Spring-loaded secondary seal for floating-roof storage tank
US7044322B2 · kind B2 · utility
2Cited by
16References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2002 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Feb 22, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D88/46
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A low-profile secondary seal for floating-roof storage tanks has a tip seal that includes a series of segmental adapter plates connected to the shoe plates. A tip seal element is mounted on the adapter plates. A fabric extends between the tip seal and the floating roof. A pusher is hinged to the floating roof, and includes a pusher bar with two ends that are disposed in a sliding arrangement against the adapter plates. A spring is connected to the pusher at an inclined angle, providing a mechanical advantage as the spring biases the pusher and pusher bar outwardly against the plates, pressing the tip seal against the tank shell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.