Carbon dioxide dry cleaning system
US5904737A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1997 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Nov 26, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F43/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A carbon dioxide dry cleaning system features a pair of liquid carbon dioxide storage tanks in communication with a compressor. A sealed cleaning chamber contains the objects being dry cleaned. By selectively pressurizing the storage tanks with the compressor, liquid carbon dioxide is made to flow to the cleaning chamber through cleaning nozzles so as to provide agitation of the objects being dry cleaned. Liquid carbon dioxide displaced from the cleaning chamber returns to the storage tanks. A still is disposed within one of the storage tanks and receives soiled liquid carbon dioxide as it is returned from the chamber. The pressure in the storage tank causes the soiled liquid carbon dioxide in the still to boil off. The gas is communicated to a third tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.