Accession Number : ADD002913

Title :   Water Weighted Corer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Niskin,Shale Jack

Report Date : 20 Jul 1976

Pagination or Media Count : 6

Abstract : The patent relates to a water-weighted corer comprising a cylindrical tank mounted concentrically on a core barrel intermediate the coring tube and the shackle. The tank has a water inlet at its bottom and an air vent at its top so that during descent water enters the tank through the bottom inlet, forcing air out the top vent. During free fall the falling speed imparts a substantial amount of kinetic energy to the water mass in the tank, providing the driving force required for the corer to penetrate deeply into a sediment bed.

Descriptors :   *Ocean bottom sampling, *Core sampling, *Samplers, *Patents, Pistons, Free fall, Weight

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE