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:
Jan. 01, 2019
Filed:
Oct. 31, 2014
Applicant:
National Oilwell Varco Norway As, Kristiansand S, NO;
Inventor:
Sigmund Askestad, Tvedestrand, NO;
Assignee:
NATIONAL OILWELL VARCO NORWAY AS, Kristiansand S, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63B 21/18 (2006.01);
U.S. Cl.
CPC ...
B63B 21/18 (2013.01);
Abstract
A chain stopper is connectable to a support structure, such as a platform, and comprises: a chain locking portion for automatically engaging a first chain link of a chain so as to prevent the chain from being pulled in a first direction and; an activation portion connected to the chain locking portion. The activation portion is configured such that, upon pulling the chain in a second direction, the activation portion is adapted to be engaged by the chain so as to disengage the chain locking portion from the first chain link, allowing the chain to be pulled in the second direction.