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. 17, 2002
Filed:
Dec. 04, 2000
Applicant:
Inventors:
James B Wilson, Nailsea, GB;
Christopher R King, Stroud, GB;
Assignee:
ABB Offshore Systems Limited, , GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 3/414 ; E21B 3/400 ;
U.S. Cl.
CPC ...
E21B 3/414 ; E21B 3/400 ;
Abstract
A flow control device comprises an outer sleeve having at least one aperture through its wall, and an inner sleeve having at least one aperture through its wall. Relative sliding movement of the sleeves is provided between “open” positions allowing for variable flow of fluid through the apertures of the sleeves and “closed” positions. A pressure-reducing region is arranged to reduce the pressure of fluid flowing through at least one aperture of one of the sleeves.