Bleaching and dyeing; fluid treatment and chemical modification – Fluid treatment – Manipulation of liquid
Patent
1998-05-12
1999-08-31
Coe, Philip R.
Bleaching and dyeing; fluid treatment and chemical modification
Fluid treatment
Manipulation of liquid
8159, 68 18C, 68139, 68140, D06F 4302, D06F 4308
Patent
active
059437219
ABSTRACT:
A system and method for cleaning an article with cleaning fluid comprising a liquified gas, preferably carbon dioxide, maintained at a pressure elevated above atmospheric pressure in the wash chamber of a pressure vessel. A basket holding the article is rotated in the wash chamber by a drive shaft passing through a wall of the pressure vessel, and a seal mechanism for this passage prevents escape of the cleaning fluid. The seal mechanism includes a first seal component adjacent to the wash chamber and a second seal component outboard of the first seal component to provide a sealant chamber in which a pressurized sealant fluid is provided such that a pressure differential across the first seal component is substantially less than the pressure differential between the wash chamber and atmospheric pressure The sealant fluid may be a gaseous component or a liquid component of the cleaning fluid. Fluid and control systems are provided for automating washing, rinsing and sealing operations.
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Jun. 1996 Chesterton Brochure on 225 Cartridge Dual Seal (4 pages).
Chesterton Drawing Form No. SPDO29 dated May 27, 1994.
LeBlanc Maurice O.
Lerette Ricky D.
Silvia George A.
American Dryer Corporation
Coe Philip R.
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