Browse Prior Art Database

Contact Set Tool

IP.com Disclosure Number: IPCOM000050699D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Jurgenson, AG: AUTHOR

Abstract

The contact set tool 10 (Figs. 1 and 2) facilitates replacement of spring contacts 20 on circuit card 30. The spring contacts 20 are normally contained in a plastic cap (not shown) which snaps onto circuit card 30 and has holes for receiving pins which make electrical contact with spring contacts 20. The circuit card 30 with logic modules (not show) mounted thereon is a relatively expensive item, and because of this it is worthwhile to repair damaged spring contacts 20. The damaged spring contacts 20 are removed and replaced by hand. The alignment of the spring contacts 20 is critical, and the contact set tool 10 functions both as a carrier and a holder of the contacts to support them in aligned position as they are soldered into place.

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Contact Set Tool

The contact set tool 10 (Figs. 1 and 2) facilitates replacement of spring contacts 20 on circuit card 30. The spring contacts 20 are normally contained in a plastic cap (not shown) which snaps onto circuit card 30 and has holes for receiving pins which make electrical contact with spring contacts 20. The circuit card 30 with logic modules (not show) mounted thereon is a relatively expensive item, and because of this it is worthwhile to repair damaged spring contacts 20. The damaged spring contacts 20 are removed and replaced by hand. The alignment of the spring contacts 20 is critical, and the contact set tool 10 functions both as a carrier and a holder of the contacts to support them in aligned position as they are soldered into place. The leg 21 of spring contact 20 is soldered onto a land 31 which is electrically connected by printed circuitry 32 to plated through hole 33. The plated through hole 33 receives one of the contact pins from logic modules (not shown) which are then interconnected in a conventional manner by printed circuitry.

In some instances the circuit card 30, with associated land 31, become damaged to the point where the land 31 has to be replaced. The contact set tool 10 also facilitates alignment of a land 31 and holds it in place as it is bonded to circuit card 30, using an adhesive such as an epoxy resin. After a land 31 has been repaired, the contact sit tool 10 is used to hold the contact 20 in place as a wire is soldere...