Double walled exhaust pipe for an engine
US5579639A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Jul 25, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2470/24
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The double walled exhaust pipe of the present invention consists of an outer pipe which forms an outer wall of the exhaust pipe and an inner pipe which forms an inner wall of the exhaust pipe, the outer pipe and the inner pipe are fixed each other at an exhaust inlet portion which provides a reference point of the thermal expansion of the inner pipe and the outer pipe. The double walled exhaust pipe of the present invention has at least one bent portion. Further, the inner pipe of the double walled exhaust pipe is divided into longitudinal pipe sections, and at least one sliding connection, which connects the sections of the inner pipe permitting the relative longitudinal slide movements of the pipe sections, is provided between the exhaust inlet portion and the bent portion having the largest bending angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.