Browse Prior Art Database

Cleaning Electronic Circuitry

IP.com Disclosure Number: IPCOM000084598D
Original Publication Date: 1975-Dec-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Lau, JA: AUTHOR [+2]

Abstract

The apparatus relates to the provision of a water-cooled cover suitable for vapor-tight and contamination-free sealing of glass vessels. It has application in the solvent cleaning of electronic parts and assemblies and their extraction for analytical tests.

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Cleaning Electronic Circuitry

The apparatus relates to the provision of a water-cooled cover suitable for vapor-tight and contamination-free sealing of glass vessels. It has application in the solvent cleaning of electronic parts and assemblies and their extraction for analytical tests.

Generally, sealing glass containers of small size where contamination is to be avoided, is accomplished by ground glass joints. However, when dealing with vessels, 1 liter and larger, vapor-tight and contamination-free sealing is a problem. Usually these vessels and covers are built with precisely ground flat flanges. However, tightening the flanges with clamps does not provide sufficiently vapor-tight seal, and the addition of gaskets does not solve the problem since they tend to contaminate the solvent.

The problem of sealing is especially critical when using a low-boiling solvent, such as, methyl ethyl ketone, isopropanol, and, in particular, fluorocarbon. The loss of such solvents by leakage is extremely expensive and creates a possible fire or toxicological hazard.

As shown in the drawing, the apparatus comprises a stainless steel cover which consists of a steel plate having water channels next to the surfaces to be sealed. Cold water is allowed to circulate in these channels causing solvent vapors to condense instead of escaping. The access openings for inserting steel rods are also cooled eliminating the prior need for stirrer stuffing boxes.

The bottom portion of the cover...