Mixture control unit system for soil venting apparatus
Patent 5070850 Issued on December 10, 1991. Estimated Expiration Date: 
April 20, 2010. 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.
April 20, 2010. 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 3645244 Multiple fuel supply system for an internal combustion engine 3,7-Inter-phenylene-9-deoxy-PGF-compound Air-fuel ratio controller Apparatus and method for removing and burning hydrocarbon vapors using an internal combustion engine Patent #: 4846134 InventorsAssigneeApplicationNo. 512305 filed on 04/20/1990US Classes:123/527, Gaseous fuel and air mixer123/575, Diverse fuel supply123/698With addition of secondary fluid (e.g., fuel or exhaust gas)ExaminersPrimary: Cross, E. RollinsAttorney, Agent or FirmInternational ClassF02B 043/00AbstractThe invention provides a mixture control system for controlling the flow of vaporized hydrocarbons drawn into an engine for combustion and combining a supplemental fuel with the vaporized hydrocarbons as required to maintain a near stoichiometric mixture. | |
