Abstract: A showerhead includes a flow device and a flow distribution member. The flow device is configured to produce a substantially laminar fluid stream. The flow distribution member is coupled to the flow device and is spaced apart from the flow device. The flow distribution member is configured to receive the substantially laminar fluid stream from the flow device and to produce a distributed fluid flow.

Abstract: Rotary nozzles are provided that produce multiple discrete water streams for the irrigation of a substantially rectangular irrigation area. The nozzles may be designed to function as one of a left corner strip nozzle, right corner strip nozzle, and side strip nozzle. Each nozzle includes a particular type of nozzle housing with multiple flow channels oriented to irrigate a rectangular area in a certain position relative to the nozzle. The side strip nozzle includes one or more groups of two flow channels that are asymmetric with respect to one another. Further, each nozzle includes a deflector that rotates in either a clockwise or counterclockwise direction, depending on the position of the rectangular irrigation area relative to the nozzle. By matching deflector rotation with the position of the rectangular irrigation area, the uniformity of irrigation within the rectangular irrigation area can be increased.

Abstract: A fire protection sprinkler including a sprinkler frame including a body defining a passage therethrough with an inlet opening and an outlet opening, a pair of frame arms extend from the body and support a deflector boss having a pair of concave arcuate sidewalls that join to form a pointed edge proximal the outlet opening. The arcuate sidewalls taper laterally away from a reference plane in a distal direction from the outlet opening.

Abstract: A jet regulator (1), including an annular or sheath-shaped jet regulator housing (2), the outlet end face (3) of which is designed as a hole structure, grate structure, and/or mesh structure having passage openings (6) surrounded by flow-guiding walls, wherein the hole structure, grate structure, and/or mesh structure on the outlet end face is made of a manually deformable, dimensionally elastic plastic material (7) at least in some sections and at least at the surface. The jet regulator (1) according to the invention is characterized in that the outlet end face (3) of the jet regulator housing (2) is designed as an outlet disk (8) that can be inserted into the jet regulator housing (2) and that supports the hole structure, grate structure, and/or mesh structure.

Abstract: Various mist-type fire protection systems for the protection of light and ordinary hazard occupancies of reduced water demand as compared to known mist type systems or sprinkler systems configured to protect the same occupancies. Three system configurations are defined by varying design criteria for the installation of: mist devices having an enlarged coverage area alone or in combination with known nozzles or sprinklers. The preferred mist devices provide for the protection of at least one of a light hazard occupancy only and a light and ordinary hazard occupancy having a ceiling with a maximum ceiling height of at least 8 ft. The preferred device include a body having a passageway defining a K-factor of less than 1 gpm/psi1/2. The preferred device includes means for diffusing the fluid at a flux density of less than 0.1 gpm/sq. ft. for a fluid pressure at the inlet of less than 500 psi. to define a coverage area of the device of over than 132 sq. ft., preferably to a maximum of 256 sq. ft.

Abstract: A sprinkler assembly having a base including a passageway, an inlet opening communicating with a pressurized fluid source, an outlet opening for outputting a flow of pressurized fluid along a flow path, and an axis extending through the outlet opening. The sprinkler assembly further comprises a top engaging the base and a deployment assembly supporting a flow shaper assembly. The deployment assembly is movably mounted to either the base or the top and is movable horizontally between a retracted position and an extended position for dispersing the pressurized fluid from the outlet opening. A heat responsive trigger is mounted to releasably retain the deployment assembly within the retracted position.

Abstract: An oil cooled generator may have stator windings with first portions in contact with a stator core and second non-contact portions. One or more nozzles may be configured to provide a spray pattern of oil which impinges on the non-contact portions even though the nozzles may have orifices oriented so that the lines projected in alignment with longitudinal axes of the orifices do not intersect the non-contact portions of the stator windings.

Abstract: An attic fire protection system is provided. The system comprises a fluid supply manifold for supplying a fluid, positioned at an effective height below and parallel to the underside of a roof having a non-zero pitch angle. The system contains a plurality of fittings each having at least one exit port for directing the flow of the fluid, the fittings being spaced within at most a maximum effective distance apart from each other and being connected to receive fluid from the supply manifold, wherein the exit ports are structured to supply the fluid in a direction parallel to the underside of the roof. Most broadly, however, the fittings are structured or arranged to supply the fluid in a direction forming an oblique angle with the horizontal and the vertical, which may or may be exactly the same as the pitch angle of the roof. The system also includes a plurality of horizontal sidewall sprinklers each connected to a respective exit port of one or another of the fittings.

