Patents by Inventor Eric G. Zbytowski
Eric G. Zbytowski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240100549Abstract: A mixing system for a power washer includes an electrically actuated valve communicated with a supply of a working fluid, and having a valve head that is movable between open and closed positions to control the flow rate of the working fluid through an outlet of the valve. The outlet of the valve is communicated with a fluid passage of the power washer to enable flow of the working fluid into a primary fluid and discharge of a mixture of the primary fluid and working fluid from the power washer when the valve is open, and to provide a flow of primary fluid from the power washer when the valve is closed.Type: ApplicationFiled: September 27, 2023Publication date: March 28, 2024Inventors: Bradley J. Roche, Eric G. Zbytowski, Cyrus M. Healy, Benjermen L. Hill, Elizabeth M. VanSipe
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Patent number: 11927164Abstract: A throttle body assembly for a combustion engine includes a throttle body having a pressure chamber including a supply of liquid fuel, and a throttle bore with an inlet through which air is received. A throttle valve is carried by the throttle body with a valve head movable relative to the throttle bore. A metering valve is coupled to the throttle body, and has a valve element that is movable between open and closed positions. A boost venturi is located in the throttle bore and has an inner passage that is open at both ends to the throttle bore. The boost venturi has an opening through which fuel flows into the inner passage when the valve element is in the open position, wherein fuel flows from the pressure chamber to the metering valve under the force of gravity or under a pressure of less than 6 psi.Type: GrantFiled: November 17, 2022Date of Patent: March 12, 2024Assignee: Walbro LLCInventors: Gary J. Burns, Andreas D. M. Dixon, Eric G. Zbytowski, Albert L Sayers, Justin T. Dolane, David L Speirs, William E. Galka, Duried F. Rabban, Bradley J. Roche
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Publication number: 20230087858Abstract: A throttle body assembly for a combustion engine includes a throttle body having a pressure chamber including a supply of liquid fuel, and a throttle bore with an inlet through which air is received. A throttle valve is carried by the throttle body with a valve head movable relative to the throttle bore. A metering valve is coupled to the throttle body, and has a valve element that is movable between open and closed positions. A boost venturi is located in the throttle bore and has an inner passage that is open at both ends to the throttle bore. The boost venturi has an opening through which fuel flows into the inner passage when the valve element is in the open position, wherein fuel flows from the pressure chamber to the metering valve under the force of gravity or under a pressure of less than 6 psi.Type: ApplicationFiled: November 17, 2022Publication date: March 23, 2023Inventors: Gary J. Burns, Andreas D. M. Dixon, Eric G. Zbytowski, Albert L. Sayers, Justin T. Dolane, David L. Speirs, William E. Galka, Duried F. Rabban, Bradley J. Roche
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Patent number: 11536235Abstract: A throttle body assembly for a combustion engine includes a throttle body having a pressure chamber including a supply of liquid fuel, and a throttle bore with an inlet through which air is received. A throttle valve is carried by the throttle body with a valve head movable relative to the throttle bore. A metering valve is coupled to the throttle body, and has a valve element that is movable between open and closed positions. A boost venturi is located in the throttle bore and has an inner passage that is open at both ends to the throttle bore. The boost venturi has an opening through which fuel flows into the inner passage when the valve element is in the open position, wherein fuel flows from the pressure chamber to the metering valve under the force of gravity or under a pressure of less than 6 psi.Type: GrantFiled: June 23, 2021Date of Patent: December 27, 2022Assignee: Walbro LLCInventors: Gary J. Burns, Andreas D. M. Dixon, Eric G. Zbytowski, Albert L. Sayers, Justin T. Dolane, David L. Speirs, William E. Galka, Duried F. Rabban, Bradley J. Roche
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Publication number: 20210317809Abstract: A throttle body assembly for a combustion engine includes a throttle body having a pressure chamber including a supply of liquid fuel, and a throttle bore with an inlet through which air is received. A throttle valve is carried by the throttle body with a valve head movable relative to the throttle bore. A metering valve is coupled to the throttle body, and has a valve element that is movable between open and closed positions. A boost venturi is located in the throttle bore and has an inner passage that is open at both ends to the throttle bore. The boost venturi has an opening through which fuel flows into the inner passage when the valve element is in the open position, wherein fuel flows from the pressure chamber to the metering valve under the force of gravity or under a pressure of less than 6 psi.Type: ApplicationFiled: June 23, 2021Publication date: October 14, 2021Inventors: Gary J. Burns, Andreas D. M. Dixon, Eric G. Zbytowski, Albert L. Sayers, Justin T. Dolane, David L. Speirs, William E. Galka, Duried F. Rabban, Bradley J. Roche
