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:
May. 12, 2020
Filed:
Feb. 28, 2018
Vetco Gray, Llc, Houston, TX (US);
Rockford Dee Lyle, Houston, TX (US);
Jesse B. Riha, Houston, TX (US);
Daniel Louis Havelka, Houston, TX (US);
Robert James Wagner, Houston, TX (US);
Vetco Gray, LLC, Houston, TX (US);
Abstract
Embodiments of the present disclosure include systems and methods with a piston cylinder arrangement comprising an inner barrel positioned within an outer barrel, the inner barrel being linearly moveable along an axis. A primary sealing assembly at an upper end of the outer barrel includes a plurality of seals positioned to block debris from entering an interior chamber. Additionally, an end cap is coupled to the inner barrel and an end cap diameter is greater than an inner barrel outer diameter. Moreover a secondary sealing assembly is arranged between the end cap and the primary sealing assembly and includes a plurality of secondary seals positioned to block debris from entering the interior chamber of the riser tensioner, wherein the secondary sealing assembly reduces a stroke length of the inner barrel when installed above the primary sealing assembly.