Gland packing and gland packing manufacturing method
US10408350B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2016 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Mar 18, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K41/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
To provide a gland packing capable of suppressing a fluid from permeating into a packing body or leaking from the packing body through a contact surface between a laminating member and a protrusion of the packing body. The gland packing includes an annular packing body (21) which is formed by winding an expanded graphite tape material in a spiral shape and a laminating member (22) that is bonded to an axial end surface of the packing body (21) and is formed of an annular expanded graphite sheet material, the axial end surface of the packing body (21) being provided with a protrusion (24) facing and contacting an inner peripheral portion or an outer peripheral portion of the laminating member (22) in the radial direction, in which a contact surface (27) between the protrusion (24) and the laminating member (22) is formed so that a radius changes in at least a part in the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.