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Patent number: 11073122Abstract: In at least some implementations, a throttle body assembly for a combustion engine includes a throttle body having a pressure chamber in which a supply of fuel is received and a throttle bore with an inlet through which air is received, a throttle valve carried by the throttle body with a valve head movable relative to the throttle bore to control fluid flow through the throttle bore, and a metering valve carried by the throttle body. The metering valve may have a valve element that is movable between an open position wherein fuel may flow from the pressure chamber into the throttle bore and a closed position where fuel is prevented or substantially prevented from flowing into the throttle bore through the metering valve.Type: GrantFiled: April 21, 2017Date of Patent: July 27, 2021Assignee: Walbro LLCInventors: Gary J. Burns, Andreas D. M. Dixon, Eric G. Zbytowski, Albert L. Sayers, Justin T. Dolane, David L. Speirs, William E. Galka, Duried F. Rabban, Bradley J. Roche
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Patent number: 11008951Abstract: In at least some implementations, a throttle body assembly includes a body that has multiple throttle bores, multiple throttle valve heads received one in each of the throttle bores, at least one throttle valve shaft to which the throttle valve heads are coupled, and at least one of a fuel metering valve and a vapor separator carried by the body.Type: GrantFiled: October 2, 2018Date of Patent: May 18, 2021Assignee: Walbro LLCInventors: Gary J. Burns, William E. Galka, Bradley J. Roche, Albert L. Sayers, David L. Speirs, Eric G. Zbytowski
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Publication number: 20200248635Abstract: In at least some implementations, a throttle body assembly includes a body that has multiple throttle bores, multiple throttle valve heads received one in each of the throttle bores, at least one throttle valve shaft to which the throttle valve heads are coupled, and at least one of a fuel metering valve and a vapor separator carried by the body.Type: ApplicationFiled: October 2, 2018Publication date: August 6, 2020Inventors: Gary J. Burns, William E. Galka, Bradley J. Roche, Albert L. Sayers, David L. Speirs, Eric G. Zbytowski
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Publication number: 20190120193Abstract: In at least some implementations, a throttle body assembly for a combustion engine includes a throttle body having a pressure chamber in which a supply of fuel is received and a throttle bore with an inlet through which air is received, a throttle valve carried by the throttle body with a valve head movable relative to the throttle bore to control fluid flow through the throttle bore, and a metering valve carried by the throttle body. The metering valve may have a valve element that is movable between an open position wherein fuel may flow from the pressure chamber into the throttle bore and a closed position where fuel is prevented or substantially prevented from flowing into the throttle bore through the metering valve.Type: ApplicationFiled: April 21, 2017Publication date: April 25, 2019Applicant: Walbro LLCInventors: Gary J. Burns, Andreas D. M. Dixon, Eric G. Zbytowski, Albert L. Sayers, Justin T. Dolane, David L. Speirs, William E. Galka, Duried F. Rabban, Bradley J. Roche
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Patent number: 10125696Abstract: In at least some implementations, a charge forming device includes a main body, a throttle valve and an adjuster. The main body includes a main bore through which fluid flows for delivery to an engine. The throttle valve is carried by the main body and moveable relative to the main bore to control fluid flow through the main bore. And the adjuster is moveable relative to the throttle valve and engageable with the throttle valve to adjust the range of motion of the throttle valve. In at least some implementations, the adjuster limits the range of motion of the throttle valve when the adjuster is engaged with the throttle valve.Type: GrantFiled: April 14, 2016Date of Patent: November 13, 2018Assignee: Walbro LLCInventors: Bryan K. Gangler, Bradley J. Roche, Dairoku Suzuki, David L. Speirs, Eric G. Zbytowski
