Apparatus for detection and containment of pollutants in a drainage system
US5067850A · kind A · utility
8Cited by
8References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Aug 31, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F7/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A storm drainage system including a gate which controls the release of the contents of the drainage system. The gate is motor activated which is responsive to manual activation or hydrocarbon sensor activation. The drainage system includes an overload sensor which detects a filled drainage system, for example by a heavy rain. The sensor provides a high-liquid-level override signal to the motor in response to the filled drainage system to open the gate independently of the hydrocarbon sensor activation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.