Carburetor air injection system
Patent 4373500 Issued on February 15, 1983. Estimated Expiration Date: 
September 25, 2001. 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.
September 25, 2001. 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 1118865 2078481 2518082 3156226 3494341 3564580 3834367 Modification for internal combustion engine providing improved fuel economy Modulating air control valve Patent #: 4160433 InventorApplicationNo. 06/305791 filed on 09/25/1981US Classes:123/587, Oxidant controlled by intake manifold vacuum48/189.3Auxilary air inletExaminersPrimary: Cuchlinski, William A. Jr.International ClassesF02M 23/08 (20060101)F02M 23/00 (20060101) AbstractA carburetor air injection system comprising a downdraft carburetor which includes a butterfly type automatic choke valve, a butterfly type throttle valve spaced from said automatic choke valve, an idler jet in the carburetor on the opposite side of the throttle valve from the automatic choke valve, and a fuel jet between the automatic choke valve and the throttle valve. An air injector plate is positioned between the carburetor and the intake manifold. The air injection plate includes capillary air orifices feeding constantly controlled quantities of air into the air-fuel mixture passing from the carburetor to the intake manifold during operation of the engine. A flexible tubing having an air filter removably associated therewith is connected to the air injector plate. | |
