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US 6,485,000 B1Granted
Device by ball valve
OwnerIngolf Klyde, Erling Røyrvik +1inventors
InventorsIngolf Klyde, Erling Røyrvik, Einar Saghaug
Life of this patent
Estimating the term…
Abstract
A ball valve having a valve housing with an inlet and an outlet, a valve body with a bore and sealing bodies, and valve seats which are in sealing planes parallel to one another forming an oblique angle with the inlet and the outlet, and in which the sealing bodies are positioned in body planes parallel to one another, forming a similar oblique angle with the axis of the valve body.
Claims10
A valve comprising:
- a valve housing comprising an inlet and an outlet having a common center line along a valve axis,
- the valve housing further comprising a valve body having a bore therethrough, the valve body being rotatably arranged about an axis of rotation perpendicular to the bore and arranged rotatably between a first position, in which the bore communicates with the inlet and the outlet, and a second position, in which first and second sealing bodies of the valve body seal against first and second valve seats by the inlet and the outlet of the valve housing,
- the valve seats being sealing planes arranged parallel to each other forming a first oblique angle with the inlet, the outlet and the common center line,
- the sealing bodies arranged in body planes parallel to each other forming a second oblique angle with a transverse axis of the valve body,
- wherein the valve seats and the sealing bodies include cooperating, annular sealing surfaces about their respective axes of symmetry perpendicular to the respective sealing planes and body planes,
- the sealing surfaces being curved and forming a third oblique angle a with their respective sealing planes and body planes, and
- wherein, the cooperating sealing surfaces have varying curvatures.
4 more elements
Dependencies are inferred from the claim text.