The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 2010
Filed:
Sep. 01, 2004
Yukio Kadomoto, Tokyo, JP;
Isao Yamanaka, Tokyo, JP;
Hiroshi Tanaka, Yokohama, JP;
Takahiko Tsuchiya, Fukuoka, JP;
Yukio Kadomoto, Tokyo, JP;
Isao Yamanaka, Tokyo, JP;
Hiroshi Tanaka, Yokohama, JP;
Takahiko Tsuchiya, Fukuoka, JP;
Mitsui Engineering & Shipbuilding Co., Ltd., Tokyo, JP;
K. Maikai Co., Ltd., Tokyo, JP;
Toho Chikakoki Co., Ltd., Fukuoka, JP;
Abstract
Remote operation wire line core sampling device capable of increasing efficiency of working and maintaining a wall of a hole using a stabilized sea-bottom core drill at a sea-bottom, and adopting a wire line system. The device includes a drill rod held by a chuck of the sea-bottom core drill, a wire line core barrel having, at a tip thereof, a bit for annularly drilling into ground, an inner tube assembly detachably incorporated in the wire line core barrel, and an over-shot assembly having a function for engagement thereof with a spear head part at a top end of an inner tube assembly. The device also includes a water swivel in which water supply ports are formed at upper and lower parts thereof, a modified built-in type over-shot assembly is formed at upper and lower parts thereof, and a modified built-in type over-shot assembly is incorporated therein to reside at an intermediate part thereof.