Patent ID: 9322265
Filing Date: 2016-04-26
CPC Classification: E21B

Claim Text:
1. A sediment coring apparatus for preventing a loss and a disturbance of samples in a core, comprising: a core filled with marine sediments; an external tube inserted into a seabed for performing a coring operation; the core which is disposed in the external tube and has the marine sediments filled from a bottom portion thereof by being inserted into the seabed at the same time when the external tube is inserted into the seabed; a stopper which is disposed to be adhered to a top portion of the core to seal the top portion of the core; a screw which is disposed over the core and rotates when the external tube and the core inserted into the seabed move upward in the state in which the external tube and the core contact seawater when the external tube and the core are pulled up; and a stopper moving part having a stopper moving shaft which connects the screw with the stopper to move the stopper toward the core in response to the rotation of the screw when the external tube and the core are pulled up so as to seal the top portion of the core.