Sealing ring for sealing a pipe joint
US5064207A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1990 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Dec 14, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/924
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sealing ring for sealing in a pipe joint an annular space between a socket end and a spigot end introduced therein comprises an annular sealing portion (8) consisting of elastically yielding sealing material and a substantially annular reinforcing portion (10) consisting of a material which is rigid in relation to the elastically yieldable material, the sealing portion (8) and the reinforcing portion (10) being fixedly connected with each other at the connection surface (18). The outer surface (40) of the sealing ring has a surface portion which is of a shape corresponding to the shape of the connection portion as parallelly displaced in the axial direction of the ring. The invention also relates to a mould for manufacturing such a sealing ring by means of injection moulding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.