Abstract: A duckbill valve includes a flexible and hollow body having a first shape upon being formed by injection molding. The body in the first shape has a first opening at a first end and a second opening at a second end. The body is configured to be inverted into a second shape. The second shape has a first opening at a first end and has a slit at a second end. The slit is defined by lips that are pressed together to form a seal.

Abstract: A flexible and restorable container main body for housing a medicinal solution. A stopper member is fixed in an inside of a medicinal solution passage that communicates with the container main body for discharging the medicinal solution when the container main body is pressed and deformed. A pressure valve is arranged in the medicinal solution passage at a downstream side in the medicinal solution discharge direction further than the stopper member and is formed with an opening having a circular cross section which contacts a tip portion of the stopper member. A biasing member is provided at a downstream side for biasing the pressure valve in a direction opposite to the medicinal solution discharge direction by abutting against a peripheral portion of the opening of the pressure valve.

Abstract: A drip irrigation emitter has first and second inlets through which liquid enters the emitter from an irrigation pipe, an outlet through which liquid exits the emitter, and a first flexible diaphragm portion seated on the second inlet and serving as a valve. Liquid at a pressure in the pipe that is below a predetermined level enters the emitter via the first inlet and travels along a first flow restricting path before exiting via the outlet and liquid at a pressure in the pipe that is above the predetermined level biases the first flexible diaphragm portion so that liquid can enter the emitter via the second inlet and travels along a second flow restricting path before exiting via the outlet.

Abstract: A microdosing apparatus and method include a fluid conduit having a flexible tube with a first end for connecting to a fluid reservoir and a second end where an outlet opening is located. An actuating device with a displacer with an adjustable stroke is provided, by which the volume of a portion of the flexible tube can be changed to thereby dispense liquid as free flying droplets or as a free flying jet at the outlet opening by moving the displacer between a first end position and a second end position, whereby the tube is partly compressed in the first or the second end position.

Abstract: This invention relates to pump-action nozzle devices and methods of making the same. The dispenser nozzles of the invention comprises a body which defines an internal chamber having an inlet through which fluid may be drawn into said chamber and an outlet through which fluid present in the chamber may be expelled from the nozzle. The inlet comprises an inlet valve and the outlet comprises an outlet valve. Fluid is dispensed from the dispenser nozzles by pulling the trigger handle of a trigger actuator to resiliently deform or displace a portion of the body of the device that defines the chamber, thereby compressing the chamber and actuating the dispensing of fluid. In preferred embodiments, the outlet comprises an outlet passageway that extends from the chamber to an outlet orifice. One or more spray-modifying features are preferably formed within the outlet passageway.

Abstract: The invention is directed to a sprinkler toy and a method for producing a geyser-like burst of liquid supplied by a source of pressurized liquid. The sprinkler toy may include a reservoir in fluid communication with the pressurized liquid source, wherein the volume of the reservoir may increase as the liquid is supplied to the reservoir by the pressurized liquid source. The sprinkler toy may further include a valve in fluid communication with the reservoir and operatively coupled to the reservoir, wherein the valve may be moveable between a closed position and an open position, wherein the increase of the volume of the reservoir from a first volume to a second volume may cause the valve to move from the closed position to the open position, and wherein the pressure within the reservoir when the valve moves to the open position may cause a geyser-like burst of liquid stored in the reservoir to discharge through the valve.

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: One disadvantage during delivery of products such as foams, for instance shaving foam or gel, self-foaming products and other products that are applied with a pressurized system from a conventional, pressurized dispenser container with the aid of known dispenser heads that can be inserted into the delivery valve of the dispenser container is that the pressurized product remaining in the delivery channel continues to be pressed out in small amounts in an uncontrolled manner after utilization despite the fact that the delivery valve is closed. In order to eliminate said disadvantage, the dispenser head (1) is configured with an additional closing device (1?) that automatically opens the delivery hole (3) and automatically closes it after the dispensing process is completed.

Abstract: A nozzle element is described, which can is inserted into a nozzle body, either fixed in position or adjustably, and together with the nozzle body forms a component of a windshield wiper system of a motor vehicle. The nozzle element consists of a hard metallic, ball-like base body and a cylindrical projection formed in one piece with the body. A hose-like resilient sleeve is pulled tightly onto the body, and closes off the outer ends of transverse channels which are in flow connection with a centered flow channel. Via the channel, washing fluid for the windshield is supplied under pressure. Thereby, the resilient sleeve bulges outwards so that the fluid can flow out of the nozzle element on the inside of the sleeve and on the outside of the cylindrical projection via an annular channel formed under pressure.

