End cone assembly and method for catalytic converter
US6010668A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1998 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Feb 17, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N13/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An end cone assembly for a catalytic converter includes a larger formed sheet metal outer cone and a smaller formed sheet metal inner cone forming a dual wall cone assembly. The cones have large ends and connecting conical walls which are configured like those of a prior art end cone and are formable by the same tooling. The cones have inner ends connected with the conical walls that are modified to connect with smaller diameter exhaust pipes and require modified tooling to make. The prior art cones have cylindrical small ends that are telescoped together and locked by dimples. The small end of the new inner cone varies from the conical configuration of its respective wall in, first, curving outward toward an axial direction, second, curving inward toward a radial direction and, third, curving outward to an essentially axial direction defining a generally cylindrical outer end. The small end of the new outer cone varies from the conical configuration of its respective wall in, first, curving outward toward an axial direction and, second, curving inward to an essentially radial direction and terminating in an opening closely surrounding the cylindrical outer end of said inner cone t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.