Construction of elliptical metal substrates
US4221843A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1978 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Jun 26, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24248
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A generally elliptical cylindrical metal substrate, and a method of construction thereof. A plate mandrel having a generally rectangular cross section is provided, and a first end of a web of metal substrate material is affixed to the plate mandrel. The metal substrate material preferably comprises alternate layers of planar metal foil and corrugated metal foil. As an alternative, a corrugated metal foil may be substituted for the planar foil. The metal substrate material web is wrapped around the mandrel, as by rotation of the mandrel while the web is fed off of a spool, until a substantially uniform thickness of metal substrate surrounding the mandrel is provided, a generally elliptical cylinder being formed. A second end of the web is affixed to a previous wrapping, thus forming a complete elliptical cylindrical metal substrate. The metal substrate is preferably catalyzed and used as a catalytic muffler or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.