Patent ID: 7124841

Claim:
A crustal core sampler for coring crustal core sample by drilling crust using a fluid for drilling work, said crustal core sampler comprising: a cylindrical drill pipe comprising at a lower end thereof a drill bit having at least one ejection opening for electing the fluid for drilling work; and an inner barrel arranged in the drill pipe; wherein the inner barrel comprises: a cylindrical inner barrel body, which has an opening for inserting a columnar crustal core portion at a lower end thereof and which receives a columnar crustal core portion formed by drilling as a crustal core sample in an interior thereof; a core elevator arranged in an internal space of the inner barrel body so as to be movable in an axial direction thereof; and a flow-able coating material-ejecting mechanism including a channel-forming member for forming a flow-able coating material-running channel with an outer peripheral surface of the inner barrel body, and flow-able coating material-ejecting openings for ejecting a flow-able coating material from the flow-able coating a material-running channel inwardly in a radial direction of the inner barrel body at a position in close vicinity of the lower end of the inner barrel body; wherein the inner barrel is arranged such that the opening for inserting the columnar crustal core portion is positioned above the ejection opening of the drill bit for the fluid for drilling work; wherein the columnar crustal core portion formed by the drilling is coated with the flowable coating material ejected from the flow-able coating material-ejecting openings while being positioned in the interior of the inner barrel body while being relatively raised in the internal space of the inner barrel body; wherein the core elevator comprises: a core elevator body having a central through-hole; and an opening and closing valve body, arranged in the central through-hole of the core elevator body, for controlling a linked state between a space in the central through-hole and the flow-able coating material-ejecting openings by moving in a vertical direction; and wherein a temporary linked state is achieved between the space in the central through-hole of the core elevator body and the flowable coating material-ejecting openings at a beginning of upward movement of the core elevator body within the inner barrel body.