Abstract: A trigger assembly comprising a handle through which there passes an axial duct and a spray mouth through which there passes an outlet passage. The posterior frontal face of the spray mouth and the anterior frontal face of the handle are surfaces with complimentary curvatures so that the spray mouth and the handle can pivot with respect to each other, against the action of elastic means, towards an open position in which the passage of the spray mouth and the duct of the handle are aligned with one another and, under the action of elastic means, towards the closed position in which the duct and the passage are not aligned with each other.

Abstract: A thermostatic air control for assist air to a fuel injector utilizes a bi-metallic ring to seal the air inlets when the engine temperature has increased. This in effect prevents the flow of assist air when the engine is warm and the need for assist air is not required. The bi-metallic ring can have either a positive or negative temperature coefficient and is positioned either on the inside or the outside, respectively of the air assist shroud of either a top or bottom feed fuel injector. A small orifice having a predetermined size and discharge coefficient provides a constant air flow to the output of the injector.

Abstract: A pneumatically operated spray gun for dispensing fluid materials, and having a disposable supply hose for eliminating dean up problems common when using more expensive hoses and fittings. As a result, the spray gun is easy to dean and maintain since no spray material is introduced through internal parts of the spray gun. such as valves, passages, and inlet and outlet ports. The spray gun includes a gun housing having an air inlet port, an air outlet port, and a spring biased air valve disposed between the inlet and the outlet ports. The air valve is biased in a closed position. A trigger is pivotally attached to the gun housing and engages the air valve. The trigger is also attached to one end of a spring biased pinch valve mounted in the housing. Another end of the pinch valve is biased against one end of a material disposable supply hose for pinching off the supply of material therethrough. An end of the disposable supply hose is attached to the housing and disposed adjacent an end of the air outlet port.

Abstract: There is provided an improved composition for rapid setting, sprayable cementitious material, as well as improved processes and systems for mixing and placing such materials. The composition comprises a sprayable mixture of cement forming ingredients, such as silicon dioxide, magnesium oxide, and an aqueous metal phosphate solution. The process for mixing and placing such a composition uses serially connected dry material feed receptacles which are independently pressurizable and are isolatable from ambient conditions after loading to provide substantially increased throughput volume. The receptacles communicate the composition to a fluidizing element in which the material is fluidized before being formed into a slurry and atomized. Alternatively, dry and slurried material can be conveyed in a cavity pump under high pressure to achieve substantially increased throughput volume.

Abstract: A shower apparatus for controlling water that is being expelled from a showerhead under pressure. A water conduit couples from a pressurized water pipe adjacent to the showerhead and connects to a mat which the user steps upon. The water conduit includes a mat conduit which the user steps upon. The water conduit includes a mat conduit having an actuating or switching means operable by foot pressure from the user to selectively restrict water flow at the showerhead.

Abstract: A device designed for being adapted to surround a duct formed with one or several orifices operable for feeding a fluid to an apparatus, such as a reactor, used for the treatment of liquids, notably water, and including a resiliently deformable membrane, also formed with one or several orifices communicating with that or those of the fluid feeding duct, characterized in that it is made of two half shells threaded and clamped onto the fluid inlet duct, one of which having a housing for the resiliently deformable membrane and an orifice for the distribution of the fluid to the apparatus.

Abstract: A device for the automatic and pulsed delivery of an irrigation liquid, which can be connected, at its upstream side, to a source liquid under a constant or substantially constant pressure, and at its downstream side, to a distribution network equipped with pressure-responding valves. These valves are capable of closing, during the step charging of the distribution system, at a pressure equal to, or substantially equal to, the liquid feed pressure, and of opening, during irrigation liquid expelling, when the pressure decreases under said value. The device comprises a Venturi device, fed with the same irrigation liquid, from whose region of constricted stream a duct is branched off, to transmit to a sliding member depressure generated by the Venturi.

Abstract: A spraying device comprising a spray tube having a fluid entrance end connectable to a primary fluid source, and a fluid exit end upon which an additive fluid dispenser is removably mounted. The additive fluid dispenser, having a chamber for holding additive fluid and a mixing chamber, is coupled to the fluid exit end of the spray tube in coaxial alignment with the direction of flow of primary fluid through the spray tube, causing opening of a valve mechanism in the fluid dispenser. The additive fluid then is metered into the primary fluid flowing through the dispenser, by diverting a portion of the primary fluid flow against a movable piston on a piston guide member-primary fluid conduit, to cause flow of the additive fluid through the valve mechanism. The spray tube may be of elongated telescoping construction, or of nontelescoping construction, and may include a control valve.

