Gland packing and sealing apparatus comprising it
US7011312B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2002 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Sep 24, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K41/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
To provide a novel gland packing and a sealing apparatus comprising this, wherein the gland packing displays high and stable sealability for a stem and an inner wall surface of a stuffing box even for uses further requesting the movability (rotation and reciprocating movement), and further, gives excellent effects, such as decrease of moving resistance of a stem, shape stability, adaptability to a corroded and worn-out stem and stuffing box, function for receiving shafts, easiness of equipment, simplification of sealing structure, and compactness of a sealing apparatus. The gland packing, according to the present invention, is a ring packing of which the cross sectional shape is a quadrilateral, wherein both two edges at inner and outer diameter sides of the quadrilateral are parallel to a central axis of the gland packing, and wherein the other two edges have slopes of the same orientation as to an axis perpendicular to the central axis, with the gland packing being characterized in that an inner-diameter-side acute angle portion and an outer-diameter-side acute angle portion of the quadrilateral are made flat portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.