Chambered-core motorcycle-exhaust apparatus
Patent 4356885 Issued on November 2, 1982. Estimated Expiration Date: 
August 20, 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.
August 20, 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 3104733 3858678 InventorApplicationNo. 06/294441 filed on 08/20/1981US Classes:181/227, Pipe-muffler (e.g., tail pipe type)181/240, Manifold type181/249With expansion chamberExaminersPrimary: Fuller, Benjamin R.Attorney, Agent or FirmInternational ClassesF01N 7/18 (20060101)F01N 1/08 (20060101) F01N 7/14 (20060101) F01N 7/08 (20060101) AbstractA chambered-core motorcycle-exhaust apparatus having an inner exhaust core system comprising a plurality of interconnected pipe segments, including a muffler-end segment, wherein the inner core is mounted within a tubular housing having a substantially larger diameter than the inner core, so as to establish an annular chamber between the outer housing and the inner exhaust core, to prevent substantial heat transfer to the outer housing and to reduce noise output normally associated with motorcycle exhaust systems. | |
