Patent ID: 8109347

Claim:
A core catcher provided at a lower end of a sample case in the inside of a corer to prevent loss of sediments taken in the inside of the sample case, wherein the core catcher includes: a body having an inside that is hollow; and first radial pins adhered to an inner periphery of the body and having a plurality of elastic pins projected toward an upper inner side of the body to allow introduction of the sediments toward the inside of the sample case and to be closed to prevent the loss of the sediments taken in the inside of the sample case, and second radial pins adhered to the inner periphery of the body to block a predetermined area of an upper or lower portion of the first radial pins, and wherein the second radial pins block 20 to 40% of a total area of the first radial pins from the side at which the first radial pins are adhered, and wherein the first radial pins and the second radial pins are respectively formed using a board with a plurality of cut parts, except at the area to be adhered to the body, the respective first and second radial pins having a constant width in a longitudinal direction of the respective first and second radial pins.