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Vacuum-Formed Protective Cover for a Circuit Board

IP.com Disclosure Number: IPCOM000044198D
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Mink, JW: AUTHOR [+2]

Abstract

A printed circuit board 1 has a cover 2 secured thereto by vacuum forming to prevent shorting of electronic components on the printed circuit board 1 through foreign particles falling onto the printed circuit board 1. A cover 2 is preferably formed of a relatively flexible sheet of styrene or other similar material having a thickness of about one to two mils. If the cover 2 is not thin enough to enable cooling of electrical components on the printed circuit board 1, the cover 2 has small holes 3 formed therein. The cover 2 also may be of a dark color, such as charcoal, to enable quicker cooling. The cover 2 has openings 4 therein to enable reception of connectors 5 on the printed circuit board 1.

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Vacuum-Formed Protective Cover for a Circuit Board

A printed circuit board 1 has a cover 2 secured thereto by vacuum forming to prevent shorting of electronic components on the printed circuit board 1 through foreign particles falling onto the printed circuit board 1. A cover 2 is preferably formed of a relatively flexible sheet of styrene or other similar material having a thickness of about one to two mils. If the cover 2 is not thin enough to enable cooling of electrical components on the printed circuit board 1, the cover 2 has small holes 3 formed therein. The cover 2 also may be of a dark color, such as charcoal, to enable quicker cooling. The cover 2 has openings 4 therein to enable reception of connectors 5 on the printed circuit board 1. The vacuum-form process is utilized to contour the cover 2 to conform to the various areas of the printed circuit board 1, as shown in Fig. 2; this attaches the cover 2 to the printed circuit board 1. This vacuum-form process also seals the cover 2 against the connectors 5. Thus, if the holes 3 (Fig. 1) are not required in the cover 2, the cover 2 protects against humidity.

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