Abstract: A fuel injector includes a fuel delivery tube; a plurality of pre-mixing tubes, each pre-mixing tube comprising at least one fuel injection hole; an upstream tube support plate that supports upstream ends of the plurality of pre-mixing tubes; a downstream tube support plate that supports downstream ends of the plurality of pre-mixing tubes; an outer wall connecting the upstream tube support plate and the downstream tube support plate and defining a plenum therewith; and a baffle provided in the plenum. The baffle includes a radial portion. A fuel delivered in the upstream direction by the fuel delivery tube is directed radially outwardly in the plenum between the radial portion of the baffle and the downstream tube support plate, then in the downstream direction around an outer edge portion of the radial portion, and then radially inwardly between the radial portion and the upstream tube support plate.

Abstract: A fuel injection valve of an internal combustion engine includes a measuring plate that has at least one injection hole. Fuel that has flowed along an inner wall surface of the measuring plate flows into the injection hole through an injection hole entrance that is formed in the inner wall surface of the measuring plate, passes through the injection hole, and is injected through an injection hole exit that is formed in an outer wall surface of the measuring plate. A recess is formed from an injection hole entrance rim to an injection hole exit rim in an upstream section of the inner wall surface of the injection hole in a fuel flow direction along the inner wall surface of the measuring plate.

Abstract: A device for automatically flushing a dead-end of an underground municipal water distribution system includes an inlet for receiving pressurized water from the water distribution system, an outlet fluidly connected to the inlet conduit for discharging pressurized water from the inlet, and a control valve for controlling the flow of pressurized water between the inlet and the outlet. A housing surrounding the outlet redirects the water radially outwardly. An upper mounting plate locates the device within the housing. The upper mounting plate is mounted to an in-ground enclosure; releasing the upper mounting plate from the enclosure allows pulling the device from the underground water distribution system entirely from above.

Abstract: A spray nozzle includes an orifice disposed on a substantially planar discharge surface. An impingement surface is disposed opposite the orifice, the impingement surface forming an angle with a centerline of the orifice. A deflection ridge bridges a gap between the impingement surface and the discharge surface. Adjacent the deflection ridge is a further trough which extends into the impingement surface. The nozzle includes a fluid fitting adapted for providing a pressurized fluid to the orifice.

Abstract: The invention provides an improved miniature spray device (100) for providing uniform water distribution over a designated area surrounding the device (100). The spray device (100) comprises a spray plate (130) which is provided with a water dispersion surface (131) which is preferably cone shaped, a water outlet (120) for directing a stream of water from a pressurized source towards a central region of the spray plate (130), a support frame (150) for holding the spray plate (130) in spaced apart relation to and in alignment with the water outlet (120), wherein the water dispersion surface (131) is provided with flow deflection means (132, 133, 134) for changing the direction of flow of the water as it flows over the surface (131) to produce a substantially uniformly distributed spray pattern.

Abstract: An inflation nozzle for inflating an inflatable structure. The inflation nozzle includes a nozzle body, a probe, and a connection portion. The nozzle body defines a nozzle channel therethrough, and the channel has a channel outlet for expelling a fluid therefrom. The probe extends from the nozzle body adjacent and beyond the channel outlet, and is configured and dimensioned to facilitate positioning an inflation aperture of the flexible structure onto the nozzle body for directing fluid into the inflation aperture. The connection portion associates with the nozzle body for fluidly connecting the channel to a fluid source for delivering fluid through the channel to inflate the flexible structure.

Abstract: A pendant sprinkler preferably includes a body having an inner surface defining a passageway. The passageway includes an inlet and an outlet spaced apart along the longitudinal axis and defines a K-factor of about 5. The sprinkler also includes a closure assembly adjacent the outlet to occlude the outlet and a thermally responsive support means for maintaining the closure assembly adjacent the outlet. Also provided are means for distributing a flow of fluid over a protection area ranging from about 144 square feet to about 400 square feet, the fluid distribution having a density of at least 0.05 gallons per minute per square foot (0.05 gpm/ft2) so as to define a range of minimum operating pressures ranging from about seven pounds per square inch to about seventeen pounds per square inch (7-17 psi.) and a range of minimum operating fluid flows ranging from about thirteen gallons per minute to about twenty gallons per minute (13-20 gpm.).

