Accession Number : ADD001391

Title :   Expendable Core Nose and Core Catcher Retainer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Bachman,Richard T ; O'Mara,Lawrence R

Report Date : 03 Sep 1974

Pagination or Media Count : 8

Abstract : The patent describes an improved corer for taking a core sample of marine sediment which is dropped onto and embedded in the ocean floor. During penetration, a core sample fills an elongate barrel member. As the corer is withdrawn, a tapered corer nose remains in the sediment while the elongate barrel member is pulled free. Simultaneously, a cylindrically shaped array of flexible fingers are drawn together by an elastic band to retain the core sample inside the barrel member. Since the flexible fingers are held outside of the path of the core sample as it enters the barrel member, there is no disturbance or commingling of the different layers of the core sample when it is being taken.

Descriptors :   *Ocean bottom sampling, *Samplers, *Patents, Core sampling, Sediments, Ocean bottom, Oceanographic equipment, Retractable

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE