Abstract: A twin jet carburetor includes a venturi having an elliptical cross section. Two needle jets and jet needles supply fuel to the airstream, allowing the system to operate as two carburetors in one body, but its overall size is much smaller. The elliptical shape venturi and pair of jets provide improved atomization and satisfy engine requirements at high rpm and wide-open throttle positions.

Abstract: Interchangeable venturi sleeves are removably positioned in open-ended bores of a carburetor center section. Each of the sleeves is colored a particular color corresponding to the physical parameters of the sleeve, for example, inner diameter and shape. Similarly, base plates and metering blocks of different capacities are provided such that the operating parameters of the carburetor can be changed. Like the venturi sleeves, the base plates and metering blocks are color-coded to indicate their physical parameters. With this color-coding, the observer can quickly and easily determine the physical characteristics of the carburetor.

Abstract: A variable venturi carburetor, which is part of an intake system of an internal combustion engine, includes structural features which allow an air intake path of the carburetor to be shortened, and which allow the size of air chambers of the carburetor to be reduced. A piston valve is composed of a plate-shaped valve and a tubular portion. The plate-shaped valve is guided by a pair of grooves provide in sidewalls of the intake path. The tubular portion is attached to one side of the plate-shaped valve near a center of the side of the plate-shaped valve. The tubular portion has a rectangular or square cross-section. Each side of the rectangular cross section is shorter than the internal diameter of the intake path. A flange is attached to an upper end of the piston valve. The flange is of a reduced diameter and facilitates connection of the piston valve to a diaphragm.

Abstract: Stripping of volatile substances from less volatile fluids as in the deodorisation and steam refining of fats and oils in an elongate conduit (1) in which the rate of flow of stripping gas is accelerated by having it emerge from a constriction (5;18) to which an inlet (6;20) for liquid feed material is operatively connected is achieved by having the path for food material downstream of the constriction (5;18) provided at intervals with inclined baffle surfaces (8) extended in the flow direction of the path across part of the cross-section thereof to project back into the gas within the path liquid film which has accumulated on the wall of the path.

Abstract: The invention provides a device for blocking the ingress of air on the surface of a moving member such as an optical fiber. The blocking of air is achieved by the establishment of a low pressure zone at the entry point of the fiber, the lower pressure zone being created by the injection of an inert gas in a direction opposite the direction of travel of the fiber. The invention is particularly useful in preventing the ingress of air into a UV curing apparatus for curing the ink on an optical fiber. There is also provided a method for reducing such ingress of air.

Abstract: Venturi sleeves (24, 26, 28 and 30) are telescopically moved upwardly into the bores (14, 16, 18 and 20) of the carburetor body (12) until the annular shoulder (46) of each sleeve abuts a corresponding shoulder (36) of each bore. Booster venturis (74, 76, 78 and 80) are suspended coaxially with respect to the venturi sleeves (24-30) with the support conduit (86) extending through a notch (52) at the first edge of the venturi sleeve. Positioning cords (50) are formed in the lower outer cylindrical surface (44) of each venturi sleeve (24), so that the positioning cords (50) must face and abut each other when the venturi sleeves are properly inserted into the bores of the carburetor body, thus assuring that the sleeves are properly oriented in the carburetor body. Flow director surfaces (104, 106, 108 and 110) in the carburetor bowl (102) guide the air toward the venturi sleeves.

Abstract: A booster venturi (21) is removably mounted to the barrel (11) of a carburetor (10), with the venturi ring (26) concentrically located in the barrel. The support conduit (28) extending from the venturi ring (26) terminates in a threaded end that protrudes through a fuel port (50) in the sidewall of the carburetor. A connector nut (30) is threaded onto the threaded end of the support conduit (28), to seat the protrusion (40) about the support conduit (28) in the correspondingly shaped and sized recess (42) in the sidewall (46) of the carburetor. The connector tool (80) has a probe (84) that fits the internal passage (32) of the support conduit, and tool protrusions (86) that engage the tool bores (72) of the connector nut (30) so that the nut can be mounted first on the tool (80) and then the nut can be properly positioned in the fuel port (50) and rotated about the threaded end of the support conduit (28) to precisely and rigidly mount the venturi ring (26) concentrically in the barrel of the carburetor.

