Water traps
US4502500A · kind A · utility
Inventor
Key dates
| Filing date | Feb 14, 1983 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Feb 14, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4576
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A water trap comprises a body 10 which defines a passage having a downwardly extending portion 11 which in use communicates with the interior of a building and leads to a transverse portion 12 passing under a barrier 18. The transverse portion 12 leads in turn to an upwardly extension portion 13 which communicates through an outlet 14 with the exterior of the building. The transverse portion provides a gas barrier when filled with water. The trap includes at least one reservoir chamber 23, 24 which, when the trap is filled with water to the level of the outlet 14, contains sufficient water to refill the transverse portion 12 at least to the height of the barrier 18, should the transverse portion be emptied by siphonage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.