Dissolution test vessel with integral verticality control
First Claim
1. A vessel comprising:
- a cylindrical section coaxially disposed about a central axis of the vessel, the cylindrical section comprising an inside vessel surface, an outside vessel surface opposing the inside vessel surface, an upper end region circumscribing a vessel opening, and a lower end region axially spaced from the upper end region;
a bottom section disposed at the lower end region;
a flange coaxially disposed about the central axis, the flange comprising a main flange portion extending radially outward from the outside vessel surface at the upper end region, and a bottom surface facing generally toward the lower end region and perpendicular to the inside vessel surface, wherein the bottom surface lies in a horizontal plane and is entirely coplanar with the horizontal plane; and
a shoulder coaxially disposed about the central axis in the upper end region, the shoulder extending radially outward from the outside vessel surface and located axially between the flange and the lower end region, the shoulder comprising an outside shoulder surface concentric with the inside vessel surface relative to the central axis.
2 Assignments
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Accused Products
Abstract
A vessel includes a cylindrical section coaxially disposed about a central axis of the vessel. The cylindrical section includes an inside vessel surface, an outside vessel surface opposing the inside vessel surface, an upper end region circumscribing a vessel opening, and a lower end region axially spaced from the upper end region. A bottom section is disposed at the lower end region. A flange is coaxially disposed about the central axis and extends radially outward from the outside vessel surface at the upper end region. The flange includes a bottom surface facing generally toward the lower end region and perpendicular to the inside vessel surface. A ring may be coaxially disposed about the central axis and provide the bottom surface. An annular shoulder may protrude from the outside vessel surface, and may be spaced from or integrally adjoined to the flange.
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Citations
20 Claims
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1. A vessel comprising:
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a cylindrical section coaxially disposed about a central axis of the vessel, the cylindrical section comprising an inside vessel surface, an outside vessel surface opposing the inside vessel surface, an upper end region circumscribing a vessel opening, and a lower end region axially spaced from the upper end region; a bottom section disposed at the lower end region; a flange coaxially disposed about the central axis, the flange comprising a main flange portion extending radially outward from the outside vessel surface at the upper end region, and a bottom surface facing generally toward the lower end region and perpendicular to the inside vessel surface, wherein the bottom surface lies in a horizontal plane and is entirely coplanar with the horizontal plane; and a shoulder coaxially disposed about the central axis in the upper end region, the shoulder extending radially outward from the outside vessel surface and located axially between the flange and the lower end region, the shoulder comprising an outside shoulder surface concentric with the inside vessel surface relative to the central axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A dissolution test apparatus comprising:
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a vessel support member comprising a top surface and an inside edge circumscribing an aperture; and a vessel extending through the aperture and comprising; a cylindrical section coaxially disposed about a central axis of the vessel, the cylindrical section comprising an inside vessel surface, an outside vessel surface opposing the inside vessel surface, an upper end region circumscribing a vessel opening, and a lower end region axially spaced from the upper end region; a bottom section disposed at the lower end region; a flange coaxially disposed about the central axis, the flange comprising a main flange portion extending radially outward from the outside vessel surface at the upper end region, and a bottom surface facing generally toward the lower end region and perpendicular to the inside vessel surface, wherein the bottom surface lies in a horizontal plane and is entirely coplanar with the horizontal plane, wherein the inside vessel surface is parallel to the inside edge of the vessel support member; and a shoulder coaxially disposed about the central axis in the upper end region, the shoulder extending radially outward from the outside vessel surface and located axially between the flange and the lower end region, the shoulder comprising an outside shoulder surface concentric with the inside vessel surface relative to the central axis, the outside shoulder surface abutting the inside edge of the aperture. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for centering a vessel in an aperture of a vessel support member of a dissolution test apparatus, the aperture being coaxial with a vertical axis running through a center of the aperture, the method comprising:
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inserting the vessel through the aperture, the vessel comprising an inside vessel surface coaxially disposed about a central axis of the vessel, an outside vessel surface, a flange extending radially outward from the outside vessel surface, and a bottom surface extending axially downward from the flange and perpendicular to the inside vessel surface, wherein the vessel further comprises an annular shoulder protruding radially outward from the outside vessel surface, the annular shoulder comprising an outside shoulder surface concentric with the inside vessel surface relative to the central axis; and supporting the vessel in a vertical orientation relative to the aperture by placing the bottom surface on a top surface of the vessel support member, wherein the entire inside vessel surface is parallel with the vertical axis. - View Dependent Claims (18, 19, 20)
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Specification