed in a spring chamber between the nozzle and the casing. The spring chamber is fluidically isolated from the nozzle in the active and passive conditions.

Abstract: A suppression unit includes a nozzle, an actuator piston, a casing, and a biasing device. The nozzle has an exterior surface, an interior bore extending along a longitudinal axis, and a plurality of discharge orifices passing from the interior bore to the exterior surface. The actuator piston includes an interior channel in fluid communication with the interior bore, the nozzle separably attached to the actuator piston. The actuator piston and the nozzle are disposed within the casing and the biasing device is compress ible between the actuator piston and the casing. The discharge orifices are protected by the casing in a biased passive condition of the nozzle, and the discharge orifices are moved longitudinally out of the casing in an active condition of the nozzle.

Abstract: A fire suppression system of an airflow system includes an airflow passage having an inlet and an outlet configured to provide an airflow path from the inlet to the outlet to exhaust air therethrough and a dispensing system is located within the airflow passage proximal to the inlet and configured to dispense a water mist discharge from within the airflow passage toward the inlet to form a water mist discharge sufficient to disrupt an airflow into the airflow passage.

Abstract: A fire suppression sprinkler assembly coupled to a mounting surface includes a sprinkler having a heat responsive element arranged adjacent a first end. A cover plate is positioned adjacent the heat responsive element and includes a thermally conductive cover layer. A reflective shield has a reflective interior surface. The reflective shield is positioned substantially opposite the cover plate adjacent the first end of the sprinkler such that heat reflects from the top plate towards the heat responsive element.

Abstract: A water seat is provided for use in a fire suppression sprinkler. The water seat is movable between an inactive position and an active position. The water seat includes a generally polygonal guiding surface in limited contact with the sprinkler. The water seat is slidable relative to the sprinkler when corrosion residue is present within the sprinkler. A sealing surface is positioned adjacent the polygonal guiding surface and forms a line contact seal at an interface with the sprinkler when the water seat is in an active position. The water seat also includes a guiding portion adjacent the sealing surface and opposite the polygonal guiding surface. The combination of the guiding surface and the guiding portion maintain a generally parallel orientation of the water seat relative to the sprinkler when the water seat moves from an inactive position to an active position.

Abstract: A water mist fire suppression device includes a nozzle body disposed about a central axis. Also included a nozzle arrangement configured to expel water. The nozzle arrangement includes an annular groove. The nozzle arrangement also includes a micro nozzle extending from a water plenum to the annular groove, wherein the micro nozzle is angularly oriented from the central axis. The nozzle further includes a deflector lip located proximate an outlet of the nozzle, wherein the deflector lip is positioned to contact water exiting the outlet of the nozzle arrangement.

Abstract: An apparatus and method are provided for maintaining a standby pressure in a fire suppression system. The fire suppression system includes at least on spray head and a drive source coupled to the at least one spray head by a supply line. The supply lines delivers extinguishing medium to the spray head. The drive source maintains a standby pressure of the extinguishing medium in the supply line when the system is inactive. A release line is coupled at a first end to the supply line. The release line includes a thermal expansion assembly. When the system is inactive and the standby pressure exceeds a first threshold, the thermal expansion assembly releases extinguishing medium from the system to reduce the standby pressure. When the system is active and the standby pressure exceeds the first threshold, the thermal expansion assembly does not release extinguishing medium from the system.

Abstract: A fire suppression sprinkler assembly coupled to a mounting surface includes a sprinkler having a heat responsive element arranged adjacent a first end. A cover plate is positioned adjacent the heat responsive element and includes a thermally conductive cover layer. A reflective shield has a reflective interior surface. The reflective shield is positioned substantially opposite the cover plate adjacent the first end of the sprinkler such that heat reflects from the top plate towards the heat responsive element.

Abstract: An exemplary method of fire suppression includes introducing a fire suppression fluid into an area by directing the fire suppression fluid along a primary trajectory that is aimed directly at a generally horizontal surface in the area.

Abstract: An exemplary fire suppression sprinkler includes a housing (22) that establishes a flow path for discharging fire suppression fluid. A water seat (28) is configured to block the flow path. A polymer seal (30) is supported within the housing (22) and engages the water seat (28) for sealing an interface between the flow path and the water seat (28). A spring member (40) biases the polymer seal (30) into engagement with the water seat (28).

Abstract: A water seat is provided for use in a fire suppression sprinkler. The water seat is movable between an inactive position and an active position. The water seat includes a generally polygonal guiding surface in limited contact with the sprinkler. The water seat is slidable relative to the sprinkler when corrosion residue is present within the sprinkler. A sealing surface is positioned adjacent the polygonal guiding surface and forms a line contact seal at an interface with the sprinkler when the water seat is in an active position. The water seat also includes a guiding portion adjacent the sealing surface and opposite the polygonal guiding surface. The combination of the guiding surface and the guiding portion maintain a generally parallel orientation of the water seat relative to the sprinkler when the water seat moves from an inactive position to an active position.

Abstract: An integrated dental care apparatus includes a patient chair and a dental care unit. The dental care unit is mounted on a floor while the dental care unit and the patient chair are structurally connected by a structure which supports the patient chair. Both the dental care unit and the patient chair have means for enabling them to be turned in relation to a vertical axis.

Abstract: A device for providing the edge of a starting sheet of an electrode used in the electrolytic refining or recovery of metals with a dielectric part comprises a die space, in which the edge of the starting sheet of the electrode can at least partly be fitted, and a feeding device of the dielectric material for feeding the dielectric material into the die space. The device comprises changing members of the volume of the die space for pressing the dielectric material in the die space to that edge of the starting sheet of the electrode, which is at least partly fitted in the die space.

Abstract: The invention relates to a dental unit and a method for feeding water to instruments and/or to other water outlet points of a dental unit. The object of the invention is to enable keeping pressure of the water lines of a dental unit essentially stable, especially also when the relatively stable pressure typical for public water systems cannot be taken advantage of because of potential backflow of water contaminated at the point of use to the public water system. According to the invention there is arranged a pressure chamber (12) to the feed water line (10) of a dental unit, the said pressure chamber (12) being arranged in functional connection with pressure control means (14, 15), and upstream of the said pressure chamber (12) a pump (13), which is arranged to be able to pump water to the said pressure chamber (12) also when it is pressurized.

Abstract: A device for providing the edge of a starting sheet of an electrode used in the electrolytic refining or recovery of metals with a dielectric part comprises a die space, in which the edge of the starting sheet of the electrode can at least partly be fitted, and a feeding device of the dielectric material for feeding the dielectric material into the die space. The device comprises changing members of the volume of the die space for pressing the dielectric material in the die space to that edge of the starting sheet of the electrode, which is at least partly fitted in the die space.