Device for introducing additional air into intake passage leading to combustion chamber
Patent 4235209 Issued on November 25, 1980. Estimated Expiration Date: 
June 2, 1998. 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.
June 2, 1998. 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 2326598 3659575 3799301 3834367 Device for improved efficiency in internal combustion Apparatus for the predetermined addition of secondary air for the optimum combustion of exhaust gases of internal combustion engines Gas saving device 4089312 Gas saver Auxiliary air inlet device for internal combustion engines Patent #: 4137875 InventorApplicationNo. 05/911941 filed on 06/02/1978US Classes:123/585, Auxiliary air or oxygen added to combustible mixture123/586Oxidant controlled by throttleExaminersPrimary: Burns, Wendell E.Attorney, Agent or FirmInternational ClassesF02M 25/07 (20060101)F02M 23/08 (20060101) F02M 23/00 (20060101) AbstractIn a device for introducing additional air into an air-fuel mixture flowing through an intake passage to combustion chambers of an internal combustion engine, means is provided for maintaining the pressure of the additional air or gas introduced into the intake passage from the periphery thereof to more than twice as high as the internal pressure in the intake passage. | |
