Method and apparatus for filtering magnetic debris out of work-functioning baths
US4206000A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1978 |
| Grant date | Jun 3, 1980 |
| Priority date | — |
| Expiry date | Nov 21, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C1/286
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A floatable magnetic filter screen (10, 40, 52, 60) for removing metallic debris from work-functioning baths (26, 26') comprises a tubular rectangular outer frame (11, 11', 14, 14', 16, 61) that supports a plurality of magnet-forming webs (18, 18', 62), in a predetermined array, within the central opening thereof. The magnets (23, 23', 64) of each web, when required, are encapsulated within a protective material covering (e.g., 19, 19') so as to physically isolate them from a given bath (26, 26') within which the filter screen (10, 40, 52, 60) is to be employed. While the filter screen is adapted to normally float on the surface of a given bath, through piece part (33, 33', 53) initiated immersion of the filter screen in the bath, preferably using a piece part-carrying basket (36, 36', 51), the bath solution is effectively forced through the filter screen during both the downward and subsequent upward displacement of the latter. As a result of such reciprocal displacement, any loose metallic debris (38) in the bath is magnetically drawn against magnet-defined sites on the filter screen, and may be readily removed periodically therefrom, such as with a simple water spray (39).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.