Electrostatic filtering device
US4620917A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1985 |
| Grant date | Nov 4, 1986 |
| Priority date | — |
| Expiry date | Apr 10, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Carbon particles are effectively removed from contaminated lubricating oil, for example, in a diesel engine by an electrostatic filtering device comprising a porous dielectric inserted between positive and negative electrodes in a container into which the contaiminated lubricating oil in introduced. In particluar, in the preferred embodiment the spaced parallel electrodes sandwich a porous dielectric film for collecting particles and a porous spacer which is disposed between the porous dielectric film and one of the electrodes. The pores of the porous spacer have a size which is considerably larger than that of the pores of the particle-collecting film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.