Abstract: A machine for producing a graphite fiber tape suitable for use in the protion of metal matrix composites by physical vapor deposition. The machine consists of adjacent air-tight enclosures. Two venturi pipes are located within the enclosures and aligned with a gap between them. A vacuum pump draws air out of one of the air-tight enclosures. Graphite fibers are drawn through the venturi pipes and laterally spread from a tow bundle via the Venturi effect to form a thin tape.

Abstract: An in-line stripper has a venturi-conical mixer combination in which the annular space thereby is automatically adjustable in response to changes in viscosity or other property conditions.

Abstract: The dispersion of a gas in a liquid is enhanced by the use of an adjustable conical mixer to control the flow of a gas/liquid mixture to a venturi device used to accelerate the mixture to a supersonic vclocity with subsequent deacceleration to subsonic velocity to produce sonic shock waves in the mixture.

Abstract: A system with which a correction of the fuel composition upon a change in the state of load of an internal combustion engine with which a mixture-forming device (4, 6, 8, 9, 11) is associated is constructed in structurally simple manner. The mixture-forming device has a feed unit (6) for the fuel with an inlet-side fuel conveyor line (5) and a discharge-side fuel conveyor line (7) and a movably mounted feed member (18). Depending on the position of the feed member (18), the feed member (18) provides variable fuel passage cross-sections in the feed unit (6). The feed unit is connected via an opening (31) which is closed in sealing fashion by a movable equalization element (33), the equalization space (32) being connected via a branch line (34) to the discharge-side fuel conveyor line.

Abstract: The present invention proposes a fuel-air mixture-forming device for internal combustion engines, having a rotationally symmetric nozzle body (2) which, together with a rotationally symmetric throttle body (8) displaceable in it, forms a convergent-divergent nozzle which discharges into a radial diffusor (6). In the vicinity of the narrowest cross section (5) of the nozzle there is provided a fuel slot (11) extending around it and discharging into it, at least one fuel feed line (9, 10) discharging into the fuel slot. The radial diffusor is formed by a region of the nozzle body which is curved outward in the direction of flow of the mixture and by a wall (15) of a structural member (17) which forms a structural unit (18) with an intake manifold (7) of the internal combustion engine, the wall (15) lying opposite the nozzle body and being rotationally symmetric to the longitudinal axis (1) of the throttle member and having a bulge (16) pointing toward the throttle member.

Abstract: A carburetor including a throttle valve for regulating the flow of air through the body of the carburetor and to an engine, with fuel being introduced into the air flow for intermixture therewith, and with the device including an air actuated element which is preferably located downstream of the throttle valve and is adapted to be displaced automatically by the air to different positions varying in correspondence with the rate of air flow through the device, and which forms a restriction varying in size with the rate of air flow and acting to enhance dispersal of the fuel within the air and assure intimate intermixture of the air and fuel for optimum functioning of the engine. The fuel may be premixed with a secondary flow of air before delivery of the fuel and secondary air as a combined stream into the primary flow of air, and the combined stream may be drawn by vacuum into the primary flow of air at the location of the restriction formed by the flow actuated member.

Abstract: A carburetor includes a throttling rotor formed as a semi-circular cylinder rotatively mounted in an induction casing to operatively define a variable throat section of a venturi tube between the rotor and fuel nozzles mounted on one side of the casing opposite to the semi-circular cylinder, corresponding to an engine running speed, so as to enforce a sound mixing of a fuel as sucked by an air stream when passing through the throat section for increasing the efficiency of fuel combustion and engine running.

Abstract: A carburetor, for use in association with a liquid fuel, comprising a barrel means having bore-defining wall means, defining a bore therethrough, a central carburetor axis, an upstream end and a downstream end, an annular ridge forming a constriction in the barrel means, a dissipator body member of generally elongated globular pear-like shape having a maximum cross-section transverse to the barrel means complementary to and downstream of the constriction, the body member being mounted coaxially with the carburetor axis, fuel dissipating passageways through the body member for delivering fuel to the outer surface thereof downstream of the ridge, the ridge and the dissipator body member being movable relative to each other, to establish an annular air passage between the body member, and the downstream side of the ridge, and, fuel line means connecting the fuel dissipating passageways for receiving liquid fuel.

Abstract: A high-velocity carburetor for an Otto engine comprising a slide for changing the cross-section of the suction pipe, a nozzle connection receiving nozzles and a profiled nozzle needle seated on the slide and controlling the cross-section of the nozzle. One object is the precise adjustment of the air admixture and thus an optimum mixture regulation as a function of the most important parameters for the operational conditions. The nozzle connection contains two nozzles, situated coaxially to one another and separated from one another by an intermediate chamber. The intermediate chamber is connected to an outlet channel of a flow control value having a ferromagnetic membrane-like valve plate. The valve plate is operable by two coils opposing each other and being connected to push-pull outputs of a pulse generator with adjustable pulse duty factor. An input channel of the flow control valve is connected with the atmospheric air via an air filter.

Abstract: A fuel injection system of the single point, throttle body type in which a fuel injector is located centrally above the inlet to an air throttling body that contains a variable venturi consisting of a plug and nozzle assembly wherein the plug includes a fuel dispersion plate directing the fuel towards a movable nozzle together defining a convergent-divergent flow air that is variable in area in response to the dynamic pressure of the air against it at higher air flows or alternately responsive to the suction of the engine at low air flows to be moved to a position providing essentially a constant air velocity flowing past the fuel under all conditions of operation to shear the fuel and thereby atomize the same for an economical and efficient operation of the engine.

Abstract: A variable venturi type carburetor including both inner and outer venturis, a main nozzle for injecting main fuel into the inner venturi and a piston valve displaceably mounted on the outer venturi to move under the influence of negative pressure transmitted from the intake passage. The carburetor further includes an auxiliary fuel nozzle for feeding auxiliary fuel to the outer venturi in response to movement of the piston valve. The auxiliary fuel nozzle is disposed on the outer venturi adjacent to the main nozzle and the center axes of both the nozzles are located on the same or substantially same plane extending in the direction of the intake passage. A bleed air valve is mounted midway of the atmospheric pressure introduction passage which is branched from the auxiliary fuel passage so as to open the passage when higher negative pressure is transmitted from manifold.

Abstract: A carburetor has a throttle member in the form of a slide for controlling the air induction passage, the slide being displaceably guided in a sealed and sliding manner on planer edge areas of guide surfaces of a surface extending substantially at right angles to the induction passage, the slide being relieved from vertical downward pressures exerted on the guide surfaces by the manifold vacuum acting on the underside of the slide by an unloading mechanism controlled by the vacuum force, the unloading mechanism comprising lifting rails which are pivotally mounted for engagement with the slide and include rollers that may be raised or lowered by devices that are responsive to the change in vacuum below the slide as the slide moves closed or open to counteract the differential pressure force acting on the slide.

Abstract: A fuel controller has a fuel cut-off device in the form of a solenoid valve connected to an intermediate part of an air bleed commmunicating with the well of a variable choke carburetor. The fuel controller also employs a vacuum changeover valve which communicates with the engine intake manifold through a passage way and is connected to the air bleed between the solenoid valve and an air jet upstream of the solenoid valve. The solenoid valve is opened when the engine is decelerating in order to allow the well and the air bleed to communicate with each other, thereby controlling the air-fuel ratio. When the key switch is IC, the air bleed and the vacuum changeover valve communicate with the well, thereby cutting the supply of fuel to the mixing chamber.

Abstract: The invention relates to a fluid valve, in particular for use as a throttle valve in an internal combustion engine. The valve has a flow path (25) for the air (26) defined by a tube having a flexible wall (14) which separates the tube from an adjacent chamber (36), so that a change in the pressure within the chamber (36) deforms the flexible wall (14) and thus causes a change in the internal cross-section of the passage (25). When the valve is in its closed position, air can still flow through an air bypass passage (46).

Abstract: A flow regulating carburetor having a movable control element operating within the throat of a venturi air passage, the element being automatically displaced to vary the effective size of the throat as a function of the mass-volume of the air stream flowing through the passage. This produces a velocity-pressure differential acting automatically to regulate the quantity of fuel induced through a fuel tube communicating with the throat and intermingling with the air stream to provide a ratio of air-to-fuel representing the optimum value for the prevailing condition of engine speed and load throughout the entire engine operating range, thereby effecting a marked improvement in fuel economy and reducing the emission of pollutants.

