Stuffing box packing assembly
US6182974A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Sep 14, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/26
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Compact stuffing box packing assemblies of the present application include high density metal inserted braided end rings of graphite which have each been die formed to have angled facing surfaces and a plurality of center Preform rings is disclosed In one embodiment, three low density graphite Preform rings having angled facing surfaces are contained between the high density braided end rings. The facing surfaces of the Preform rings extend at a different angle relative to the longitudinal axis of the packing assembly than do the facing surfaces of the braided end rings. The braided end rings provide a support function for the Preform rings as well as a stem wiping function. In another embodiment, additional Preform support rings made of the same material as the end rings are positioned between the low density Preform rings. A further embodiment disclosed includes replacing two of the three low density graphite Preform rings having angled facing surfaces with Preform support rings made of high density metal inserted braided end rings of graphite which have each been die formed to have angled facing surfaces. A still further embodiment includes having the end rings and the center ri…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.