Mechanical seal
US4175753A · kind A · utility
8Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1978 |
| Grant date | Nov 27, 1979 |
| Priority date | — |
| Expiry date | Jun 1, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/935
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In mechanical seals adapted to perform in high temperature environments, fragile gaskets characterized by poor elasticity and conformability are used to perfect a seal between adjacent parts. Gaskets may be made of graphite, carbon, asbestos and/or fiberglass containing material. In order to perfect such a seal, gaskets with a parallelogram cross-section are used. They are expanded radially and their cross-section changed when placed between two parts during assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.