Abstract: A variable venturi-type carburetor comprising a metering jet and at least one air-bleed bore formed on the cylindrical inner wall of the metering jet. The amount of air fed into the fuel passage of the carburetor from the air-bleed bore is controlled by an output signal from the oxygen concentration detector arranged in the exhaust manifold so that the air-fuel ratio of the mixture fed into the cylinder of the engine becomes equal to the stoichiometric air-fuel ratio. The metering needle is arranged so that it contacts the cylindrical inner wall of the metering jet and partially covers the air-bleed bore.

Abstract: An engine comprising a variable venturi-type carburetor which has a raised wall formed on the inner wall of the intake passage thereof. The suction piston of the carburetor has a tip face having a V-shaped cross-sectional upstream end portion which cooperates with the raised wall for defining an approximately isosceles triangle-shaped airflow-restricting opening therebetween when the amount of air flowing within the intake passage is small. An electromagnetic valve is arranged in an air-bleed passage of the carburetor and is periodically opened at a fixed frequency of 1 to 2 Hz so that the air-fuel ratio fluctuates at a fixed frequency within the range of .+-.0.2 A/F unit through a .+-.1.0 A/F unit relative to an approximately stoichiometric air-fuel ratio.

Abstract: A variable venturi carburetor comprises an auxiliary intake air passage, an auxiliary variable venturi and a non-adjustable nozzle portion, in addition to a main intake air passage, a main variable venturi and an adjustable nozzle portion. If the amount of intake air is small as when the engine is being idled, intake air is passed mainly through the auxiliary variable venturi to generate vacuum sufficiently high to jet fuel into the auxiliary intake passage through the non-adjustable nozzle portion. If the amount of intake air is great as when the engine is running under a heavy load, intake air is passed mainly through the main variable venturi. Since two venturis are formed, it is possible to smoothly increase the amount of fuel to be jetted into the intake passage over a wide engine operating condition.

Abstract: A carburetor which is responsive to an operator controlled throttle includes a fuel metering and dispersion system for optimally mixing a fuel with air in preparation for the injection into the intake manifold of an internal combustion engine. The carburetor includes a housing with an air-fuel mixing passageway extending vertically therethrough and a fuel dispersion bar transverse to the air-fuel mixing passageway with a plurality of fuel dispersion openings therein for injecting fuel into the air-fuel mixing passageway transverse to the flow of air. A fuel pressure controlled spool valve in the dispersion bar varies the amount by which the fuel dispersion openings are opened in response to the volume of fuel entering the dispersion bar. Venturi plates upstream of the fuel dispersion bar are pivotally attached for variably opening and closing the air-fuel passageway.

Abstract: A carburetor has a throttle member in the form of a laterally movable slide controlling the size of the induction passage. At planar edge areas of the guide surfaces, the slide is sealingly and slidably guided on a surface extending normal to the induction passage. The slide is unloaded from vertical downward pressures exerted on the guide surfaces by an unloading mechanism controlled by engine manifold vacuum. Such an unloading mechanism can consist of a parallelogram lever arrangement which through a pressure chamber actuates lifting rails arranged laterally to the guide surfaces. The slide is supported on the lifting rails by roller arrangements.

Abstract: A variable venturi-type carburetor comprising a suction piston which has a tip face having an upstream end portion. A raised wall is formed on the inner wall of the intake passage. The upstream end portion of the suction piston cooperates with the tip edge of the raised wall to restrict the flow of air flowing within the intake passage. The upstream end portion of the suction piston has a V-shaped central portion and flat opposed end portions. The tip edge of the raised wall has a flat central portion cooperating with the V-shaped central portion of the suction piston and has opposed end portions cooperating with the flat opposed end portions of the suction piston and projecting towards the intake passage.

Abstract: A variable venturi-type carburetor comprising a suction piston which has a tip face defining a venturi portion. The tip face has a needle-mounting face at the center thereof, and a metering needle is fixed onto the needle-mounting face. The tip face also has a projecting tip face portion located upstream of the needle and projecting from the needle-mounting face towards the venturi portion. A groove, extending along the axis of the intake passage of the carburetor, is formed on the projecting tip face portion. The projecting tip face portion has a V-shaped cross-section which expands from the groove towards the venturi portion.

