Supplemental emission control device for a gasoline engine
Patent 5313926 Issued on May 24, 1994. Estimated Expiration Date: 
May 7, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 7, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2876757 3463132 Combustion control system for adding fluid above the butterfly valve Apparatus for removing contaminants from crankcase emissions Fuel-air control device Patent #: 4483309 InventorApplicationNo. 057815 filed on 05/07/1993US Classes:123/587Oxidant controlled by intake manifold vacuumExaminersPrimary: Kamen, Noah P.Attorney, Agent or FirmInternational ClassF02M 023/00AbstractA supplemental emission control device for a gasoline engine utilizes the vacuum suction of the venturi of the carburetor or the air intake manifold to draw ambient air through a filter sponge and a piston control chamber into the combustion chamber of a gasoline engine to mix with the fuel therein to form a uniform fuel mixture for a complete and efficient combustion. A regulating screw is provided to regulate the flow rate of the ambient air into the combustion chamber. | |