Abstract: A spray nozzle includes an orifice disposed on a substantially planar discharge surface. An impingement surface is disposed opposite the orifice, the impingement surface forming an angle with a centerline of the orifice. The angle between the orifice centerline and the surface is less than 90 degrees. A deflection ridge bridges a gap between the impingement surface and the discharge surface. The deflection ridge encompasses a partial circumference of the nozzle. The nozzle includes a fluid fitting adapted for providing a pressurized fluid to the orifice.

Abstract: A liquid atomizer for agricultural use includes at least one canal in fluid communication via a chamber with an outlet. At least a section of the canal extends along a straight line and tangentially opens into the chamber.

Abstract: A fuel dispensing nozzle system including a spout configured to dispense fuel flowing therethrough, and a flow shaper positioned in the spout such that fuel flowing through the spout passes through the flow shaper. The flow shaper includes a central cavity and a plurality of outer cavities positioned about the central cavity. The central cavity and the plurality of outer cavities each have a L/D ratio, wherein the L/D ratio of the central cavity is less than the L/D ratio of each of the outer cavities.

Abstract: A pendent residential fire prevention sprinkler has a frame structure extending from the sprinkler body, and a system for blocking an outlet to prevent fluid from passing through the outlet until occurrence of a predetermined condition and for unblocking the outlet in response to occurrence of the condition. A deflector is supported by the frame structure at a predetermined distance from the outlet, at a position to be impinged upon by the fluid leaving the outlet. The deflector has a central portion and a peripheral portion, and slots formed in the periphery, defining tines therebetween. The slots include a first plurality of slots, each of which extends inward from the deflector periphery with a uniform width, a second plurality of slots, each of which has a first portion and a second portion between the deflector periphery and the slot's closed end, where the first portion has a width that varies at different points, while the second portion has a uniform width.

Abstract: An extended coverage sidewall automatic fire sprinkler includes a generally tubular body with a central passageway and a central axis. One end of the passageway forms an outlet at one end of the tubular body. A closure at the one end of the tubular body at least essentially generally closes the passageway. A trigger positioned to releasably retain the closure at the outlet closes the passageway. A deflector at a discharge end of the sprinkler is coupled with the tubular body facing and spaced axially away from the outlet and intersects the central axis. The tubular body has a K factor greater than 9.

Abstract: The present invention provides a flow-control support for a distributor plate in a composite pressure vessel. The distributor plate includes a thermoplastic polymeric disk having a top side, a bottom side, a perimeter edge and a central opening and a plurality of fluid flow passages through the disk. The flow-control support is disposed between the bottom side of the disk and an inner side of an end of a thermoplastic liner assembly. The flow-control support includes a spirally fluted upper surface that is adapted to direct fluid flowing from a supply pipe disposed in the central opening of a distributor plate that is supported by the flow control support such that the fluid swirls in a space between the bottom side of the distributor plate and an inner side of an end portion of a water treatment vessel. The swirling water insures that fluid is distributed to substantially all of the fluid flow passages through the disk during backwashing operations.

Abstract: A reduced pressure treatment system includes a porous pad positioned at a tissue site and a canister having a collection chamber, an inlet, and an outlet. The inlet is fluidly connected to the porous pad. A reduced pressure source is fluidly connected to the outlet of the canister to such that fluid from the tissue site may be drawn into the collection chamber. A hydrophobic filter is positioned adjacent the outlet to prevent liquid from exiting the collection chamber through the outlet. A baffle is positioned within the canister to create a tortuous path between the inlet and the outlet to prevent premature blocking of the hydrophobic filter.

Abstract: A pendent type residential fire sprinkler is described. The residential fire sprinkler has a body with a K-factor of at least 6 passage coupled to a deflector assembly that distributes fluid flowing through the passage over a coverage area to perform in accordance with Underwriters Laboratory Standard 1626 (October 2003) for listing by Underwriters Laboratory Incorporated so that the body and a heat responsive trigger disposed between the passage and the deflector assembly of the sprinkler can be installed in accordance with the 2002 Edition of National Fire Protection Association Standards 13, 13D, and 13R. Various aspects of the residential fire sprinkler, including a method of protecting a residential dwelling unit are described.

Abstract: A nozzle for use with a pressure washer, and the nozzle includes a body portion that defines a longitudinal axis and a head portion coupled to the body portion and in fluid communication with the body portion. The head portion includes a face substantially perpendicular to a longitudinal axis of the body portion. An elongated first slot is disposed upon the face of the head portion, and an elongated second slot is disposed upon the face of the head portion and in a nonparallel orientation with respect to the first slot. A fluid outlet aperture extends through the face and is at least partially located within at least one of the first and second slots to allow a fluid flow from within the body portion to exit the nozzle from the head portion.

Abstract: An inflation nozzle for inflating an inflatable structure. The inflation nozzle includes a nozzle body, a probe, and a connection portion. The nozzle body defines a nozzle channel therethrough, and the channel has a channel outlet for expelling a fluid therefrom. The probe extends from the nozzle body adjacent and beyond the channel outlet, and is configured and dimensioned to facilitate positioning an inflation aperture of the flexible structure onto the nozzle body for directing fluid into the inflation aperture. The connection portion associates with the nozzle body for fluidly connecting the channel to a fluid source for delivering fluid through the channel to inflate the flexible structure.

Abstract: A hand-held apparatus for spraying texture material including a body, a pressurized air source mounted on the body, a texture material hopper mounted on the body, and a texture delivery nozzle for selectively spraying texture material from the hopper onto a surface to be coated by propelling the texture material using pressurized air from the pressurized air source wherein each of the air source and the hopper can be disconnected from the body without the use of tools. An air directing plunger has a plurality of discontinuities at an outlet thereof, which may be radially outwardly directed recesses or radially inwardly directed teeth for reducing the noise generated by the pressurized air during operation.

Abstract: A sprinkler assembly includes a body, a support, which extends from the body, and a closure device that releasably closes the discharge opening of the body. The sprinkler assembly further includes a trigger that releasably holds the closure device at the discharge opening. The support is adapted to allow the fluid flowing from the discharge opening, when the closure device is released, to pass through the support substantially unimpeded by the support and, further, is adapted to reshape the flow of fluid as it flows through the support.

Abstract: The present invention provides an impingement sprinkler with adjustable outflow angle. The invention includes a main body, at a lower side of which there is an inflow tube coupling end, and at upper side of which there is an upper frame. An outlet coupling portion is arranged at the lower flange close to the upper frame. A rotating member is arranged onto the upper frame of the main body; and an adjustable outflow head is assembled onto the outlet coupling portion of the main body, allowing the outflow angle to be freely adjusted. It is possible to adjust freely the sprinkling angle with the adjustable outflow head.

Abstract: A spray nozzle includes an orifice disposed on a substantially planar discharge surface. An impingement surface is disposed opposite the orifice, the impingement surface forming an angle with a centerline of the orifice. The angle between the orifice centerline and the surface is less than 90 degrees. A deflection ridge bridges a gap between the impingement surface and the discharge surface. The deflection ridge encompasses a partial circumference of the nozzle. The nozzle includes a fluid fitting adapted for providing a pressurized fluid to the orifice.

Abstract: A jet regulator (1) having a jet fractionating device (2) which distributes the incoming water flow into a plurality of individual jets is provided. The jet regulator (1) has at least one individual jet, from the individual jets formed by the fractionating device, which impacts on a node point (3) of a criss-crossing grid of bars (4, 5) of an outlet side downstream grid network (6). At least one node point (3) is configured as an inlet side recess of the grid network (6) and/or the jet regulator is an aerated jet regulator having a jet regulator housing (7) which includes at least one aeration opening (8) on a periphery of the housing thereof and at least one deflecting projection (9) which is used to maintain the water jet at a distance from the aeration opening that is arranged on the inner periphery of the housing in the direction of flow below the at least one aeration opening (8). The jet regulator (1) provides an improved fractionating of the incoming individual jets.

Abstract: A sprinkler assembly includes a sprinkler body having a base and a frame extending from the base. The base has a passage extending therethrough defining an inlet and an outlet. A deflector is mounted to the frame and spaced from the outlet, which is configured to deflect fluid flowing from the outlet in a radial pattern. A trigger assembly extends between the frame and the base and is adapted to support a plug in the outlet and release the plug when a temperature associated with a fire condition is detected. The plug is made from plastic and can include a reinforcing insert.

Abstract: A fuel injection valve which injects fuel from a nozzle hole includes a cavitation generation flow path in which a cavitation bubble is generated in fuel flowing inside the injection valve, and a bubble storage flow path which is connected to the cavitation generation flow path and the nozzle hole and which stores the cavitation bubble generated in the cavitation generation flow path. A fuel containing the cavitation bubble stored in the bubble storage flow path is injected from the nozzle hole so that atomization of an injected fuel spray is enhanced.

