Forgiving profile pipe gasket
US4664421A · kind A · utility
Inventor
Key dates
| Filing date | Aug 29, 1986 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Aug 29, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/91
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gasket particularly suited for providing a leak resistant, deflection tolerant seal for a bell and spigot type of pipe coupling is provided. The gasket comprises a rubber web having a plurality of identical sealing ribs projecting radially inward in axially spaced relation. Each rib has an enlarged tapered base portion and a narrow finger portion which inclines inwardly and axially therefrom in cantilever fashion and which terminates in a tip spaced radially from the base of an axially adjacent rib. The finger portions are deflected into engagement with their adjacent sealing ribs when the spigot portion of one pipe is inserted axially into the bell portion of the other in which the gasket is mounted. The sealing ring prevent leakage even when the coupled pipes are misaligned slightly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.