Abstract: A fire extinguishing agent delivery apparatus, system, and method of use having an outer tube with an inlet attached to a pressurized water source and an outlet attached to a firefighting hose. The apparatus includes an inner venturi tube mounted within the outer tube, having a funnel-shaped inlet and outlet, a reduced diameter intermediate portion, and an extinguishing agent inlet port. The apparatus includes a device for injecting extinguishing agent into the inlet port and the venturi tube has a smaller diameter than the outer tube, so a portion of water travels through the venturi tube and mixes with extinguishing agent and a greater portion of water travels unobstructed through the outer tube and mixes with the mixture of water and fire extinguishing agent discharged from the venturi tube, prior to discharge from the outer tube.

Abstract: A pulsating irrigation device is provided that transforms a fluid flow entering the device to an intermittent pulsating fluid flow that is ejected from the device. The device has a chamber and at least one compressible member in pressure contact with the chamber. The compressible member compresses to assist the formation of the pulses ejected from the device and the fluid within the chamber is substantially sealed from contact with the interior of the compressible member.

Abstract: A bolted telescopic rod-type defense spray apparatus includes a first tube body, a cap, a compression elastic piece, a second tube body, an anti-extraction element, a spring pin component, and a push joint component. In the bolted telescopic rod-type defense spray apparatus, two sectioned tube pieces and a spring pin component and a push joint component that are between the two tube pieces are applied to lock and unlock a relative position relationship between the two tube pieces, so that the defense spray apparatus has composite functions of a rod-piece additional function of a locking configuration of relative positions of the two tube pieces and a press-lever spray irritant gas can of an unlocking configuration of the relative positions of the two tube pieces.

Abstract: A nozzle is disclosed for use within a filter for inputting a jetting stream into the filter media to clean the filter media. The nozzle comprises an inlet for communication with a jetting stream source, and a plurality of plates stacked parallel and abutting one another. The plurality of plates comprises at least a top plate and a bottom plate, one of the plates having an aperture through the center thereof for receiving the jetting stream, wherein between adjacent plates at least one space is provided extending from the outside edge of the plates to the interior of plates and in fluid communication with the aperture for channelling the jetting stream radially outward from and substantially parallel with the longitudinal plane of the plate.

Abstract: An apparatus for discharging a fire-extinguishing agent includes a detection mechanism and a triggering mechanism. The detection mechanism includes a temperature responsive element configured to detect the presence of a fire. The triggering mechanism is operatively connected to the detection mechanism and adapted to trigger the discharge of the fire-extinguishing agent from an agent container upon the detection of the presence of a fire by the detection mechanism.

Abstract: An electrostatic atomizer (100) includes a guard electrode (4) between an opening (11) and an opening (12). The guard electrode (4) is different from a spray electrode (1) and a reference electrode (2). A voltage between the spray electrode (1) or the reference electrode (2) and the guard electrode (4) is controlled to have a magnitude within a prescribed range smaller than a magnitude of a voltage between the spray electrode (1) and the reference electrode (2).

Abstract: Apparati for generating a mist are disclosed. One apparatus is disclosed, which has an elongate hollow body (12) and an elongate member (14) located within the body (12). A transport fluid passage (16) and a nozzle (32) are defined between the body (12) and the elongate member (14). The transport fluid passage (16) has a throat portion of reduced cross-sectional area and is in fluid communication with the nozzle (32). The elongate member (14) includes a working fluid passage (26) and one or more communicating openings, such as for example, bores, annuli, and combinations thereof, (30) extending radially outward from the working fluid passage (26). The openings (30) permit a working fluid (e.g. water) to be passed into the transport fluid passage (16), whereupon the working fluid is subjected to shear forces by a high velocity transport fluid (e.g. steam). The shearing of the working fluid results in the generation of a mist formed from droplets of substantially uniform size.

Abstract: A sanitary fitted element (1) which can be inserted into the water outlet of a sanitary outlet fitting and is held releasably there. A characteristic feature of the fitted element (1) according to the invention is that said fitted element has an adjusting device for changing the clear sectional area of flow of the fitted element (1) and/or the discharge rate, which adjusting device is actuable via at least one control element (8) which is arranged actuably on the inflow side of the fitted element (1) and/or on the outflow side thereof. The fitted element (1) according to the invention can be used in a versatile manner in order to reduce the outlay on production and stock.

Abstract: The present disclosure provides a fuel injector including a magnetostrictive actuator that is capable of precise control of a needle or nozzle valve element. The magnetostrictive actuator is direct-acting on the nozzle valve element, which extends into the magnetostrictive actuator, providing a compact fuel injector configuration that may provide rate-shaping of a fuel injection event.

Abstract: Low form factor mobile electrostatic spray units and methods of using same are disclosed.

