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:
Aug. 04, 2009
Filed:
Dec. 06, 2004
Harald Syse, Røyneberg, NO;
Jostein Aleksandersen, Randaberg, NO;
Harald Syse, Røyneberg, NO;
Jostein Aleksandersen, Randaberg, NO;
TDW Offshore Services AS, Stavanger, NO;
Abstract
The invention regards a hydraulic cylinder () or a plug comprising a hydraulic cylinder for operation of anchoring and or sealing devices, where the hydraulic cylinder comprising a cylinder chamber (), a piston head () within said cylinder chamber () forming two sub chambers (') of said cylinder chamber () one on each side of the piston head (), and a piston rod () which runs through the piston head () and said two sub chambers (′) or only one of said cub chambers. The hydraulic power unit () for operation of the hydraulic cylinder () is situated at least partly within the parts forming the hydraulic cylinder () itself, preferably the piston head () and or the piston rod ().