Abstract: The present invention provides a foam nozzle for assembly onto a trigger-type sprayer. The foam nozzle includes a base plate, containing front and rear faces, a plurality of pins, arranged at intervals, a straight tube, protruding vertically from the front face of the base plate, an orifice defined within the straight tube, and a mesh body, arranged on the nozzle orifice of the straight tube. The mesh body includes a circular rib and a plurality of radial ribs. A convex rib protruding from the interior of the circular rib is contained within the radial ribs. A central orifice is formed between the convex ribs, while a plurality of annular orifices is formed between the circular rib and the radial ribs. The foam nozzle can be assembled into a plurality of grooves for the nozzle of existing trigger-type sprayer to generate foaming spray.

Abstract: The present invention relates to a jet regulator (1) having a jet fractionating device inside a mounting housing (6). The jet regulator (1) according to the present invention is characterized in that the mounting housing (6) is divided into at least two housing parts (7, 8), and that the housing parts (7, 8) can be connected to one another, and that a housing part (7) at the flow inlet side is connected fixedly and non-releasably with the jet fractionating device (2). The jet regulator (1) according to the present invention is distinguished by a high degree of shape stability and by manufacturing costs that are nonetheless low, even for small housing diameters (see FIG. 1).

Abstract: A pendent type residential fire sprinkler is described. The residential fire sprinkler has a body with a K-factor of at least 6 passage coupled to a deflector assembly that distributes fluid flowing through the passage over a coverage area to perform in accordance with Underwriters Laboratory Standard 1626 (October 2003) for listing by Underwriters Laboratory Incorporated so that the body and a heat responsive trigger disposed between the passage and the deflector assembly of the sprinkler can be installed in accordance with the 2002 Edition of National Fire Protection Association Standards 13, 13D, and 13R. Various aspects of the residential fire sprinkler, including a method of protecting a residential dwelling unit are described.

Abstract: The invention is directed to, in one embodiment, a waterfall apparatus having an at least one water supply inflow supplying water to the waterfall apparatus and a body member having the water flowing therethrough. A water accumulation portion of the body member can be coupled to and filled by a water supply inflow. An at least one baffle having an at least one tube member interspaced thereon and extends from the accumulation portion of the body member to an outlet portion of the body member. An outlet flow path is in communication with the outlet portion of the body member, passing the water from the outlet portion of the body member along the outlet flow path and through a waterfall outlet, forming a sheet like waterfall outflow. The at least one interspaced tube member, angled entry portion and optional deflection member work to deflect, slow and smooth the flow, reduce debris accumulation and generally improve the sheet like quality and consistency of the flow of the sheet-like waterfall.

Abstract: A pendent fire protection sprinkler for storage applications, having a body including a fluid passage and an output orifice sealed with a seal cap, two arms extending from the body and meeting at a hub, a release mechanism with a thermally-responsive element positioned between the seal cap and the hub, and a deflector positioned on the hub and facing the output orifice. The deflector has aligned slots at about 90° from each other, corner slots located between the aligned slots, and angled slots located between the aligned slots and the corner slots.

Abstract: A sprinkler head assembly includes a sprinkler head body, a frame including a pair of arms extending from the body from opposed sides of the body, and a deflector mounted to the frame spaced from the outlet opening of the sprinkler head body for deflecting fire extinguishing liquid flowing from the outlet opening. The sprinkler head assembly is adapted to direct a greater proportion of the fire extinguishing liquid from one side of the sprinkler body than the other side of the sprinkler body.

Abstract: The invention relates to a solid cone spray nozzle with a mouthpiece having an outlet chamber and an inlet opening emanating from the outlet chamber and having a smaller cross-section than the latter According to the invention an inlet opening into the outlet chamber has a smaller cross-section than the outlet chamber and downstream of the outlet chamber inlet opening is provided a web-like preatomizer element on which impacts at least partly a fluid jet following entry into the outlet chamber. Use e.g. as a two-fluid spray nozzle for spraying or atomizing low viscosity liquids for cooling purposes in billet or bloom continuous casting installations.

Abstract: A fire protection sprinkler is provided, including a body having an output orifice and a flange and a seal cap to seal a flow of fluid from the output orifice. A thermally-responsive element is positioned to releasably retain the seal cap. Housing members extend through and from the flange of the sprinkler body, and contain rods, each of which extends through the flange. A deflector is connected to ends of the rods.

