Method of producing a catalytic converter
US6591498B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2002 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Mar 22, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49925
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention is directed to a method of producing a catalytic converter which comprises the steps of providing a shock absorbent member around an outer periphery of a catalyst substrate, inserting the catalyst substrate and the shock absorbent member into a cylindrical workpiece, fixing the cylindrical workpiece to prevent the cylindrical workpiece from being rotated about a longitudinal axis thereof, reducing a diameter of a body portion of the cylindrical workpiece covering at least a portion of the shock absorbent member to hold the catalyst substrate in the cylindrical workpiece, spinning at least an end portion of the cylindrical workpiece, by means of a plurality of spinning rollers, which are evenly positioned around the outer periphery of the end portion, and which are revolved about the axis of the end portion along a common circular locus, and moved in a radial direction of the end portion, and moving the plurality of spinning rollers in an axial direction of the end portion to reduce a diameter of the end portion along the axis thereof, and thereby form a neck portion of the cylindrical workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.