Seal for floating roof of storage tank
US5927534A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | May 20, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D88/46
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A seal for sealing the space between the inner wall of a tank and a roof floating on a liquid product within the tank includes a plurality of partially overlapping barrier plates mounted along a rim of the floating roof so as to extend outwardly along a first portion of each plate and then downwardly along a second portion of each plate which is relatively flat and which forms a seal against the inner wall of the tank. A plurality of resilient tension springs, mounted in spaced-apart relation along the rim of the floating roof, extend outwardly and bias the seals formed by the second portions of the plates against the inner tank wall. A vapor barrier fabric, mounted on the rim of the floating roof together with the plates and the tension springs, covers the first and second portions of the plates, while a plurality of fabric spring straps, mounted on the rim of the floating roof in conjunction with the tension springs, extend along the undersides of the plates and protect the vapor barrier fabric from the tension springs. Bumper bars, mounted in spaced-apart relation along the rim of the floating roof, extend outwardly along the first portions of adjacent ones of barrier plates to …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.