Fuel-air control device
Patent 4483309 Issued on November 20, 1984. Estimated Expiration Date: 
May 18, 2003. 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 18, 2003. 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 1089998 1398406 1954198 2154593 3166061 3176670 3809035 Detoxication device for exhaust gases of internal-combustion engines Device for improved efficiency in internal combustion Fuel-air control device Patent #: 4305369 InventorsApplicationNo. 06/495737 filed on 05/18/1983US Classes:123/574, Specific control valve (e.g., PCV valve)123/572, Crankcase vapor used with combustible mixture123/573, Vapor treated before mixing with combustible mixture (e.g., cooling)123/586Oxidant controlled by throttleExaminersPrimary: Lazarus, Ronald H.International ClassesF02M 23/03 (20060101)F02M 25/06 (20060101) F02M 23/00 (20060101) AbstractA device for aiding in the control of the fuel-air mixture in an internal combustion engine having an accelerator linked mechanically to a carburetor and a ventilation passage from the crankcase of said engine to the intake manifold, said device comprising a valve housing having a seat coupled to an air passage adapted to communicate between outside ambient air and the ventilation passage; a valve means for seating in the seat in the valve housing to prevent ambient air from flowing into the air passage, and a rotatable valve control cam means coupled to the accelerator to gradually open and close the valve as the accelerator is depressed. This device is used to increase the air in the fuel mixture so as to provide a more complete combustion. | |
