Boring or penetrating the earth – Processes – Sampling of earth formations
Reexamination Certificate
2008-03-18
2008-03-18
Gay, Jennifer H. (Department: 3676)
Boring or penetrating the earth
Processes
Sampling of earth formations
C175S020000
Reexamination Certificate
active
07343984
ABSTRACT:
A core sample collector includes a cylinder and a piston, wherein the piston includes a piston body, upper piston rings and lower piston rings, and a sterilizing agent is held in a space defined between the piston, the cylinder, the upper piston ring and the lower piston ring. The sterilizing agent may be an antimicrobial polymeric gel. A core sample is collected by contacting the cylinder against a surface from which the core sample is to be taken, and causing relative movement between the cylinder and the piston such that: (i) the sterilizing agent is applied to the inner peripheral wall surface of the cylinder, (ii) the upper and lower piston rings scrape the sterilizing agent from the inner peripheral wall, and (iii) a core is received in the cylinder.
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Deguchi Shigeru
Kitazato Hiroshi
Masui Noriaki
Tsujii Kaoru
Frishauf Holtz Goodman & Chick P.C.
Gay Jennifer H.
Independent Administrative Institution, Japan Agency for Marine-
Stephenson Daniel P
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