Low creep polytetrafluoroethylene gasketing element
US6089576A · kind A · utility
6Cited by
30References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1996 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Jun 17, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/946
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is an improved gasket for use in a wide variety of sealing applications. The gasket comprises a sheet of expanded polytetrafluoroethylene (PTFE) that is helically wrapped around itself and sealed in that orientation. This construction produces a gasket that has significant tensile strength in both its longitudinal and transverse axes. As such, the gasket of the present invention retains all of the operational advantages of PTFE while being quite resistant to creep.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.