Sealing apparatus
US5590887A · kind A · utility
9Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1993 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | Dec 21, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/944
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing apparatus, which provides a seal between a metal surface and a member sliding along the metal surface is made of rubber material which contains a rubber polymer having alkyl lateral chains. At least a part of alkyl group hydrogen of rubber polymer in cortex is substituted from fluorine by plasma treatment. The plasma treatment reduces the noise which is normally present in device as of this type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.