Abstract: A variable venturi-type carburetor comprising a suction piston which has a tip face defining a venturi portion. The tip face has a projecting tip face portion located upstream of the needle and projecting toward the venturi portion. A groove, extending along the axis of the intake passage of the carburetor, is formed on the projecting tip face portion. The projecting tip face portion has a V-shaped cross-section which expands from the groove toward the venturi portion. A projection, having a V-shaped cross-section, is formed on the inner wall of the intake passage, which faces the tip face of the intake passage, which faces the tip face of the suction piston. The projection enters into the V-shaped cross-section of the projecting tip face portion of the suction piston when the amount of air fed into the cylinder of the engine is small.

Abstract: Disclosed herein is a variable venturi carburetor including at least one pressure controlling port provided at the lower peripheral portion of the suction piston and adapted to face to a mixing chamber defined directly downstream of the venturi portion. The pressure controlling port is located at such a position as to communicate with the suction chamber and an atmospheric pressure chamber during middle and high intake air flowing stages as the suction piston reciprocates transversely with respect to the venturi portion, and to communicate with the suction chamber and the mixing chamber during low intake air flowing stage.

Abstract: A variable venturi carburetor has a vertically movable head which moves along the downwardly extending induction passage. The movable head includes a lower member whose vertical position is determined by an accelerator pedal for the engine on which the carburetor is adapted and an upper member defining within the induction passage an annular venturi zone and being vertically movable relative to the lower member to vary the cross sectional area of the venturi zone in response to the negative pressure developed behind the venturi zone within the induction passage. Thus, the venturi zone area is varied depending on the depression of the accelerator pedal as well as the negative pressure indicative of the ongoing engine condition such that an optimum amount of fuel is drawn therefrom to efficiently operate the engine throughout the operational range of engine RPM and load conditions.

Abstract: A side draft carburetor is disclosed in which an eccentrically mounted throttle plate is provided with an aperture for passage of air therethrough and for movement of the throttle plate over a nozzle block interferingly projecting into the main air passageway of the carburetor. The nozzle block is equipped with a nozzle for introducing fuel into a venturi passageway formed between the nozzle block and a cam surface located about the rotational axis of the throttle plate; the cam surface moving with the throttle plate to vary the size and shape of the venturi passageway at the point of fuel introduction. This produces a finely atomized fuel mixture substantially centrally of the main air stream for optimum diffusion of the incoming fuel.

Abstract: An apparatus and method for the emulsification of fluids. Mixing of the fluids may occur before the fluids enter the apparatus, or in the apparatus. Extremely low pressure is created and maintained in an apparatus chamber by accelerating the flow velocity of at least one fluid as flow occurs from a larger to a smaller diameter passageway. Vapors of the fluids to be emulsified mix in said low pressure passageway, which may be a venturi tube. When the mixed vapors flow from the smaller diameter passageway to a second larger diameter outlet passageway, deceleration results in a pressure increase which causes the mixed vapors to collapse into the emulsified products. A single emulsification in the apparatus produces emulsified particles with diameters in the range of 0.01 to 2 microns. The apparatus is capable of homogenizing milk, emulsifying fuel and water, emulsifying solutions with immiscible fluids, and producing other regular or thixotropic emulsions.

Abstract: A system for an existing combustion engine is provided for enabling the engine to be operated on liquefied propane, alone, through a conventional gasoline carburetor, to operate on either gasoline or liquefied propane through a conventional gasoline carburetor, to operate on liquefied propane, alone, through an inlet casting to be utilized in lieu of a conventional gasoline carburetor, or to operate on liquefied propane, alone, at a substantially constant engine speed. Further, the system is also operative in conjunction with a diesel engine whereby a small amount of gasified liquid propane may be introduced into the induction system of a diesel engine as a supplemental fuel charge therefor during high power demand periods of operation.

Abstract: A fluidic control system provided with a variable Venturi structure whose movable element is automatically shifted as a function of the mass-volume of fluids passing through the structure to produce an output which depends on the adjusted position of the element or the resultant velocity-pressure. The system is applicable to the metering, proportioning and blending of fluids. In the context of an internal combustion automotive engine in which the variable Venturi structure acts to intermingle combustion air and fuel prior to ignition, the system provides a stoichiometric or other ratio of air-to-fuel that represents the optimum value for the prevailing condition of engine speed and load throughout a broad operating range, thereby effecting a marked improvement in fuel economy and reducing the emission of pollutants.

