Gasket manufacture
US5570501A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Dec 7, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1039
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An embossed sheet coated at least partially with expanded graphite and suitable for use as a gasket or as a component layer of a gasket is manufactured by positioning a planar metallic sheet between an upper embossing die and a lower embossing die with a layer of particles of expanded graphite between one of said dies and a surface of the sheet. One of the dies has a protuberance to emboss a ridge into the sheet while the other die has a recess to receive the ridge. The method also comprises pressing the dies together to cause the particles to coalesce and form a coating attached to the sheet while simultaneously embossing said ridge into the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.