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Leaf Spring Contactor Assembly

IP.com Disclosure Number: IPCOM000081752D
Original Publication Date: 1974-Aug-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Formikell, AE: AUTHOR [+2]

Abstract

The figures show a leaf-spring contactor assembly formed as an integrated unit with mechanically independent blade tips held in a fixed relationship to each other by an insulated ring, which is also an integral part of the unit. The blade relationship is thus established by the art work used for the photoetch and is retained throughout the contactor life.

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Leaf Spring Contactor Assembly

The figures show a leaf-spring contactor assembly formed as an integrated unit with mechanically independent blade tips held in a fixed relationship to each other by an insulated ring, which is also an integral part of the unit. The blade relationship is thus established by the art work used for the photoetch and is retained throughout the contactor life.

The assembly is formed from a beryllium-copper MYLAR* laminent by a photoetch process, in which the ring 10 serves as a ground plane and the blades 11 serve to contact pads 12 on a device 13. The etching of the ring 10 and the blades 11 can be removed by any suitable solution such as a ferric chloride bath. The exposed MYLAR layer 15 is removed by a sulfuric acid bath. The ring 10 gives rigidity to the structure and serves to hold the blades 11 in a fixed relationship, while the MYLAR 15 interposed between the ring 10 and the blades 11 insulates the ring from the blades, preventing electrical continuity between the two parts.

If desired, the blades 11 may be utilized as a capacitor for noise repressing and testing, and the MYLAR material disposed between the ring and the blades can be varied in thickness to obtain desirable capacitance for the unit. If further desired, support members can be etched into place to control the variance in blade tip deflection, such that the contact can be used as a missing pad contactor.

The above unit is thus an integral leaf-spring contactor with bl...