Braided high-temperature packing comprising a core of folded flexible graphite sheet
US5225262A · kind A · utility
46Cited by
29References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1991 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Apr 29, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A high temperature, high pressure resistant packing (e.g., for the packing gland of a valve stem) has a core of density 1.3-1.6 gm/cc that includes a plurality of strands, each strand including a flexible graphite tape, longitudinally corrugated and folded into at least two longitudinally extending partially superimposed layers. Preferable, each strand is overknitted with a reinforcing wire, the strands in the core are braided, and a jacket, which includes a carbide fiber, an inorganic fiber, and a phenolic fiber, is disposed about the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.