Dual pressure cylinder

Details Dual pressure cylinder Dual pressure cylinder

2011-07-12

2011-07-12

Kreck, John (Department: 3672)

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

C405S223100, C166S355000, C092S08500R

Reexamination Certificate

active

07976247

ABSTRACT:
A self contained dual pressure cylinder for use in tensioner assemblies for oil and natural gas floating vessels. The self contained dual pressure cylinder can have a high pressure outer barrel surrounding a high pressure inner barrel, forming a high pressure gas channel, a low pressure outer barrel surrounding a low pressure inner barrel, forming a low pressure fluid channel. A high pressure gas port connected to a high pressure gas reservoir, a low pressure fluid port connected to a low pressure gas reservoir, a low pressure fluid compression area connected to the low pressure fluid port, a hollow rod slidingly engaged each inner barrel, a dual pressure capture plate with moveable rod seals and moveable rod wear, a piston a low pressure elastomeric seal, a low pressure/high pressure separator, and a high pressure elastomeric seal.

REFERENCES:
patent: 6554072 (2003-04-01), Mournian et al.
patent: 6554992 (2003-04-01), Smith
patent: 2008/0210108 (2008-09-01), Hahn et al.

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