Abstract: An annular gap washer for scrubbing a gas stream with a liquid, especially for the scrubbing of blast furnace gases with water such that the adjustment of the width of the annular gap controls the pressure at the head of the blast furnace, comprises the usual housing or duct with a tapering configuration and a body axially movable in this duct and with a tapering configuration so that the annular gap is formed between this body and the duct wall. According to the invention, the base angles of the body and the duct walls are different such that the gap converges in the direction of flow of the gases, thereby reducing vibrations or oscillation of the body without interfering with scrubbing efficiency.

Abstract: A carburetor having a tapered plug adjusting air flow into the throat of a carburetor housing air passageway. A control arm connected to the plug and guided by a groove in the housing shaped to move the plug more rapidly in the upstream than in the downstream portion of the plug travel. A stationary fuel supply tube in a bore in the plug so that movement of the plug controls flow out of the fuel supply tube outlet. The outlet is sheltered and has adjacent baffles to resist fuel pickup in engine air blowback. A needle valve spindle located at the opposite side of the housing from the propeller.

Abstract: An annular-gap washer especially for scrubbing of industrial gases, comprises a central body which is axially shiftable in a housing defining an all-around clearance with the body. The clearance forms an annular gap through which the gas stream and water droplets from a spray nozzle axially spaced from the gap, are accelerated and brought into intimate contact. According to the invention at least over part of the gap, the mixture is subjected to an electrostatic field having generally radial field lines.

Abstract: A closed-loop fluidic control servo system for a vehicle having an internal combustion engine provided with a variable Venturi carburetor having an axially-shiftable spool operated by a vacuum motor. The system acts automatically through the motor to maintain the ratio of fuel-to-air supplied by the Venturi carburetor to the intake manifold of the system at the optimum value during all prevailing conditions of engine speed and load encountered in vehicular operation. The system includes a vacuum amplifier coupled to the intake manifold and responsive to a differential vacuum signal developed between the pressures existing at the inlet and throat of the Venturi to produce a proportionally amplified vacuum which is derived from the intake manifold vacuum and is a function of the vacuum signal. The proportionally amplified vacuum serves to energize the vacuum motor to shift the axial position thereof in a direction and to an extent bringing about the desired fuel-to-air ratio.

Abstract: A horizontally disposed scrubber is provided with a generally horizontally disposed adjustable venturi having a slot-type liquid introduction through which a liquid is introduced into a particle laden gas stream.

Abstract: A carburetor and valving therefor comprising a hollow tubular housing secured between top and base plates, said housing having outer and inner walls. A roller valve having a bore through the axis thereof and a radially extending pre-mixing chamber intersecting said bore is rotatably positioned within said housing by a pair of rods. The roller valve has a plurality of chordal ribs thereon, and spaces between said chordal ribs define air guides converging towards the opening of said pre-mixing chamber. One of said rods has a bore extending therethrough and opens into a larger bore at the inner end thereof. The circumference of the inner end of the rod has a rectangular cut-out therein, said cut-out having a flat wall through which a plurality of off-set orifices extend into the inner larger bore. The other of said rods has a reduced inner end portion having a chamber therein and a bore extending from the front face of the inner end extends into said chamber.

Abstract: A carburetor for connection to an internal combustion engine having a housing provided with a mixing passage for the flow of air to the engine; a throttle at the downstream end of the passage; a fuel spray bar extending transversely across the passage upstream of the throttle having transversely oppositely disposed fuel orifices facing the walls of the passage; a pair of venturi plates mounted for pivotal movement about individual axes upstream of the bar and spaced oppositely and transversely from the bar, the plates having distal ends and pivoting between closed, convergent positions in which the distal ends are adjacent to the bar and open positions in which the plates diverge from the bar, thereby defining an adjustable throat; a source of fuel; a conduit interconnecting the orifices and the source; a plunger-actuated valve in the conduit for controlling the flow of fuel from the source; a rotationally mounted cam adjacent to the valve having a cam surface in controlling relation with the valve; and a lin

