Abstract: An apparatus and method is described that allows for the production of gas-filled vortex rings in a host liquid. The device consists of a source of gas under pressure that is used to supply an accumulator by means of a regulation valve. The accumulator has an outlet that feeds the gas in the accumulator to an electrically operated solenoid valve that is normally closed. The outlet of this valve leads to a nozzle that protrudes into a vessel containing the liquid in which it is desired to form the rings. Upon receiving an electrical pulse of known duration, the solenoid valve opens for that duration and allows a momentary pulse of gas to flow from the accumulator into the nozzle. If the pulse duration is correctly set, a vortex bubble forms at the exit of the nozzle which self-organizes into a defined ring once the gas flow ceases.

Abstract: A liquid coater generating mists from liquid in a container and discharging the mists to the outside of the container. The liquid coater includes a lower nozzle having a gas injection port in the liquid, an upper nozzle having a gas injection port in the upper part of the container, and a mist conveying passage provided in the upper part of the container. The mist conveying passage conveys mists in the container to the outside of the container, and the mists are generated by injecting gas from the gas injection port of the lower nozzle. In addition, the gas injection port of the upper nozzle and the gas injection port of the lower nozzle are arranged so that gas is injected toward an inner-wall side face of the container from both the gas injection ports.

Abstract: The invention relates to a carburetor arrangement for an internal combustion engine (1), especially for a drive motor of a work apparatus such as a motor-driven chain saw, a brushcutter, a cutoff machine or the like. The carburetor arrangement includes a carburetor (2) having an intake channel (3) and an air filter (4) mounted upstream of the intake channel (3). The air filter (4) has an air filter housing (5). The intake channel (3) opens with an intake opening (6) in a housing base (7) of the air filter housing (5). The intake opening (6) can be covered at least partially by a choke element (8). The choke element (8) is held on a choke carrier (9) so as to permit a limited movement of the choke element.

Abstract: A carburetor arrangement for an internal combustion engine including a two-stroke engine in a portable handheld work apparatus includes an intake channel section (2) which is formed in the carburetor housing (34). A throttle flap (3) is arranged in the intake channel section and is rotatably held by a throttle flap shaft (4). Fuel-conducting channels open into the intake channel section (2) in the region of the throttle flap. A choke flap (5) is mounted upstream of the throttle flap (3) in the intake channel section (2). The choke flap (5) is held by a choke shaft (6) so as to be rotatable. The throttle flap (3) is displaced in a closing direction from an opening position into a closed position and in an opening direction from the closed position into the open position. The same applies to the choke flap (5). The choke flap (5) and the throttle flap (3) are mechanically coupled. The choke shaft (6) is actuable by an operator-controlled element.

Abstract: The invention relates to a device that sets liquid or solid substances in motion and to a method for the implementation of said device. The invention more specifically relates to a device that sets liquid or solid substances in motion by means of gas bubbles, comprising a receptacle for said substances, at least one moveable gas emitting nozzle arranged in the lower part of said receptacle, and a system for conveying the gas to said nozzle.

Abstract: A homogeneous foam is obtained by providing a plate formed with numerous capillary tubes which divide a gas stream into elementary gas components spaced equidistantly from one another upon entering a foaming composition. The gas stream is controllably interrupted to obtain a succession of gas doses supplied to the plate in a time and pressure-controlled manner; the plate is controllably displaced to allow gas bubbles to separate from the plate between consecutive gas doses.

Abstract: Flange assembly for supporting a structure that provides scavenging air supply to an internal combustion engine at the carburetor to the engine. The assembly includes a thin-body flange that is configured to be abuttingly installed upon an end surface of the carburetor. The carburetor has its combustion air intake or port exposed at an outer surface for intaking air for the combustion process. The thin construction of the flange enables advantageous positioning of the adaptive flange. The relative dimensioning of the thin-body flange also contributes to its low-impact as a modification to air inlet arrangement. A combustion air aperture is provided that extends through the thin-body flange. The combustion air aperture is located in the flange for alignment with the combustion air intake. By this alignment, fluid communication is established across the flange and into the carburetor when the flange is abuttingly installed upon the carburetor.

Abstract: A scrubber for removing soluble materials from harmful gaseous effluents with high efficiency and safety is disclosed. By using twice mixes of the scrubbing liquid and the harmful gaseous effluent, the scrubber meets the standards of environmental protection. The scrubber of this invention also prevents the problems of factory safety presented in the conventional fume scrubber. Owing to the high efficiency of the mixing of the harmful gaseous effluent and the scrubbing liquid, the production facilities or processing units need not stop operating once the supply of the scrubbing liquid terminates.

