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. 18, 2024
Filed:
Feb. 08, 2022
Toa Corporation, Tokyo, JP;
Japan Agency for Marine-earth Science and Technology, Yokosuka, JP;
Tomohiro Morisawa, Tokyo, JP;
Shinya Omori, Tokyo, JP;
Ryutaro Murakami, Tokyo, JP;
Hiroshi Iida, Tokyo, JP;
Eigo Miyazaki, Yokosuka, JP;
Keita Akiyama, Yokosuke, JP;
Masanori Kyo, Yokosuka, JP;
Ikuo Sawada, Yokosuka, JP;
Yoshihisa Kawamura, Yokosuka, JP;
TOA Corporation, Tokyo, JP;
Japan Agency for Marine-Earth Science and Technology, Kanagawa, JP;
Abstract
A mining riser pipe is extended from above water toward a water bottom containing water bottom resources, and a lower portion of an insertion pipe connected to a lower portion of the mining riser pipe is inserted into the water bottom. A liquid is supplied into the insertion pipe and a rotation shaft extends axially inside both of pipes is rotated to rotate stirring blades attached to a lower portion of the rotation shaft inside the insertion pipe, thereby drilling and dissolving mud S inside the insertion pipe into a slurry form by is raised to an upper portion of the insertion pipe by a stirring flow generated by the rotation of the stirring blades, and the raised mud is lifted above the water through the mining riser pipe by a lifting force.