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Circuit Contact

IP.com Disclosure Number: IPCOM000094551D
Original Publication Date: 1965-Mar-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Schick, HC: AUTHOR

Abstract

This contact makes a reliable connection from a mounting board having positioning pins and voltage bus wires to a circuit board having printed voltage distribution circuits on it.

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Circuit Contact

This contact makes a reliable connection from a mounting board having positioning pins and voltage bus wires to a circuit board having printed voltage distribution circuits on it.

Mounting board 1 is formed with a number of locating pins 2 secured to it in tapered depressions 3. One or more circuit boards 4, having printed circuits 5 for distributing voltage to components on the circuit board, are positioned on pins 2 and secured against mounting boards 1 by sleeves 6 and screws 7. To enable power to be supplied to circuit 5 on board 4, spring wire 8 surrounds the pin 2 between boards 1 and 4 and has extension 9 through the mounting board for connection to a source. Wire 8 is made of a good conductor spring material such as beryllium copper. Wire 8 is formed in the shape of a truncated cone, having a lesser vertex angle than the sides of depression 3. Wire 8 is also formed to cover the side of the cone in a sinuous path to provide flexibility.

When circuit board 4 is mounted on pin 2, its land 5 contacts wire 8 to provide a connection. Further movement spreads the bottom of wire 8 to approximately fit depression 3. The residual tension in wire 8 provides a good connection to land 5 and also to pin 2. Other circuit boards can be mounted on pin 2 with a wire 8 between circuit boards to complete the circuit from a pin 2 to a land on the circuit.

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