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Browse Prior Art Database

Bubble Memory Package via Eggcrate

IP.com Disclosure Number: IPCOM000076736D
Original Publication Date: 1972-Apr-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Uberbacher, EC: AUTHOR

Abstract

A plurality of connections can be made in a very small space utilizing a wall structure popularly known as "eggcrate". For example, connections to a number of pins on very close centers extending from a circuit board can be made through an eggcrate structure. Each of the openings in the eggcrate structure is designed to surround one of the pins and the connector thereto fits into the eggcrate structure opening to complete the connection. The connector can also make an electrical connection with the walls of the eggcrate, which serve in some situations as a common grounding terminal. This eggcrate concept is extended to a bubble memory where the eggcrate walls surround the bubble memory chip.

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Bubble Memory Package via Eggcrate

A plurality of connections can be made in a very small space utilizing a wall structure popularly known as "eggcrate". For example, connections to a number of pins on very close centers extending from a circuit board can be made through an eggcrate structure. Each of the openings in the eggcrate structure is designed to surround one of the pins and the connector thereto fits into the eggcrate structure opening to complete the connection. The connector can also make an electrical connection with the walls of the eggcrate, which serve in some situations as a common grounding terminal. This eggcrate concept is extended to a bubble memory where the eggcrate walls surround the bubble memory chip. Each of the four walls has a coil embedded therein, which structure provides the four magnetic fields required to operate the bubble memory chip.

In Fig. 1, a circuit board 10 is shown containing the bubble memory chip modules 11. It can be seen that the chip modules 11 extend into the large square cavities 13 of the eggcrate assembly 12.

The bubble memory chip module 11, when assembled, is centrally positioned between the four coils which are embedded in the surrounding eggcrate walls. The circuit board 10 contains in addition to the chip modules 11, a wall connector assembly 14 capable of making electrical connections with the walls of the eggcrate. A cooling system is provided for the arrangement consisting of metal lobes 15, which extend...