Underground storage tank of corrosion-resistant materials with internal steel rib
US4948007A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Jun 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S220/918
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A steel rib, designed for affixation to the interior of an underground storage tank, provides improved compression characteristics, with a reduction in cost of preparation and materials. The rib is provided with diametrically opposed vents, which may be formed by cutting a portion of a hollow, rectangular rib, rotating it 90.degree. in a direction orthogonal to the plane of the rib, and reaffixing it, so as to occlude the interior of the rib. When used to reinforce a double-walled tank, the rib allows the strengthening of the outer wall to enhance resistance to penetration and damage frequently incurred in handling, and reduce installation costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.