Abstract: A fuel injector for an internal combustion engine has an inlet member provided with an enlarged transverse opening which receives a tubular nozzle body having a peripheral shoulder to locate the inlet member longitudinally on the nozzle body. A shallow annular groove is formed around the periphery of the nozzle body in alignment with the fuel feed passage of the inlet member to provide a restricted annulus for delivering fuel to the interior of the nozzle body. The tubular nozzle body includes a plurality of inlet ports which communicate with the restricted annulus and are angularly spaced from the fuel feed passage so that the restricted annulus serves as a filter to remove solid particles entrained in the fuel. The inlet member is shrunk or press fit on the nozzle body without welding and a cap member provides a spring chamber to mount a spring which biases the valve against its seat and the inlet member against the shoulder.

Abstract: An emitter for use in drip irrigation comprising an emitter body defining an emitter chamber and a resilient element having first and second opposite faces mounted in the emitter chamber with the first face confronting a surface of the emitter chamber. The surface of the emitter chamber and the first face cooperate to define a restricted fluid passage. The emitter body has an inlet for supplying fluid under pressure to the emitter chamber and an outlet leading from the fluid passage. The resilient element has an aperture providing communication between the second face of the resilient element and the fluid passage so that fluid can pass from the inlet through the aperture and the fluid passage to the outlet. The pressure drop across the aperture is increased to hold the first face of the resilient element against the surface of the emitter chamber to maintain the integrity of the fluid passage.

Abstract: A fluid pump dispenser includes a dispenser trigger which may be located in pivotable engagement with the dispenser housing and pump piston after shipment. The initial actuation of the trigger moves the pump piston and a container conduit, engaged thereto, to open a container vent shipping seal provided by mating surfaces on the conduit and the container cap. Fluid carried from the container by the conduit enters the pump chamber through a central orifice in the piston. A flexible member located on the piston functions as an inlet check valve for the conduit and as a piston ring. The fluid dispenser also includes a nozzle structure having a flexible member which functions as an outlet check valve and O-ring seal, and which cooperates with a threaded nozzle cap to vary the discharge pattern of the dispenser responsive to twisting adjustment of the cap.

Abstract: Gutter cleaning apparatus is disclosed comprising a housing having a first and second opening therein for delivering fluid under pressure into a rain gutter mounted on a building. The openings are diametrically opposed and the flow of fluid through the openings is controlled by a valve that alternately opens one opening and closes the other. The valve is controlled by increasing and decreasing the fluid pressure in the housing. When fluid pressure is at a pre-determined lower level, the valve is in a neutral position between the two openings. A stream deflector plate extends from the bottom of the valve and depending on which direction the deflector plate is positioned, increasing the pressure in the housing will cause the valve to move into one of the openings. Once the valve is positioned in one of the openings the direction of the stream deflector plate is changed since it is mounted on the valve in a manner so as to engage the housing when the valve is closing one of the openings.

Abstract: A temperature insensitive, low cost, pressure regulating and remotely flushable emitter for drip irrigation systems comprises a nodal body insertable into the wall of a pipe and having an end face aperture in which a deflectable resilient element responds to interior water pressure changes. The resilient element is deflectable normally to the plane of the end face, and provides at least one edge surface in facing, shearing relation to the end face aperture wall. In a first mode, one or more slit apertures decrease in area in response to increases in interior water pressure within a nominal operating range. When the pressure is raised further, however, the resilient element is deflected across the end face aperture wall, to define at least one slit aperture providing a low volume but high velocity flow which creates a flushing or cleaning action.

Abstract: An article which may be placed at a point between the water pipe inflow line and a shower head to reduce the inflow of water to the shower head. More particularily a disc shaped article having a hole in its center and being concaved inward from its outer circumference to the center hole. The size and shape of said article being such that it is adaptable to a multiplicity of different size and shape shower heads.

Abstract: A dual-function valve assembly for an irrigation system typically having a plurality of sprinkler heads disposed at different elevations downstream from a control valve. A spring-loaded check valve prevents drainage of the sprinkler lines through the lower heads when the control valve is closed. A second valve in the assembly closes to prevent excessive flow if a sprinkler head is damaged or removed. The valve assembly is especially useful in unattended, automatically actuated irrigation systems.

Abstract: A spray nozzle apparatus and a method of making a spray nozzle in which a variety of nozzle sizes can be made using several common components. The nozzle head has a threaded base for attachment to a water line which base has an opening passing therethrough for mounting removable nozzle inserts therein with retainer rings. A water-deflecting portion is removably mounted to the base so that a curved portion thereon will deflect water at a predetermined angle. The curved deflector is attached to the base with a single screw and a pair of positioning studs.

Abstract: A valve for hot melt adhesives is provided with a spring pressed piston urged open by adhesive pressure. A nozzle on the valve has an outlet channel of predetermined volume. Upon termination of fluid pressure the piston retracts through a volume less than the predetermined nozzle outlet channel volume to suck back a limited amount of adhesive to prevent dripping of adhesives.

