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. 06, 2015
Filed:
Jan. 24, 2011
Egil Eriksen, Foldrøyhamn, NO;
Egil Eriksen, Foldrøyhamn, NO;
Electrical Subsea & Drilling AS, Straume, NO;
Abstract
A cylindrical, hollow stuffing box arranged to be able to take up geometrical differences between drill pipes and tool joints includes an outer housing, an upper and a lower set of support plates and also a sleeve-shaped, flexible sealing element arranged rotationally between said support plates and enclosed by a liquid filled, a pressurized annulus which in a fluid sealing manner is defined by a central part of the stuffing box housing, the outside of the sealing element and said support plates; each of the upper and lower support plate sets comprise two halves connected to an actuator each arranged for radial displacement of the halves; each of the support plate halves comprise a cut-out arranged to be able to encircle a peripheral portion of the drill string; and the inside and the ends of the sealing element comprise cast-in, ceramic elements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile