Cleaning and liquid contact with solids – Processes – Including use of vacuum – suction – or inert atmosphere
Patent
1997-07-14
1999-10-19
Warden, Jill
Cleaning and liquid contact with solids
Processes
Including use of vacuum, suction, or inert atmosphere
134 2218, 134 24, 134 37, B08B 504
Patent
active
059682841
ABSTRACT:
A method for removing a liquid from a container having a bowl and a flange, the bowl holding the liquid and containing a hydrophilic ophthalmic lens, wherein there is provided a nozzle with a central face and a shoulder around the periphery of the face. The shoulder has a sealing means which is sized to fit on the flange of the container, where it forms a sealed volume above the container bowl, this volume including the volume of the bowl itself. The central face has through it at least one fluid entrance passage and at least one fluid exit passage arranged so that the flow is distributed substantially symmetric about the center axis of the lens so that when the purging fluid is introduced into the sealed volume, there is no migration of the lens. There is connected to the entrance passage a source of purging fluid that has a pressure and flow sufficient to remove substantially all the liquid through the exit passage.
REFERENCES:
patent: 4341568 (1982-07-01), Christensen
patent: 5080839 (1992-01-01), Kindt-Larsen
patent: 5698047 (1997-12-01), Keene et al.
Edwards Russell J.
Keene Darren S.
Chaudhry Saeed
Johnson & Johnson Vision Products Inc.
Warden Jill
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