Abstract: A spraying gun includes a gun body, a control valve, and a nozzle head. The control valve includes a valve body, an adjusting switch, a rotation knob, and a container. Thus, the water from the gun body is injected through the inlet flush hole of the valve body and the inlet flush bore of the adjusting switch into the receiving space of the container to stir and mix with the detergent, and the water and detergent mixture is injected through the outlet injection bore of the adjusting switch and the outlet injection hole of the valve body into the nozzle head, so that the water is mixed with the detergent in the container exactly and completely, thereby enhancing the washing effect of the spraying gun.

Abstract: A fuel injector with various embodiments of a annular damper member that reduces noise generated between a valve group subassembly and a power group subassembly during operation of the fuel injector. A mass annular damper member is also shown and described. A method of reducing sound in the valve group subassembly is also disclosed.

Abstract: A fuel injector having a piezoelectric actuator in an injector body and held in contact with the injector body on one side and with a sleevelike booster piston on the other via first spring means. A nozzle body joined to the injector body and a stepped nozzle needle is guided in the body. A second spring disposed inside the booster piston which together with the injection pressure acting on the back side of the nozzle needle keeps the nozzle needle in the closing position. A control chamber on the end toward the nozzle needle of the booster piston communicates, via at least one leakage gap with a fuel supply at injection pressure, and the nozzle needle is urged in the opening direction by the fuel located in the control chamber.

Abstract: The invention satisfies this need. The invention is an internally threaded insert for use with a polymetric pipe fitting in a fire sprinkler system. The insert comprises an outer side surface, an outer rearward surface and an outer forward surface. The outer forward surface is adapted to retain a fire sprinkler at a forward end of the insert. The outer side surface of the insert is sized and dimensioned so as to closely match the bores of standard polymeric pipe fittings, so as to be capable of being slidably and snugly received into the bores of a standard polymeric pipe fitting. The insert can be conveniently affixed within the bores by non-mechanical means, such as by gluing.

Abstract: The present invention relates to an automatic water inlet switching device for an oscillating sprinkler that has a sprinkle control unit having a blade equipped gear transmission set housed therein, working together with a water inlet switching device having an operation unit and a movable swinging seat. The bottom of the movable swinging seat is provided with two water stop ends in opposite to two outlet holes defined on a coupling unit with a concaved bounded space placed at the center thereof. An action stick of the operation unit is operable inside the bounded space so that in the water inlet switching operation the swinging angle of the action stick is limited within the bounded space and the action stick will move against the push end thereof so as to produce a built-up force to instantaneously spring away the movable swinging seat no matter what the water pressure is high or low in operation.

Abstract: A spray gun with pressure display for applying paint onto a painted object by atomizing the paint with compressed air. A pressure indicating device includes a digitally displayed pressure sensor (25), a pressure transducer part (24), and a display part (27) unitized with each other. The pressure indicating device is detachably installed on a spray gun body, and adapters (21, 22) without a pressure indication function are detachably fitted to the spray gun body according to the shape of the body grip part so that the presence or absence of the pressure indication function can be selected before use. The spray gun can be used under controlled conditions by allowing a worker to detect an air pressure at hand during spraying operation since the spraying air pressure largely affects paint finish as well as dispersion of atomized paint.

Abstract: A spray oscillating control apparatus for sprinklers is equipped with a sprinkling control assembly to swing a spray body into different angles wherein a gear train assembly with an impeller is mounted into the sprinkling control assembly and work in linking mechanism with a spray oscillating control apparatus composed of a water duct having two inlet orifices and a spray control device having a linkage gear wheel and two covering blocks. The linkage gear wheel is directly meshed with one matched gear of the gear train assembly and the two covering blocks are matched to the two inlet orifices, permitting the linkage gear wheel and the two covering blocks to rotate along with the gear train assembly and, thus, switch the amount of intake water supply in a gradual manner so that spray sprinkled can oscillate rhythmically from far-to-near and near-to-far in distance, achieving even distribution of the spray onto a lawn.

Abstract: A trigger type fluid dispenser (100) according to the invention includes a body (110) having a discharge flow path (111) and a cylinder (112) disposed in parallel with the discharge flow path (111), and a piston (140) in the cylinder (113) is caused to slide by a trigger (130). The trigger (130) is configured so that a hook portion (131) thereof is held to be swingable by the body (110), a turned-down portion (131) of an extension portion, which is an elastic portion (132) integrally extending from a swinging portion (114) of the hook portion (131), is held with respect to the body (110), and a tip end (132e) of the extension portion is positioned to be capable of coming into contact with the hook portion (131). The body (110) is configured so that a cover (120a) is installed to form an internal space (R) between the cover (120) and the discharge flow path (111), and a core element (150) is inserted in the discharge flow path (111) and the internal space (R).

Abstract: An improved liquid sprayer assembly for connection to a container (which preferably includes two liquid storage compartments) has a housing that includes a container mount having an underside with at least one structure that is operably interposed with corresponding structure on a neck portion of the container such that the container mount is fixed in a predetermined orientation relative to the container. A cap locks the container mount to the neck portion of the container. Preferably, the at least one structure of the container mount comprises a pair of wedge-shaped wall structures together with a plurality of wall structures that extend in a directional substantially parallel to the central axis of the mount/neck. The wedge-shaped wall structures are radially disposed opposite one another about the central axis of the container mount/neck and fit within wedge-shaped voids defined by the neck portion of the container.

Abstract: A vehicular firefighting system includes a vehicle, a boom pivotally coupled to the vehicle about a horizontal axis and a nozzle pivotally coupled to the boom. In one embodiment, the system includes a linkage having a first end coupled to the nozzle and a second end coupled to the vehicle such that the linkage maintains an orientation of the nozzle as the boom pivots about the horizontal axis. In another embodiment, the boom forms at least one fluid conduit in fluid communication with the nozzle so as to deliver firefighting agent to the nozzle.

Abstract: A fuel injector and various methods relating to the assembly of the fuel injector. The fuel injector includes a power group subassembly and a valve group subassembly having a respectively connected first and second connector portions. The power group subassembly includes an electromagnetic coil, a housing, at least one terminal, and at least one overmold formed over the coil and housing. The valve group subassembly insertable within the overmold includes a tube assembly having an inlet tube and a filter assembly and sealing ring proximate the inlet tube. A pole piece couples the inlet tube to one end of a non-magnetic shell having a valve body coupled to the opposite end. An axially displaceable armature assembly confronts the pole piece and is adjustably biased by a member and an adjusting tube toward engagement with a seat assembly. The seat assembly includes a flow portion and a securement portion having respective first and second axial lengths at least equal to one another.