Cleaning apparatus for electronic components and/or precision parts of machinery
US4798218A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 1986 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | May 28, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S134/902
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Cleaning apparatus particularly for cleaning printed circuit boards, of the type comprising an enclosure through which passes a conveyor conveying the boards along a continuous path, at least one cleaning unit, using solvent and so arranged as to spray the solvent over and under the boards carried along the path, at least one solvent reservoir situated at the lower part of the enclosure and designed to receive the solvent dripping after the spraying operation, wherein the apparatus further comprises an ultrasonic cleaning unit comprising a solvent storing tank arranged in the enclosure, in parallel relationship with respect to a horizontal portion of the path and at a short distance below the horizontal portion and above the reservoir, and equipped with ultrasonic generators, the storing tank having at least one draining pipe issuing into the reservoir and controlled by a valve, and an overflow along one side of the tank on the boards inlet side, and controls for the selective control of the spray-cleaning unit, of said ultrasonic cleaning unit and of said valve, so as to determine a first mode of operation in spray cleaning and second mode of operation in ultrasonic cleaning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.