Abstract: A water level control apparatus for controlling the water level in swimming pools, and the like, has a water nozzle having a hose connector on one end and a water outlet on the other end. A valve is formed in the water nozzle for blocking the flow of water therethrough until the nozzle is bent by a predetermined distance. The water nozzle forms a portion of the valve formed therein. A weighted float is connected to the water nozzle and has a predetermined mass for applying a gravitational force to the water nozzle sufficient to actuate the valve formed in the nozzle to allow the flow of water therethrough. The weighted float also has a predetermined floatation to reduce the gravitational force applied to the nozzle when immersed in water to a predetermined level to thereby close the valve and stop the flow of water therethrough. The weighted float can be connected to the water nozzle with a flexible cord.

Abstract: A push-in-place aerosol dispenser valve configured to advantageously utilizes pressure exerted by pressurizing gas, within a pressurized aerosol container, as a force to sealingly secure the valve in place. The valve has a compliant molded plastic primary structure that integrally includes a nozzle that is resilingly responsive to operational manipulation. Defined within the nozzle is a discharge passageway that terminates at an outlet orifice. The passageway is normally blocked by an obstruent that is moveable by manipulation of the nozzle for unblocking the passageway. And, to accommodate push-in-place mounting the primary structure has an inwardly curved bottom, and a sloping annular retaining ledge that underlies the container opening curl. The bottom, ledge and uniformly distribute force exerted against the bottom, by pressurizing gas, form an equilibrium system that prevents the valve from being dislodged from the container.

Abstract: A pop up sprinkler utilizes a diaphragm valve oriented in a vertical manner within the sprinkler water inlet. The valve has a circular bellows surrounding a core and is movable between an expanded position embracing the core and a relaxed position displaced from the core. In the displaced position water flow through the sprinkler is allowed, such flow passing about the core in a manner which creates minimal pressure loss in the valve.

Abstract: Gated pipe is mounted upon trucks. A chain is provided at each end so that the gated pipe may be towed from one position to another. Tubes are connected to necks on the gated pipe to convey the water from a dry turn row upon the field to be watered. The gate valves are located in the tubes so that the tubes with the gate valves and other flexible material may be removed to be stored in a sheltered place. A surge valve and supply connection are placed upon a center truck for surge irrigation.

Abstract: A pre-rinse unit incorporates a normally closed water shutoff valve connected to the lower end of a vertical riser pipe carrying a source of water. An outer tube is rotatably and longitudinally slidable on the riser pipe. A pair of rotatable arms are mounted for rotation at one end to the upper end of the vertical riser pipe above the outer tube for rotation about a horizontal axis and the arms carry cams contacting a cam follower ring whose lower surface abuts the outer tube. A concentric coil spring surrounding the vertical riser pipe and interiorly of the hollow tube, abuts a lower collar fixed to the riser pipe, interiorly of the tube, at its lower end and its upper end abuts the cam follower ring. Stop means carried by the riser pipe limits pivoting of the arms.

Abstract: The spray tip of a diesel fuel injector, downstream of a conventional pressure actuated injector needle valve, includes a plug holder used to support and retain a hollow inner plug valve element, containing a number of radial through orifices communicating with an annular groove in the outer peripheral surface of the plug valve element and an outer hoop valve element with a hoop-skirt valve encircling the inner plug valve element. A shrink-fit exists between the hoop-skirt valve and the inner plug valve element to provide for a zero sac volume spray tip. The hoop-skirt valve operates as an integral hoop valve which is expanded relative to the inner plug valve element when supplied with high pressure fuel to form therewith a fuel discharge annulus.

Abstract: A duck bill valve used to control fluid flow is contained in a sleeve whose wall is apertured to permit the application to the flaps of the valve of radial pressure to open the valve and permit fluid flow. A button located on the sleeve is provided to enable a user to apply the radial pressure when the valve is to be opened.

Abstract: A valve for use on a sandblasting device to control the flow of an abrasive media expelled under pressure including a tubular housing having first and second end portions and a passageway extending therebetween, the housing having a transverse opening therethrough at an intermediate location therealong intersecting the passageway, a connecting member associated with the first end portion for attaching the housing to a sandblasting device, a nozzle guard assembly having a connection associated therewith for cooperatively engaging with the second housing end portion, the nozzle guard assembly having a passageway therethrough, a nozzle element positioned in the passageway in the guard assembly communicating with the passageway in the housing structure for controlling the flow therethrough, a flexible conduit member positioned in the housing passageway and extending therein between the first and second end portions, and an operator assembly mounted on the housing structure for controlling the flow through the fle