Abstract: A carburetor which comprises a casing, an air inlet at the upper end thereof and an air-fuel mixture discharge at the lower end thereof, with a venturi throat located downwardly of said inlet, a sonic throat below said venturi throat, and a diffuser section interconnecting the sonic throat and the discharge. Portions of the wall of the sonic throat are provided with a plurality of indentations, projections, or surface irregularities for stabilizing the flow therethrough and conducing to the uniformity of the air-fuel mixture. At least one portion of said sonic throat is movable with respect to the fixed portions of said throat for altering the cross-section thereof responsive to fuel requirements for combustion.

Abstract: A variable Venturi condition responsive carburetor wherein a control ring, movable in response to engine operating conditions regulates the amount of air that is mixed with incoming fuel as it passes through metering tubes to provide for total air fuel mixing prior to its being introduced into the combustion chambers of an internal combustion engine. The control ring also regulates the amount of fuel supplied through the metering stem, provides a means for providing automatic compensation for fuel mix changes necessary due to changes in atmospheric pressure such as will occur during altitude changes and regulates flow through a demand fuel circuit. An arrangement of fixed and movable Venturi elements is used to vary the fuel flow through the carburetor in response to the throttle linkage manipulation.

Abstract: A variable venturi carburetor is disclosed which includes a mixture conduit having therein a throttle plate, a fixed venturi, and a vacuum sustaining plate for variably opening and closing the throat of the fixed venturi. A first fuel nozzle opens into the mixture conduit at a point on the downstream side of the vacuum sustaining plate. An electromagnetic valve is provided for controlling the amount of fuel drawn from the auxiliary fuel nozzle so that it can vary in accordance with the degree of opening of the vacuum sustaining plate but is held at a level when the degree of opening of the vacuum sustaining plate is over a predetermined level. A second fuel nozzle is provided which opens into the mixture conduit at a point on the upstream of the vacuum sustaining plate for allowing discharge of fuel in amounts proportional to vacuums appearing in the mixture conduit upstream of the vacuum sustaining plate.

Abstract: Improved fuel preparation for an internal combustion engine wherein a concave, upstream-facing dispersion surface terminates in a sharp downstream edge with an undercut immediately downstream of the edge and liquid fuel is sprayed under pressure through orifices onto the dispersion surface and allowed to spread out and be sheared by the induction air from the dispersion surface at the sharp edge thereof.

Abstract: An improved air cleaning device is provided for removing solid particulate matter from a contaminated air stream. The air cleaning device comprises a main housing having an air inlet and an air outlet. The air cleaning device further includes a wash section having a tubular housing with its upper end forming the contaminated air inlet and its lower end being open to the interior of the housing. A wash liquid disperser adjacent the upper end of the wash section housing injects a wash fluid into the contaminated air stream, while a venturi downstream from the dispenser accelerates the contaminated air stream now intermixed with the wash liquid downwardly through the wash section housing. The venturi comprises a pair of baffles each having an upper edge portion, a lower edge portion and forming a convex surface therebetween. The baffles are attached to facing walls in the wash section housing and so that the convex surface of the baffles face or protrude toward each other.

Abstract: A purifying system is disclosed for the removal of small particles of impurities from a gaseous mixture flowing in a conduit, including a venturi connected in series in the conduit, a liquid injection device for introducing jets of liquid to produce a liquid mist pattern extending transversely within the venturi to moisturize the small particles of impurities, and a regulator operable in response to the pressure differential across the venturi for adjusting the effective cross-section of the venturi and/or the operation of the injection device, thereby to maintain the pressure differential across the venturi at a predetermined value.

Abstract: An automatic control system for supplying a fuel-air mixture to an internal combustion engine through a Venturi structure conducting throttle-controlled incoming air to the intake manifold of the engine. Coaxially disposed in the casing of the structure is a cylindrical booster whose internal surface has a Venturi configuration to define a primary passage. Interposed between the booster and a ring having an external Venturi configuration mounted on the casing in an axially shiftable spool whose internal surface has a Venturi configuration to define a secondary passage having a variable throat between this surface and the spool. A tertiary passage is defined between the outer surface of the spool and the ring, incoming air passing through all three passages.