Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1992-06-15
1993-10-05
Jones, David
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
723912, 72710, 22818022, 437183, B21J 1302
Patent
active
052494500
ABSTRACT:
A wirebond probe head is modified for use in forming raised portions from material. The modified head includes a main portion and a sleeve, with the sleeve functioning as a shroud to reduce the tendency of forged material to exude from the periphery of the wirebond probe. The sleeve may also be vibrationally isolated from the main portion of the head in order to attenuate vibrational energy transferred from the main portion of the head to the sleeve. The inventive head functions by being brought into close proximity to a surface material and applying energy. This results in an ultrasonically formed elevated surface irregularity, or an ultrasonic forging splash, which useful as an electrical contact pad for permanent and semipermanent electrical connections.
REFERENCES:
patent: 3589000 (1971-06-01), Galli
patent: 3883945 (1975-05-01), Wallis
patent: 3918144 (1975-11-01), Mimata et al.
patent: 4177665 (1979-12-01), Schurmann
patent: 5116228 (1992-05-01), Kabeshita et al.
patent: 5118370 (1992-06-01), Ozawa
Cromar Larry D.
Farnworth Warren M.
Hembree David R.
Wood Alan G.
Jones David
Micro)n Technology, Inc.
Protigal Stanley N.
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