Seal for floating roofs of storage tanks
US4397399A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1981 |
| Grant date | Aug 9, 1983 |
| Priority date | — |
| Expiry date | Sep 8, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D88/46
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sealing assembly comprising a flexible shield having one end rigidly connected to an upper rim portion of a floating roof movably disposed within a storage tank and having the opposite end thereof extending upwardly and outwardly toward the inner periphery of the tank, a flexible wiper blade connected to the outwardly extending end of the shield for engaging the inner surface of the tank wall, the combined shield and wiper blade being of a length greater than the average width of the rim space for assuring an efficient sealing engagement of the wiper blade with the inner periphery of the tank wall even during lateral movement of the floating roof within the tank, and a yieldable film or sheet interposed between the shield and the rim of the roof for assuring an efficient seal therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.