Browse Prior Art Database

Minimal Air Loss Troubleshooting Card Cover

IP.com Disclosure Number: IPCOM000088002D
Original Publication Date: 1977-Apr-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 3 page(s) / 61K

Publishing Venue

IBM

Related People

DeSilva, DK: AUTHOR [+3]

Abstract

This card cover enables a printed circuit card to be extended for servicing purposes without causing an excessive loss of cooling air for the electronics equipment in which the card is located.

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Minimal Air Loss Troubleshooting Card Cover

This card cover enables a printed circuit card to be extended for servicing purposes without causing an excessive loss of cooling air for the electronics equipment in which the card is located.

Fig. 1 shows a cabinet or housing structure 10 for electronics equipment such as that used in a digital data processor. Housing 10 includes four normally covered board sections 11-14. The board in each section includes a number of card sockets into which are plugged printed-circuit cards having electronic modules and components mounted thereon. The board cover for section 12 has been removed for purposes of servicing one of the printed-circuit cards 15 located therein. The card to be serviced, i.e.. card 15a, is removed from its socket and plugged into a card extender 16, the other end of which is plugged into the board socket for the removed card.

Normally, the printed-circuit cards in sections 11-14 are cooled by means of an air mover located in a plenum section 17. The air mover in section 17 causes cooling air to flow up through the housing 10 and out through exhaust openings located at the top of the housing 10. When one of the board section covers is removed for purposes of servicing a card, the excessive air loss causes undesirable and potentially harmful temperature increases within the housing 10 in positions downstream from the removed cover.

This problem is eliminated by the use of the troubleshooting card cover 20 shown in Fig. 2. This card cover snaps in place over the exposed board section opening in the same manner as the original board section cover. Card cover 20 includes a series of narrow vertically extending card slot doors 21, one of which is located in front of each card socket position. Doors 21a and 21b are shown in the open position. Upper and lower vertically extendi...