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| Number | Title | Issue Date |
| 7032842 | Spray element for a spray head In a spray element for a spray head for spraying the molds of pressure casting machines, a control piston for the release of the parting agent supply is disposed beside the spray nozzle and a connecting passage opens in a chamber of the housing in which one end of t... | 04/25/2006 |
| 7028993 | Charge forming apparatus A charge forming apparatus for delivering a controlled mixture of fuel-and-air to an engine has a butterfly-type throttle-choke valve disposed in a fuel-and-air mixing passage. Incoming air flowing through a downstream primary venturi of the mixing passage creates a... | 04/18/2006 |
| 6941925 | Fuel supply control system for engine In a fuel supply control system for an engine in which a valve housing is provided with a negative pressure working chamber, and a negative pressure responsive-type control valve operable to be opened and closed in response to generation and extinction of a negative... | 09/13/2005 |
| 6913250 | Carburetor arrangement A carburetor arrangement for an internal combustion engine in a manually guided implement, such as a power chainsaw, a cut-off machine, etc. is provided. A regulating chamber delimited by a regulating diaphragm is provided. Upon deflection of the diaphragm due to un... | 07/05/2005 |
| 6494180 | Implement having speed regulation A manually guided implement having an internal combustion engine is provided. A fuel/air mixture is supplied to the internal combustion engine via a diaphragm carburetor. The engine is cooled by a cooling fan that is driven by the internal combustion engi... | 12/17/2002 |
| 6234456 | Diaphragm carburetor 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 cont... | 05/22/2001 |
| 6217008 | Diaphragm-type carburetor In a diaphragm-type carburetor, a fuel vapor treating chamber is provided in a downstream fuel passage which interconnects a fuel pump operated in response to a pulsation pressure from a pulsation pressure generating source and an inlet bore in a constant... | 04/17/2001 |
| 6202988 | Diaphragm-type carburetor A diaphragm-type carburetor includes a fuel well communicating with a lower end of a fuel nozzle, a constant-pressure fuel chamber communicating with the fuel well through an outlet bore, and a fuel pump incorporated in fuel passages defined between an in... | 03/20/2001 |
| 5879595 | Carburetor internal vent and fuel regulation assembly An internal vent system contains a pressure sensing orifice located in a carburetor main bore or an auxiliary bore. In one embodiment, this orifice is moved thereby sensing different combinations of total and static pressure of the moving gas stream in wh... | 03/09/1999 |
| 5817257 | Fuel metering system A fuel metering system comprises a throttle body 1 having an air passage 2, a throttle valve 6 mounted in the air passage, and at least one port 9-11, 13 opening into the air passage which is responsive to engine manifold vacuum to provide a negative pres... | 10/06/1998 |
| 5527495 | Charge forming fuel system A fuel sensing diaphragm and an air sensing diaphragm apply opposing forces to a transfer member. The forces applied by the fuel sensing diaphragm are based upon the flow rate of fuel, and the forces applied by the air sensing diaphragm are based upon the... | 06/18/1996 |
| 5516464 | Charge-forming fuel system for an internal combustion engine A single pivoting diaphragm plate is utilized to separate the two air-sensing chambers and the two fuel-sensing chambers. The diaphragm plate is bonded to a resilient diaphragm/seal which separates and seals the four chambers and allows for the pivoting a... | 05/14/1996 |
| 5133905 | Fuel metering method and apparatus Method, system and apparatus for metering fuel to an internal combustion engine via a carburetor having a mixture conduit with a venturi therein. A main fuel nozzle supplies fuel to the venturi of the carburetor in response to the static pressure drop ind... | 07/28/1992 |
| 4965023 | Carburetor having bidirectional fuel passage An improved bidirectional fuel passage carburetor includes an air density compensator and overall trim, an increased idle air and enrichment device, an air bounce check valve, a fuel valve shutoff, and a load enrichment device. In an alternate embodiment,... | 10/23/1990 |
| 4787356 | Carburetor arrangement for changing the ratio of the air/fuel mixture in handheld motor-driven apparatus A carburetor arrangement changes the ratio of air and fuel in the air/fuel mixture for an internal combustion engine of a handheld motor-driven apparatus such as a chain saw, hedge trimmer or the like. The carburetor arrangement includes a membrane carbur... | 11/29/1988 |
| 4670194 | Carburetor A carburetor including a fuel inlet and first air inlet delivering fuel and air to a location at which they are intermixed, and from which they flow toward an outlet of the device, with additional air being introduced into the stream through a second air ... | 06/02/1987 |
| 4632788 | Carburetor fuel feed system with bidirectional passage An improved carburetor is provided wherein a bidirectional passage is provided between an air velocity reader and a location downstream of a throttle. Metered fuel flows into the bidirectional passage adjacent the air velocity reader. Flow direction in th... | 12/30/1986 |
