Tumbling method of washing fabric in a horizontal axis washer
US5219370A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1992 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Jan 2, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2103/22
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An improved wash process is provided wherein during a low speed spin portion of the wash process, the wash chamber or wash basket is rotated about its horizontal axis at a spin speed to effect less than a one gravity centrifugal force on the fabric such that the fabric will tumble in the wash chamber. During this tumbling action a recirculating spray of highly concentrated detergent solution, preferably in the range of at least 0.5% to 12% by weight is directed onto the fabric for a first period of time. After the first period of time, the detergent solution is diluted somewhat, although the concentration remains above a normal concentration of 0.06 to .28%. The wash chamber will again be spun to effect less than a one gravity centrifugal force on the fabric such that the fabric will tumble in the wash chamber. The lesser concentrated detergent solution will then be recirculated on to the fabric during a second time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.