Abstract: A spray nozzle includes an orifice disposed on a substantially planar discharge surface. An impingement surface is disposed opposite the orifice, the impingement surface forming an angle with a centerline of the orifice. The angle between the orifice centerline and the surface is less than 90 degrees. A deflection ridge bridges a gap between the impingement surface and the discharge surface. The deflection ridge encompasses a partial circumference of the nozzle. The nozzle includes a fluid fitting adapted for providing a pressurized fluid to the orifice.

Abstract: A spray deflecting joint of fluid conveying structures has a spray obstructing structure lying in the path of any fluid that might spray from the joint in any direction within a range of directions, wherein the spray obstructing structure is permanently attached to one of the fluid conveying structures, is shaped to reduce the momentum of liquid sprays and/or has a surface treatment to reduce the momentum of liquid sprays.

Abstract: A method of manufacturing a variety of injection molding hot runner system components using two materials. Blanks for portions of the components are formed of each material and fused, preferably by electron beam welding, then the component having the two portions is machined to its final configuration. Components made with this process include nozzle tip components such as tips, tip retainers, and tip inserts, as well as manifold bushings, valve stems and nozzle housings.

Abstract: A spray nozzle includes a body and a deflector. The body is aligned and connected to the deflector with a fastener. At least one pin can be used to further align the deflector relative to the body. A single mating surface is provided on each of the body and the deflector.

Abstract: An enhanced protection extended coverage pendent fire protection sprinkler has a body including a fluid passage and an output orifice sealed with a seal cap, two arms extending from the body and meeting at a hub, a release mechanism with a thermally-responsive element positioned between the seal cap and the hub, and a deflector positioned on the hub and facing the output orifice. The deflector includes a pair of aligned slots, aligned with a plane of the arms, and a pair of perpendicular slots, perpendicular to the aligned slots and having a width that is less than that of the aligned slots. The deflector further includes a pair of corner slots, positioned between the aligned slots and the perpendicular slots. Angled slots are positioned between the aligned slots and the corner slots and between the perpendicular slots and the corner slots.

Abstract: A cylindrical adapter to a fire nozzle is disclosed which produces not only a forward stream but also at the same time a second rearward directed safety spray cone shaped bubble which encloses the fireman and any persons or property being rescued. This adjustable cone shaped bubble protects the fireman by reducing the radiant heat felt by the fireman as well as dangerous gases. Also is taught a small pipe centered in the cylinder with the purpose to allow a shaft to be inserted therein. This shaft can be used to control the forward stream in future models of the invention.

Abstract: An upright fire protection sprinkler having an input orifice at an input end of the sprinkler for receiving fluid and an output orifice at an output end of the sprinkler for outputting fluid. The sprinkler has a connection portion at the input end of the sprinkler and a body extending between the connection portion and the output end. A pair of frame arms extends from the output end and meets at a hub positioned in axial alignment with the output orifice. A deflector is positioned on the hub and is configured to direct fluid output from the output orifice substantially in a direction back toward the output end.

Abstract: A fuel injector has a plunger for opening/closing a fuel path to control the amount of fuel to be injected; a seat portion for the plunger; and a plurality of nozzle holes for injecting fuel passed through between the plunger and the seat portion, A nozzle plate is provided with the seat portion, and a taper-fuel inlet hole has a diameter that gradually reduces from the seat toward its outlet, An orifice plate is arranged downstream from the taper-fuel inlet hole, and is provided with a concave portion opposite to the nozzle plate, with a plurality of nozzle holes being formed concentrically at a bottom of the concave portion. Each nozzle hole has an inclined angle in the direction of the plate thickness within the concave area.

Abstract: A fire protection sprinkler system for metal buildings has horizontally oriented sprinkler heads mounted on water supply lines extending along each side of rafters supporting the roof of a metal building so as to provide protection for bays between adjacent rafters having a width up to 25 feet or more. The sprinkler heads have a vertical part facing an outlet in a sprinkler body and a hood-shaped part supported from the vertical part and having downwardly inclined side walls and a downwardly inclined front wall. The deflector arrangement is supported from the sprinkler body by a pair of frame arms which converge at a boss on which the vertical part is mounted and another deflector part having rearwardly inclined arms extending horizontally, downwardly at an angle and substantially vertically, is supported between the boss and the vertical part of the deflector.

Abstract: A sprinkler for fire suppression systems that produces an orthogonal spray pattern is disclosed. The sprinkler has an exit orifice with a non-round perimeter and a deflector plate having a non-round perimeter. The shape of the deflector plate perimeter may be matched to that of the exit orifice perimeter. Orifice perimeters may be square, rectangular, formed of lobes or interconnected curves, and there may be multiple orifices in the sprinkler.