Abstract: A device for supplying fire suppressing agent to the interior of a container for an extended duration may include a plurality of chambers configured to contain and selectively expel the fire suppressing agent, a puncture mechanism configured to puncture a container, and a manifold in flow communication with the plurality of chambers and the puncture mechanism. The device may further include a controller configured to initiate expulsion of the fire suppressing agent from the chambers in a controlled manner, where the device is configured such that the fire suppressing agent may be first expelled from a first one of the plurality of chambers at a first time, and the fire suppressing agent may be expelled from a second one of the plurality of chambers at a second time that is later than the first time.

Abstract: Noise and room air overpressure on discharge of a gas extinguisher system is reduced. During the discharge, an extinguishing fluid is conveyed from a pressurized container via a container valve and line system to an extinguishing nozzle. At the beginning of the discharge the extinguishing fluid is predominantly present in the line system in liquid phase and after discharge it assumes a predominantly gaseous phase. In a phase transition period, which is accompanied by a significant reduction in the extinguishing fluid mass flow and a significant increase in the noise and the room air pressure, the mass flow is then reduced or stopped. Due to the reduction of the mass flow, the sound level of the noise arising is advantageously reduced to a value of a maximum of 100 dB and the room air pressure to an overpressure value ranging from 200 to 1000 Pa.

Abstract: A spray assembly including a spray pipe with a bottom provided with a plurality of first through holes, each having a nozzle, wherein the nozzle includes a slider with an area larger than the first through hole, to cover the first through hole. The nozzle is connected to the slider and protrudes from the first through hole; the nozzle also includes a locking member to connect the slider to the spray pipe. The slider can move to adjust the position of the nozzle in the first through hole. There also provides a wet etching device including a spray unit, wherein the spray unit includes a plurality of spray assemblies as mentioned above, and a plurality of spray pipes in the plurality of spray assemblies are arranged in parallel with each other or approximately in parallel with each other.

Abstract: A fire protection sprinkler is provided with a skipping shield having air flow passages therethrough to reduce the negative impact that the shield has on the thermal response of the sprinkler. By providing holes, slots, louvers, or mesh to the skipping shield, water from adjacent flowing sprinklers can still be blocked from impinging on the thermal element. The shield will block water but allow hot gas from the fire to flow through the shield thereby improving the response time of the thermal element.

Abstract: A shower head (40) has a passageway for a flow of pressurized air from a pressurized air supply, via a Venturi (48) having a convergent portion (46), throat (50) and divergent portion (52), to a shower discharge opening (56), and a passageway (58) for a flow of water from a water supply to a water discharge opening (60) in the Venturi. The Venturi is such that, in use, the general direction of the flow of air is turned through a substantial angle in the Venturi. This folding of the Venturi enables a compact configuration of shower head to be provided.

Abstract: A pull-out wand is disclosed for use with a water delivery device. The pull-out wand may include one or more sensors, such as a touch sensor and/or a proximity sensor.

Abstract: A fire protection device for small electrical devices provided with a housing. The fire protection device includes a bursting capsule featuring a hollow space that is completely enclosed and delimited by a vessel wall, wherein a liquid is disposed in the hollow space. The liquid breaks the vessel wall at a predetermined trigger temperature due to thermal expansion thereby causing the bursting capsule to rupture. When the vessel wall ruptures and releases the liquid it has a fire preventing effect and/or a fire extinguishing effect.

Abstract: A method of suppressing a fire includes the steps of dispensing a first inert gas in a suppression area at an initial rate, detecting an undesired temperature in the suppression area, dispensing a second inert gas at a subsequent rate in the suppression area in response to the undesired temperature and displacing a volume from the suppression area with the inert gas to achieve a temperature below the undesired temperature.

Abstract: Methods and apparatus are provided for activating a volatile dispensing device. The apparatus includes a puncturing mechanism formed between a first portion and a second portion of an activation arm and the puncturing mechanism being shaped to move laterally to puncture a volatile container as a compressive load is applied to the activation arm through the first and second portions.

Abstract: Apparatus and method for firefighting includes a containerless core of a fire retardant material, compressed to form a prolate spheroid shape. A shaft with fins and a carrying hook can extend from the core tail. The core can have a core charge of an explosive material within the core channel. An altimeter sensor coupled to the core charge and a triggering mechanism is coupled between the altimeter sensor and the core charge, and causes the triggering mechanism to detonate the core charge when the apparatus reaches an altitude. A delivery apparatus is included with a frame having carry harness, and at least one holding hook on the frame coupled to the carrying hook. The carry harness supports delivery apparatus in transport. Powders of calcium carbonate, magnesium carbonate, ammonium sulfate, diammonium sulfate, diammonium phosphate, ammonium polyphosphate, or monoammonium phosphate can be intermixed as fire retardant, along with indigenous plant seed.