Braiding yarn made of expanded graphite
US6644007B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jan 4, 2022 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2505/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a braiding yarn made of expanded graphite for a gland packing which is to be used in a shaft seal part of a fluid apparatus or the like. In the braiding yarn made of expanded graphite of the invention, an expanded graphite tape of a predetermined width is folded into a valley fold in the longitudinal direction, both end portions in the width direction of the expanded graphite tape are bent so as to be directed toward the inner side of the width direction of the expanded graphite tape, and the outer periphery of the tape is covered by a reinforcing member configured by a braided body of stainless steel wires. The expanded graphite tape may be twisted. Reinforcing fibers may be embedded in the expanded graphite tape. Part of expanded graphite particles on the side of the surface of the expanded graphite tape may be removed away. According to the expanded graphite tape of the invention, flaking of expanded graphite particles during a braiding process is reduced or prevented from occurring, and the pressure resistance of a gland packing can be enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.