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:
Oct. 15, 2013
Filed:
Jun. 18, 2009
Applicants:
Jeffrey Charles Edwards, Aberdeen, GB;
Dewi Graham Rankin, Aberdeenshire, GB;
Inventors:
Jeffrey Charles Edwards, Aberdeen, GB;
Dewi Graham Rankin, Aberdeenshire, GB;
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 43/36 (2006.01); E21B 17/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
A riser weak link () is described. The riser weak link comprises an upper housing () for connecting to a riser upper section (), a lower housing () for connecting to a riser lower section (), at least one connection device for releasably connecting the upper and lower housings, and a pressure application device () adapted to apply a coupling force to the upper housing to at least partially counter a separation force applied, in use, by well pressure, the well pressure separation force acting to separate the upper and lower housings.