Sealing gasket for ductile iron pipe and method of manufacture
US12085199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2021 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | Aug 20, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/14459
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing gasket is shown which is used to seal the belled end opening of a female ductile iron pipe to a mating male pipe having an interior surface and an exterior surface. The sealing gasket has an annular gasket body made of a resilient elastomeric material which is bonded to a hard plastic reinforcing band. The annular gasket body is installed within a raceway provided in the mouth region of the female ductile iron pipe so that an outer circumferential region forms a seal with the female pipe mouth region and an inner circumferential region forms a sealing surface for the exterior surface of the mating male pipe. The reinforcing band has a circumferential body which is made of a synthetic polymer which has a greater hardness than the elastomeric material of the remainder of the gasket body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.