Abstract: A carburetor assembly (1) has an intake channel section (30) and an air channel section (31). In the intake channel section (30), a throttle element and a choke element are arranged. An air control element is arranged in the air channel section (31). A first coupling unit (25) is provided which defines the position of the throttle element in at least one start position of the carburetor assembly (1). A second coupling unit (26) couples the position of the air control element in at least one operating state to the position of the throttle element. To ensure a reliable start, the choke element is held in at least one start position by the first coupling unit (25) and the second coupling unit (26).

Abstract: A cruising aerator includes a raft, a motor mounted on the raft, a shaft driven by the motor, a first impeller mounted on the shaft, a second impeller mounted on the shaft, and a common chamber. The cruising aerator further includes a sequential controller connected to the motor for controlling the motor to rotate clockwise or counterclockwise. The motor, the shaft and impellers are installed inside of the common chamber. The common chamber has a common inlet disposed under a water surface. A first outlet and a second outlet of the common chamber are arranged to face in opposite directions. The first impeller and second impeller are assembled to have opposite normal rotating directions to each other according to a rotating direction of the motor.

Abstract: Methods and apparatus are disclosed for mixing fluid streams of different compositions to minimize fluid condensation inside a mixing vessel where the objective is to produce an all-vapor mixture product.

Abstract: A fuel conversion device comprises a restriction in a carburetion system configured to draw a gaseous fuel and air into the carburetion system. The fuel conversion device comprises an air inlet and a fuel air outlet coupled within the restriction. The fuel conversion device includes a throat and a fuel supply passage near the throat. The fuel supply passage is located between an air inlet first end and a fuel air outlet second end from about 40 to about 55 percent of a venturi length measured from the fuel air outlet second end. A ratio between a restriction diameter and the venturi length comprises at most about 1.38 to 1. The air inlet has a radius with the fuel supply passage formed as slots, or a radius with the fuel supply passage formed as bores, or a taper with the fuel supply passage formed as slots.

Abstract: An electrostatic discharge (ESD) protection technique protects a semiconductor device against electrostatic discharge events. The semiconductor device has a pad for receiving a signal. The technique uses an ESD protection circuit that includes a voltage limiter having an input to receive a control voltage that is independent of a pad voltage on the pad; an output to provide, in response to the control voltage, a limited voltage having a magnitude that is less than a magnitude of the control voltage when the control voltage is non-zero and in a steady state; an arrangement of stacked transistors interconnected between the input and the output of the voltage limiter; and a pull-up transistor that is interconnected between the pad and the output of the voltage limiter. A magnitude of the pad voltage is less than the control voltage when the semiconductor device is in a normal operating mode.

Abstract: An internal combustion engine is provided with a biased by-pass throttle valve that trims the flow of supplementary combustion air for mixing with basic combustion air and fuel induced in carburetor venturi. The by-pass throttle valve is controlled by an electrical stepmotor that is regulated by a pre-programmed microprocessor in response to sensed engine speed and engine manifold pressure conditions to thereby improve engine operating efficiency and reduce noxious emissions without utilizing catalytic converter equipment.

Abstract: A engine intake system includes a deceleration valve (10) which is biased in one direction by idle vacuum and in the opposite direction by manifold vacuum. Idle vacuum is admitted to and stored in a pressure chamber (30) in the valve each time the engine idles. When the engine is not idling, manifold vacuum is admitted to another pressure chamber (28) in the valve. A diaphragm (24) separates the two chambers and is connected to a valve member (18) which opens and closes the deceleration passage (12).

Abstract: A dual purpose dust-collecting device consisting of an upright cylinder tapered at the lower end to form a settling chamber containing water. An inner cylinder formed with a plurality of circumferentially spaced tangential inlets is secured to the inside of the cylinder to define therewith an annular gas stream passage. A swinging inlet damper mounted in a manifold having an upper tangential gas outlet and a lower tangential gas outlet leading to the upper and lower ends of the cylinder respectively is employed for selectively admitting gas from the manifold inlet to the upper end of the cylinder or to the annular gas passage. When dirty gas enters the annular passage under the action of an exhaust fan mounted atop the cylinder, a whirling gas stream will be created therein and forced through the tangential inlets into the inner cylinder wherein a rapidly rotating whirlpool will be created which causes separation of particles from the dirty gas stream.

Abstract: A floatless variable venturi type carburetor in which the float chamber is substituted by a fuel pressure regulator. The carburetor has, in addition to the ordinary constituents such as variable orifice, fuel metering jet and air bleed, a fuel valve disposed in the fuel passage leading to the fuel metering jet and adapted to be opened and closed in relation to the turning on and off of the engine key switch, and a fuel pressure regulator adapted to regulate the pressure of the fuel introduced to the fuel metering jet through the fuel valve. The fuel pressure regulator has two regulating chambers, one of which being communicated with the inlet side of the fuel valve while the other being in communication with a venturi vacuum pickup port, so that the fuel pressure regulator maintains a constant pressure differential, by the action of a diaphragm separating two regulating chambers, between the fuel pressure at the inlet side of the fuel metering jet and the venturi vacuum.

Abstract: A closed chamber is provided for containing evaporative liquid fuel for a combustion engine and fuel supply structure is operatively associated with the chamber for maintaining a predetermined general level of liquid fuel in the chamber. The chamber includes engine induction air inlet structure opening thereinto below the aforementioned liquid level and a vaporized fuel and air outlet opening outwardly of the chamber from a level above the predetermined liquid fuel level. Duct structure is provided including an inlet portion communicated with the vaporized fuel and air outlet and an outlet end for communication with the induction passags of a combustion engine. Further, an air conditioner evaporator-type heat exchanger is provided and liquid fuel conduit and pump structure is operatively associated with the chamber and heat exchanger for circulating fuel within the chamber through the heat exchanger.

Abstract: The induction tube of an internal combustion engine is provided with an air flow measuring device which may be part of a carburetor and with a normal throttle valve, settable arbitrarily from the outside. A bypass channel conducts air around one or both of these elements and contains a flow restricting device. The induction tube further includes an air flow throttling mechanism for establishing a definite pressure drop across the inlet and terminus of the bypass to insure air flow therethrough even at full throttle and low rpm when the engine vacuum is low. The air flow throttling mechanism may be a pivoted baffle plate or a slide which enters the induction tube and partially blocks the air flow therethrough and which is moved by differential pressures in the induction tube. The slide retracts from the induction tube at full throttle and at high engine speed.

Abstract: A vaporizer for anaesthetics or narcotics comprises a housing having an interior liquid anaesthetic reservoir and an evaporation chamber above the reservoir. An inlet into the housing divides so that there is a vaporizing flow passage over and through a coiled vaporizing tube wick in an annular passage down to the liquid anaesthetic, then upwardly in a central passage and past a regulatable annular passage to a discharge passage. The inlet also includes a bypass flow through a passage which joins an annular space above the vaporizing chamber portion above the anaesthetic liquid and back to the discharge passage. A control device is located in the second or bypass passage and comprises an annular trough-shape body having a closed bottom wall which is of a material of a high coefficient of thermal expansion. A hollow cylinder is positioned in the trough-shape annular body and forms a close fit therewith and has a low coefficient of thermal expansion relative to the trough-shape body.