Patent · US Expired

Recovery of sediments from the bottom of the sea by suspended suction pipe

US4398361A · kind A · utility

3Cited by

7References

12Claims

0Family size

Assignee

Preussag Aktiengesellschaft

Inventors

Hans Amann · Hannover, DE
Jurgen Burkhardt · Burgkirchen an der Alz, DE

Key dates

Filing date	Oct 17, 1980
Grant date	Aug 16, 1983
Priority date	—
Expiry date	Oct 17, 2000

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21C50/00
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

In a method and apparatus for the recovery of sediments from the sea bottom, a suction head is lowered into the sediment and continuously moved in the sediment. The suction head includes loosening means in the form of a pivot plate with blades which pivot relative to the suction head in response to continuous movement of the suction head to scrape the sediment to loosen it.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.