Double wall underground storage tank
US5115936A · kind A · utility
20Cited by
14References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1991 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Jan 23, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D90/501
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An underground storage tank has an inner wall and an outer wall defining a generally annular space for receiving a leak detecting fluid, and a plurality of ribs bonded to the inner and outer walls and projecting radially outwardly from the inner wall, each rib comprising sidewalls and a top wall, the outer wall being attached to the top wall of each rib but substantially unattached to the sidewalls of each rib, and the outer wall substantially conforming to the contour of the inner wall and the ribs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.