Drain pipe connector
US6647682B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Dec 31, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D2013/0436
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A means to engage two vertical pipes or tubes of unlike and increasing size that have been co-inserted such as with a roof or floor drain, in a manner that prevents the contained fluid from overspilling when the said pipes become full or when the fluid flows in a direction opposite from normal gravity flow, which is generally considered as flow from the smaller to the larger pipe. The means of engagement closes the void between the inside diameter larger pipe and outside diameter smaller pipe to withstand fluid pressure in a way that accounts for angular misalignment, pipe or tube eccentricity, manufacturing tolerance, as well as tube condition and debris attached to either pipe sidewall. More specifically, a roof drain system for existing roofs or new construction including a flanged outlet pipe for insertion into the roof drain pipe with the flange mounted on top of the roof. A water straining system is mounted on top of the flange. The outlet pipe is sealed to the interior of the drain pipe by a one-piece rubber molding seal that flexes to easily slide into the drain pipe and withstands high backup water pressures from the drain pipe without leaking. The seal has a Shore A durom…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.