Absorbent retainer for absorbent type muffler
Patent 4580656 Issued on April 8, 1986. Estimated Expiration Date: 
November 2, 2004. 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.
November 2, 2004. 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 3166382 Catalytic muffler Muffler Sound attenuator Patent #: 4421202 InventorAssigneeApplicationNo. 06/667720 filed on 11/02/1984US Classes:181/252, With sound absorbing material181/256, With sound absorbing material181/265, Retroverted181/272Plural chambersExaminersPrimary: Fuller, Benjamin R.Attorney, Agent or FirmInternational ClassesF01N 1/02 (20060101)F01N 1/04 (20060101) F01N 1/24 (20060101) F01N 1/00 (20060101) Foreign Application Priority Data1984-04-06 JPAbstractA muffler connected to an exhaust system of an automotive or like internal combustion engine for damping noise, which accompanies engine exhaust, using a sound absorbing member. An intertwined meshwork in a tubular configuration serves as means for covering and firmly retaining the sound absorbing member, which is wound around a perforated pipe, on the outer periphery of the perforated pipe. The tubular meshwork is produced by intertwining in a desired density strings each of which is made up of a number of strands.Field of SearchWith solid particle separator (e.g., spark arrestor, vacuum cleaner, etc.)Corrosion prevention Expansion chamber Continuous conduit Pervious material interposed in flow path And multi-passage With expansion chamber And multi-passage Valve controlled With muffler bypass With sound absorbing material And side branch With sound absorbing material With baffle or baffle structure Retroverted Multi-passage Plural chambers And multi-passage | |
