Vortex gasket for automative exhaust system
US5411274A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 13, 1993 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | May 13, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/91
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A vortex gasket for automotive exhaust system, preferably used with a special flange having a conical seal surface, is formed by spirally overlaying a metal hoop (2) of flat strip, and an inorganic filler (3) of tape form, and annularly spot welding a winding start portion (2a) and a winding end portion (2b) of the hoop (2) to itself. The tape form of the inorganic filler is wider than the flat strip of the metal hoop so that edges of the inorganic filler form seal contact surfaces spaced beyond edges of the metal hoop. When an external force is applied in the axial direction, slipping occurs between the hoop (2) and the filler (3), and the gasket is telescopically deformed in the axial direction, so that the seal contact surfaces 1a, 1b, at sides of the gasket, are formed in a conical shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.