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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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US Patent 5313926 - Supplemental emission control device for a gasoline engine
US Patent Issued on May 24, 1994
Estimated Patent Expiration Date:
May 7, 2013Estimated 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.
Estimated Patent Expiration Date:
May 7, 2013Estimated 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.AbstractA 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. | InventorApplicationNo. 057815 filed on 05/07/1993US Classes:123/587Oxidant controlled by intake manifold vacuumField of Search123/572, Crankcase vapor used with combustible mixture123/573, Vapor treated before mixing with combustible mixture (e.g., cooling)123/574, Specific control valve (e.g., PCV valve)123/587Oxidant controlled by intake manifold vacuumExaminersPrimary: Kamen, Noah P.Attorney, Agent or FirmUS Patent References2876757, 3463132, 4112892, Combustion control system for adding fluid above the butterfly valveIssued on: 09/12/1978 Inventor: Lindberg4370971, Apparatus for removing contaminants from crankcase emissions Issued on: 02/01/1983 Inventor: Bush4483309Fuel-air control device Issued on: 11/20/1984 Inventor: Norman , et al. International ClassF02M 023/00 |