Abstract: A regulated flow-reducing device particularly useful for drip irrigation comprises a flow-retarding member disposed in a housing, the member being formed with a circuitous fluid flow pathway defined at least in part by recesses formed in both its opposed faces, and a flat regulator member disposed between the flow-retarding member and the housing inlet such that the inlet face of the regulator member is subject to the fluid pressure at the inlet of the housing. The flat regulator member is in contact with and covers the inlet face of the flow-retarding member except for its inlet end to provide communication between the latter and the housing inlet. The flow-retarding member is made of resilient material so that both its recessed faces are deformable by the inlet pressure whereby the cross-sectional area of the recesses on both faces of the flow-retarding member are varied in accordance with the inlet pressure.

Abstract: A control valve assembly for regulating the mixing of abrasive from a pressurized tank with high pressure fluid during abrasive blasting operations having a tubular abrasive flow pipe and an abrasive control nozzle within a control valve housing, with provisions for moving the abrasive control nozzle and the tubular abrasive flow pipe relative to each other to and from an abrasive fluid mixing position from and to a sealed, closed position, respectively.

Abstract: In a fluid-flow pulsator, a housing has a chamber with an inlet and an outlet. Within the housing is a piston assembly having first and second pistons with the first having a working area less than that of the second. A valve associated with the assembly closes the outlet on movement of the assembly. The assembly is resiliently urged in a direction effecting closure of the outlet with the first and second pistons effectively being disposed in the chamber on opposite sides of the inlet. The introduced fluid pressure, the urging strength and the piston areas are correlated so as to produce pulses of fluid from the outlet in response to a supply of fluid to the inlet.

Abstract: A manually operated blow gun for cleaning work pieces by use of compressed air which includes a back pressure sensitive control that is effective when the gun is dead ended with the trigger depressed. The gun has a trigger operated valve which causes actuation of a main output valve, wherein when back pressure is increased, the pressure is directed via a by-pass conduit to close the main output valve against the action of the trigger operated valve.

Abstract: An improved drip irrigation emitter for use in drip irrigation systems, the drip irrigation emitter including a hollow body with at least one outlet port and an inlet connector for receiving fluid from main supply lines, a collar with a center bore movably retained within the hollow body, a tapered pin fixedly attached to the emitter and projecting into the collar bore to form an orifice defined as the volume space between the boundary of the bore and the pin periphery for permitting fluid flow between the inlet and outlet ports and a spring assembly for transmitting a continuously variable yieldable force on the collar in a direction to close the orifice.

Abstract: A pressure-regulated water sprinkler comprises a sprinkler head carrying a nozzle at one end through which the water discharges in the form of a jet. The sprinkler head includes a housing defining an internal chamber communicating at one end with the nozzle and having an inlet at another end. The nozzle end of the housing is formed with a plurality of internal ribs spaced circumferentially and extending longitudinally to a point within the chamber intermediate the nozzle and inlet ends. The ribs are formed with a first annular shoulder adjacent to the nozzle end of the chamber, and with a second annular shoulder more remote from the nozzle end and of larger diameter than the first annular shoulder. An annular ring within the chamber has one side bearing against the second annular shoulder and its opposite side facing the housing inlet.

Abstract: This invention relates to an improvement in a device which reduces the flow of water through a shower head. The invention consists of a unitary cylindrical member being inserted into the delivery end of a water supply line adjacent a shower head connected thereto, the cylindrical member having a restrictive passage therethrough in the direction of the flow of water and the member being retained in position during operation of a shower by water pressure.

Abstract: A trickle-flow irrigation valve of the type which is installable through the wall of a garden hose, and having a pressure chamber with an inlet passage from the hose and an outlet passage through a wall of the chamber in which are also formed a shallow channel and an outlet groove in the channel, communicating with the outlet passage. A flat, resilient valve element covers the outlet passage and a substantial portion of the groove and channel. The resilient valve element allows relatively high-volume, flushing flow when water is first received in the chamber, but deforms to the shape of the channel as supply pressure builds up, thus restricting flow to the outlet groove and providing a substantial pressure drop. A high supply pressure will force the valve element into the groove itself, to some degree, and a pressure regulating effect is thereby obtained.

Abstract: For use in a sprinkler system a pressure and flow regulation device comprising a snap acting valve which includes a movable valve closure having a spring biasing the valve closure toward a closed position and a diaphragm having a surface disposed to be acted upon by inlet water pressure to urge the valve closure to an open position against the bias of the spring, only when a predetermined inlet pressure is reached, and a pressure regulator constructed integrally with the snap acting valve for automatically regulating the pressure of water supplied to a sprinkler to a selected level.

Abstract: A spray nozzle for mounting on an aircraft which controls droplet size comprises a bonnet section having a flexible diaphragm for permitting passage of spray material through a channel and outwardly through one of a plurality of selectively positionable orifices of varying cross-section for further passage through a flexible connection to a rotating cage assembly actuated by air flow impinging upon mounted fan blades for dispensing the spray material in relatively constant sized droplets for spreading over a large swath of crop terrain.