Segmented grip ring for plastic pipe joint restraint systems
US12270495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Nov 10, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L37/091
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A mechanism for restraining pipe against both internal and external forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline featuring an improved restraint mechanism. The restraint mechanism includes a circumferential casing and a companion grip ring, both of which are received within a mating groove provided in the belled end of a female pipe. The grip ring is made up of a series of arc-shaped gripping elements which are interconnected by discrete elastomeric segments. The gripping elements are separated by gaps so that a flexible hinge region is created by the elastomeric segments between adjacent gripping elements. The elastomeric segments provide both axial and radial spring action to the assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.