Tube for use in a pelleting centrifuge rotor
AssigneeE. I. Du Pont de Nemours and Company
InventorsWilliam A. Romanauskas, Hugh H. Tansey, III
Life of this patent
Estimating the term…
Abstract
A tube for use in a pelleting centrifuge rotor is characterized in first aspect by a first, acute, corner and a second, obtuse, corner defined in the lowermost pelleting region thereof. The corner defined by the acute angle lies a greater axial distance from the mouth of the tube than the corner defined by the obtuse angle. In a second aspect the tube the interior of the tube has a constricted region with a guide adjacent thereto. The guide channel is sized to accept a supernatant removal implement.
Claims8
A tube for use in a pelleting centrifuge rotor to separate solid particles from a liquid supernatant in which they are suspended, the tube having a body with an interior volume, the tube terminating in a mouth, the interior volume comprising an upper portion and a lower pelleting portion, the tube having an axis extending therethrough,
- the pelleting portion being defined by at least first and second interior surfaces which converge toward each other to meet along a line of convergence that forms a tube bottom, the pelleting portion of the tube having a first and a second corner respectively defined at a respective end of the line of convergence, the first corner subtending an acute angle defined between the line of convergence and a portion of the tube interior and the second corner subtending an obtuse angle defined between the line of convergence and another portion of the tube interior.
- the corner subtending the acute angle lying a greater axial distance from the mouth of the tube than the corner subtending the obtuse angle.
A tube for use in a pelleting centrifuge rotor to separate solid particles suspended in a liquid supernatant from the supernatant, the tube having a body with an interior volume, the tube terminating in a mouth, the interior volume comprising an upper portion and a lower pelleting portion, the tube having an axis extending therethrough,
- the pelleting portion being defined by at least a first and a second interior surface which cooperate to form a first and a second corner therein,
- the improvement comprising:
- the interior volume of the tube has a generally keyhole-shaped configuration when viewed in a plane perpendicular to the axis of the tube, the keyhole-shaped configuration being defined by a diametrically extending constricted region and an relatively enlarged, relative to the constricted region, guide channel adjacent thereto, the guide channel having an axis extending therethrough that projects toward a corner of the tube.
Dependencies are inferred from the claim text.