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:
Dec. 08, 2015
Filed:
Jun. 22, 2011
Yu Young Lee, Gyeongsangnam-do, KR;
D. Scott Brittin, Katy, TX (US);
Yu Young Lee, Gyeongsangnam-do, KR;
D. Scott Brittin, Katy, TX (US);
Daewoo Shipbuilding & Marine Engineering Co., Ltd., Seoul, KR;
Transocean Sedco Forex Ventures Limited, George Town, KY;
Abstract
Provided is an enclosed derrick structure of an arctic ship, which provides an installation space for an exhaust unit at an upper portion of an enclosed derrick. The enclosed derrick structure of the arctic ship includes: an enclosed derrick; a crown block section disposed at an upper portion of the enclosed derrick such that a crown block is installed and an installation workspace is formed thereinside; and an exhaust unit installed in the installation workspace to communicate with the exterior.