Cryogenic beach cleaner
US4153555A · kind A · utility
Inventors
Key dates
| Filing date | Dec 22, 1976 |
| Grant date | May 8, 1979 |
| Priority date | — |
| Expiry date | Dec 22, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H1/001
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved method and apparatus are disclosed herein for cryogenically cleaning and restoring sandy beaches which have become contaminated by oil spills. In the method, a mixture of particulate, pulverized and recycled rubber and wood fines is applied to the contaminated area for absorbing the oil prior to cryogenic treatment. The absorption of the oil by the particulate rubber and wood enhances the solidification during the cryogenic treatment. In the apparatus, a hopper is mounted to a beach cleaning vehicle forwardly of a liquid cryogen spray head. The hopper is constructed to receive and discharge particulate absorbent before the contaminated area is contacted by the liquid cryogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.