Abstract: The invention is a method and apparatus for generating vortex rings in a fluid medium. The apparatus is immersed in a body of water, and an air pump feeds gas in the form of air directly into the base of the apparatus through a gas inlet or the gas is provided from a container with a Finite quantity of gas. A nozzle extends from the gas inlet to a pocket located on an underside of a lever. As air is pumped into the pocket, the air forms a single bubble, and when the force of the air mass exceeds the weight of the lever, the lever rises and the air mass travels as a cohesive unit to an exit nozzle. When the lever reaches the maximum height displacement defined by a resilient upper stop, the air exits the lever through a nozzle and forms a vortex ring.

Abstract: A liquid coater which includes a mist feed tube (5) for feeding oil mist into an airtight container (2), an air hose (10) for feeding air into the airtight container (2) and a mist conveyor pipe (11) for conveying the oil mist pressurized by air inside the airtight container (2) to the outside of the container. Therefore, droplets and large mist particles can be trapped inside the container from the mist feed tube (5), and the mist can be conveyed at a high speed. The liquid coater has excellent applicability. The mist feed tube (5) has a double tube structure comprising an air tube (7) in which air flows, and an oil tube (6) which extends in the air tube (7) and in which the oil flows. The distal end of the oil tube (6) is positioned more inward than the distal end of the air tube (7), so that the oil mist can be fed by a simple construction.

Abstract: A gas solution producing device having a simple structure to reduce a start-up time, and capable of reducing an amount of gas or solution for use, and a method therefor, as well as a cleaning device employing them. An ozone water solution producing device of the present invention includes a gas dissolving module for bringing ozone gas and deionized water in contact with each other for production of ozone solution, a gas introducing pipe for introducing ozone gas from an ozone gas producing device to the gas dissolving module, a buffer, connected on the gas introducing pipe, for temporarily storing ozone gas and thereafter discharging the gas stored to the gas introducing pipe, a first valve for opening or closing the gas introducing pipe to switch introduction and suspension of gas flow to the gas dissolving module, and backflow prevention valve for preventing a backflow of the gas discharged from the buffer.

Abstract: A carburetor comprising four distinct features providing improved performance: A sculpted chamber comprising D-shaped configuration; a fuel flow interference needle multiply comprised with bevel zones; easily accessible needle advancement and retraction means; and a centrally disposed auxiliary fuel jet aperture emission site.

Abstract: A bubble generating device is to be used with a water tank which has a water receiving chamber, and includes a bubble emission member adapted to be disposed in the water receiving chamber and formed with bubble emission holes, an air pump for providing pressurized air, a first air passage tube with a first end connected to the air pump and an opposite second end, and a second air passage tube with a first end connected to the bubble emission member and an opposite second end. The control unit includes a cam wheel, a valve seat formed with an air chamber which communicates fluidly the second ends of the first and second air passage tubes, and a spring-loaded piston rod with a first end portion in contact with a peripheral cam surface of the cam wheel and a second end portion extending into the air chamber and provided with a valve piece.

Abstract: A oxygenator for oxygenating water in swimming pools. The oxygenator includes a chamber which has a port outwardly extending therefrom for drawing air into the chamber. A venturi is extended through the chamber. The venturi has opposite inlet and outlet ends, opposite generally frusta-conical inlet and outlet portions and an intermediate portion interposed between the inlet and outlet portions of the venturi. The intermediate portion of the venturi has a plurality of spaced apart apertures therethrough to permit passage of air in the chamber into the intermediate portion of the venturi.

Abstract: A diaphragm carburetor for an internal combustion engine has a carburetor housing having an intake channel with a venturi section. A plate valve is positioned in the intake channel. A fuel outlet valve is mounted in the venturi section. A fuel-filled control chamber is provided and delimited at one side by a diaphragm. A fuel supply channel is connected to the control chamber. A supply valve is mounted in the fuel supply channel and actuated by the diaphragm. A first fuel channel connects the control chamber and the fuel outlet valve. At least one fixed main throttle is mounted in the first fuel channel for fixedly determining a fuel flow cross-section to the fuel outlet valve. A lever is provided for actuating the valve plate. An adjustable stop cooperates with the lever. The flow cross-section of the intake air is adjusted by the stop to a desired air/fuel ratio and is changeable, in a limited range, in a direction of increasing the flow cross-section.