| 4494511 | Fuel injection system for internal combustion engines In a fuel injection system which electrically controls an amount of pressurized fuel supplied to an internal combustion engine, an electromagnetic valve which opens to inject the pressurized fuel is disposed at an upstream of a throttle valve in an intake... | 01/22/1985 |
| 4435151 | Fuel supply control system A fuel supply control system including a major area diaphragm and a minor area diaphragm defining therebetween a reference pressure chamber. A control pressure chamber is located adjacent the major area diaphragm on a side thereof opposite to the referenc... | 03/06/1984 |
| 4414163 | Fuel feed and charge forming apparatus The disclosure embraces a fuel feed and charge forming apparatus wherein the apparatus is of comparatively small size particularly for use with chain saws and other motor driven tools to effect the reduction in weight. The charge forming apparatus embodie... | 11/08/1983 |
| 4359031 | Engine air flow responsive control An engine charge forming device controls the fuel metering orifice area in proportion to the throttled air flow area of the induction passage and controls the pressure drop across the fuel metering orifice in proportion to a vacuum signal which is substan... | 11/16/1982 |
| 4290399 | Floatless variable venturi type carburetor 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 dispo... | 09/22/1981 |
| 4285700 | Fuel enrichment apparatus and method for gaseous fuel mixers A fuel enrichment apparatus and method is shown for a gaseous fuel carburetor of either a fixed venturi or air valve type. The apparatus provides fuel enriching at the starting and wide open throttle conditions of the carburetor when the pressure drop in ... | 08/25/1981 |
| 4216175 | Carburetor for combustion engines A carburetor for combustion engines, having upstream of an arbitrarily operated throttle valve, an additional throttling element which is controlled automatically by a membrane unit operated by underpressure of vacuum in accordance with air flow. The addi... | 08/05/1980 |
| 4166084 | Bubble maker A Bubble Maker to be used for adding air fresheners, deodorants, cleaners, perfume or water to air space in the form of bubbles which are then absorbed into the space to be treated.... | 08/28/1979 |
| 4160425 | Fuel system for aquatic craft A self-powered aquatic craft for moving individuals and objects through the water. A two-stroke-cycle internal combustion engine is provided with a diaphragm carburetor with an integral fuel pump which permits the craft to operate reliably in any position... | 07/10/1979 |
| 4139580 | Self-lift carburetor A small carburetor for chain saws and the like which needs no fuel pump. A spring-biased diaphragm has a radically higher bias than is normal and controls a fuel inlet valve open to the tank such that a higher vacuum is needed to open the valve, thus prov... | 02/13/1979 |
| 4129620 | Fuel changeover system for multi-fuel engines Fuel changeover system for a multi-fuel engine of the type which may be driven by various fuels such as gasoline and kerosene, which enables the engine to continue the operation by another fuel when one of the fuels has run out. The system comprises two f... | 12/12/1978 |
| 4117812 | Auxiliary fuel feed and timing control system for internal combustion engines An auxiliary fuel system for an internal combustion engine which supplements the primary fuel means for delivering fuel through a carburetor passage to said engine. The auxiliary fuel system is comprised of first and second fuel valves placed in parallel ... | 10/03/1978 |
| 4053544 | Fuel induction system for internal combustion engines A system for supplying fuel to an internal combustion engine for optimum efficiency in engine operation and fuel economy and for minimum objectionable exhaust emissions. The system pertains particularly to an internal combustion engine in an automobile, t... | 10/11/1977 |
| 4046121 | Fuel supply devices for internal combustion engines A fuel supply device for internal combustion engines has an injector formed with an injection orifice whose cross-sectional area is adjusted responsive to the position of an auxiliary throttle element located in the intake pipe of the engine and opening a... | 09/06/1977 |
| 4040403 | Air-fuel mixture control system Method and means are provided for effecting the controlled vaporization of a liquid fuel to simplify the ability to control a specific air-fuel ratio for an internal combustion engine. The invention contemplates two basic operations: first, a vaporized fu... | 08/09/1977 |
| 4025589 | Metering rod support for carburetor A metering rod support for a carburetor for an internal combustion engine in which a vertical extending metering rod is positioned in a metering jet to control the flow of fuel to the fuel nozzle discharging in the air and fuel mixture conduit. An integra... | 05/24/1977 |
| 4020810 | Economizer valve for use with gas-powered internal combustion engines An economizer valve for use with an induction and fuel supply system for an internal combustion engine operated on gaseous fuels, for example, LPG or natural gas. The system is used with a conventional mixing valve which supplies air according to engine d... | 05/03/1977 |
