Patent ID: 11958026
Assignee: SANISURE, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 21:
22. An aseptic mixing system for an aseptic process vessel having an inner cavity defining a volume and an upper mouth with an upper mouth diameter, comprising:
a solid inanimate mixer mounted for rotation about a central axis at the bottom of the process vessel, the mixer being generally circular in plan view with a disk-shaped body in which is mounted at least one magnet to enable coupling with a magnetic-drive exterior to the process vessel, the mixer having an overall outer diameter relative to the central axis that is less than the upper mouth diameter of the process vessel to enable passage therethrough, and a plurality of lower grooves formed in a lower face of the disk-shaped body; and
a bearing assembly mounted through a hole in a floor of the process vessel configured to support the mixer for rotation about the central axis, wherein the bearing assembly includes a bearing member adapted to seal on the floor of the process vessel around the hole, and which defines a central through hole, and a lower holding nut having an upstanding internally-threaded vertical column sized to pass through the central through hole, the lower holding nut having a lower flange arranged to be adhered to an underside of the floor of the process vessel, the bearing assembly further having a screw sized to pass down through a central throughbore in the disk-shaped body and engage the internally-threaded vertical column to secure the mixer above the floor while permitting rotation thereof.