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Patent number: 9765724Abstract: An engine system may include a fuel and air supply circuit and an exhaust circuit, a temperature sensor mounted on an exterior of the engine and an oxygen sensor located in the exhaust circuit. The fuel and air supply circuit may include a throttle body mounted on the engine and having a throttle valve to control the flow rate of air delivered to the engine, a fuel injector carried by the throttle body to deliver fuel to the engine and a fuel rail carried by at least one of the throttle body and the fuel injector and having an input to receive a supply of fuel and an outlet through which fuel is routed to the fuel injector. An engine control unit may be communicated with these components to control the fuel and air mixture provided to the engine as a function of the temperature and oxygen sensor outputs.Type: GrantFiled: May 11, 2016Date of Patent: September 19, 2017Assignee: Walbro LLCInventors: Massimo Casoni, William E. Galka, Bradley J. Roche, David L. Speirs, Mark S. Swanson, Eric G. Zbytowski
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Publication number: 20160305348Abstract: In at least some implementations, a charge forming device includes a main body, a throttle valve and an adjuster. The main body includes a main bore through which fluid flows for delivery to an engine. The throttle valve is carried by the main body and moveable relative to the main bore to control fluid flow through the main bore. And the adjuster is moveable relative to the throttle valve and engageable with the throttle valve to adjust the range of motion of the throttle valve. In at least some implementations, the adjuster limits the range of motion of the throttle valve when the adjuster is engaged with the throttle valve.Type: ApplicationFiled: April 14, 2016Publication date: October 20, 2016Inventors: Bryan K. Gangler, Bradley J. Roche, Dairoku Suzuki, David L. Speirs, Eric G. Zbytowski
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Publication number: 20160252039Abstract: An engine system may include a fuel and air supply circuit and an exhaust circuit, a temperature sensor mounted on an exterior of the engine and an oxygen sensor located in the exhaust circuit. The fuel and air supply circuit may include a throttle body mounted on the engine and having a throttle valve to control the flow rate of air delivered to the engine, a fuel injector carried by the throttle body to deliver fuel to the engine and a fuel rail carried by at least one of the throttle body and the fuel injector and having an input to receive a supply of fuel and an outlet through which fuel is routed to the fuel injector. An engine control unit may be communicated with these components to control the fuel and air mixture provided to the engine as a function of the temperature and oxygen sensor outputs.Type: ApplicationFiled: May 11, 2016Publication date: September 1, 2016Inventors: Massimo Casoni, William E. Galka, Bradley J. Roche, David L. Speirs, Mark S. Swanson, Eric G. Zbytowski
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Patent number: 9371786Abstract: An engine system may include a fuel and air supply circuit and an exhaust circuit, a temperature sensor mounted on an exterior of the engine and an oxygen sensor located in the exhaust circuit. The fuel and air supply circuit may include a throttle body mounted on the engine and having a throttle valve to control the flow rate of air delivered to the engine, a fuel injector carried by the throttle body to deliver fuel to the engine and a fuel rail carried by at least one of the throttle body and the fuel injector and having an input to receive a supply of fuel and an outlet through which fuel is routed to the fuel injector. An engine control unit may be communicated with these components to control the fuel and air mixture provided to the engine as a function of the temperature and oxygen sensor outputs.Type: GrantFiled: August 21, 2012Date of Patent: June 21, 2016Assignee: WALBRO LLCInventors: Massimo Casoni, William E. Galka, Bradley J. Roche, David L. Speirs, Mark S. Swanson, Eric G. Zbytowski
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Patent number: 8933691Abstract: A rotary position sensor for determining the rotary position of a rotary component may include a sensor and a magnet. The sensor may be responsive to a characteristic of a magnetic field that changes as the magnetic field moves. The magnet may be carried by the rotary component for rotation with the rotary component and have an anti-rotation feature to prevent rotation of the magnet relative to the rotary component to maintain a desired rotary position of the magnet.Type: GrantFiled: April 30, 2010Date of Patent: January 13, 2015Assignee: Walbro Engine Management, L.L.C.Inventors: William E. Galka, Bradley J. Roche, David L. Speirs, Eric G. Zbytowski
