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:
Mar. 29, 2016
Filed:
Jun. 22, 2011
Keum Dae Choo, Gyeongsangnam-do, KR;
D. Scott Brittin, Katy, TX (US);
Keum Dae Choo, 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 a damper structure for an enclosed derrick, which can constantly compensate and maintain a pressure of an inner space of an enclosed derrick structure. The damper structure for the enclosed derrick includes: one or more communication ducts installed in a side of the enclosed derrick; and one or more open/close dampers coupled to the communication ducts to open or close the communication ducts, whereby air is selectively supplied to or exhausted from the enclosed derrick.