The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 1983
Filed:
Oct. 17, 1980
Applicant:
Inventors:
Hans Amann, Hanover, DE;
Jurgen Burkhardt, Hanover, DE;
Klaus Luck, Wennigsen, DE;
Fritz O Poeppel, Wunstorf OT Luthe, DE;
Assignee:
Preussag Aktiengesellschaft, , DE;
Primary Examiner:
Int. Cl.
CPC ...
E02F / ;
U.S. Cl.
CPC ...
37 57 ; 37 58 ; 37195 ; 7386441 ; 7386443 ; 175-5 ; 175 58 ;
Abstract
In a method and apparatus for the recovery of sediments from the sea bottom, a suction head having a mouth is lowered into the sediment, raised from the sediment to form a depression, laterally moved to a new location adjacent the first depression, and the cycle is repeated to form a new depression. The suction head includes loosening means in the form of a worm or flukes which exert a low frictional resistance with respect to the sediment during lowering of the suction head and high frictional resistance when the head is being raised from the sediment.