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Publication number: 20130054121Abstract: An engine system may include a fuel and air supply circuit and an exhaust circuit, a temperature sensor mounted on an exterior of the engine and an oxygen sensor located in the exhaust circuit. The fuel and air supply circuit may include a throttle body mounted on the engine and having a throttle valve to control the flow rate of air delivered to the engine, a fuel injector carried by the throttle body to deliver fuel to the engine and a fuel rail carried by at least one of the throttle body and the fuel injector and having an input to receive a supply of fuel and an outlet through which fuel is routed to the fuel injector. An engine control unit may be communicated with these components to control the fuel and air mixture provided to the engine as a function of the temperature and oxygen sensor outputs.Type: ApplicationFiled: August 21, 2012Publication date: February 28, 2013Applicant: WALBRO ENGINE MANAGEMENT, L.L.C.Inventors: Massimo Casoni, William E. Galka, Bradley J. Roche, David L. Speirs, Mark S. Swanson, Eric G. Zbytowski
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Patent number: 8286614Abstract: An adjustment limiting device for a carburetor including a fuel adjustment valve rotatable to adjust a supply of fuel in or delivered from the carburetor includes an adjustment limiting cap and a connector. The adjustment limiting cap is adapted to be disposed over a portion of the fuel adjustment valve and includes a rotary connection feature adapted to limit relative rotational movement between the adjustment limiting cap and the fuel adjustment valve, and a rotation limiter to limit rotational movement of the adjustment limiting cap. The connector may be carried by the adjustment limiting cap to maintain the adjustment limiting cap on the fuel adjustment valve. The connector may be concealed by the carburetor body, permit the adjustment limiting cap to be fitted onto the fuel adjustment valve, and prevent the adjustment limiting cap from being removed from the fuel adjustment limiting valve.Type: GrantFiled: December 6, 2008Date of Patent: October 16, 2012Assignee: Walbro Engine Management, L.L.C.Inventor: Eric G Zbytowski
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Publication number: 20100219817Abstract: A rotary position sensor for determining the rotary position of a rotary component may include a sensor and a magnet. The sensor may be responsive to a characteristic of a magnetic field that changes as the magnetic field moves. The magnet may be carried by the rotary component for rotation with the rotary component and have an anti-rotation feature to prevent rotation of the magnet relative to the rotary component to maintain a desired rotary position of the magnet.Type: ApplicationFiled: April 30, 2010Publication date: September 2, 2010Applicant: WALBRO ENGINE MANAGEMENT, L.L.C.Inventors: William E. Galka, Bradley J. Roche, David L. Speirs, Eric G. Zbytowski
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Patent number: 7717403Abstract: According to one implementation, a carburetor includes an intake bore, a throttle valve, a main fuel nozzle, an accelerator device and a fuel passage. The throttle valve is movable between an idle and wide open positions and includes a shaft rotatably supported around an axial line extending across the intake bore. The accelerator device may be operable to increase an amount of fuel that flows through the main fuel nozzle when the throttle valve is moved toward its wide open position, and may include a fuel reservoir constructed and arranged to store fuel. The fuel passage communicates with the main fuel nozzle and the fuel reservoir is provided upstream of the main fuel nozzle such that fuel flows through the fuel reservoir before being delivered to the main fuel nozzle.Type: GrantFiled: February 25, 2008Date of Patent: May 18, 2010Assignee: Walbro Engine Management, L.L.C.Inventor: Eric G. Zbytowski
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Publication number: 20090145408Abstract: An adjustment limiting device for a carburetor including a fuel adjustment valve rotatable to adjust a supply of fuel in or delivered from the carburetor includes an adjustment limiting cap and a connector. The adjustment limiting cap is adapted to be disposed over a portion of the fuel adjustment valve and includes a rotary connection feature adapted to limit relative rotational movement between the adjustment limiting cap and the fuel adjustment valve, and a rotation limiter to limit rotational movement of the adjustment limiting cap. The connector may be carried by the adjustment limiting cap to maintain the adjustment limiting cap on the fuel adjustment valve. The connector may be concealed by the carburetor body, permit the adjustment limiting cap to be fitted onto the fuel adjustment valve, and prevent the adjustment limiting cap from being removed from the fuel adjustment limiting valve.Type: ApplicationFiled: December 6, 2008Publication date: June 11, 2009Applicant: WALBRO ENGINE MANAGEMENT L.L.C.Inventor: Eric G. Zbytowski