Title: Method for forming a magnet pattern on magnetic memory circuit cards

Abstract: A sheet of magnetic material is placed over a surface of a malleable carrier and stuck with a multi-projectioned punch. Each projection of the punch removes a wafer of the magnetic material from the sheet of magnetic material, and embeds the wafer into the carrier to form a pattern of magnetic material wafers in the surface of the carrier. The carrier is then positioned, wafer bearing side down, over an adhesive coated surface of a substrate, and a surface of the carrier, opposite from the wafer bearing surface, is struck with a multiprojectioned punch to force with each projection an individual one of the wafers out of the surface of the carrier and into the adhesive on the substrate. The malleable carrier is then peeled from the adhesive coated surface of the substrate and from the wafers secured thereto, to leave on the surface of the substrate the pattern of magnetic material wafers.

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Inventors: Elarde, Paul F. (Naperville, IL, US)
Klasek, F. A. (LaGrange Park, IL, US)
McCormick, George O. (LaGrange, IL, US)

Application Number: 476118
Filing Date: 1974-06-03
Publication_date: 1976-01-13
Assignee: Western Electric Company, Inc. (New York, NY)
Primary Class(es): 156/249 29/432, 29/604, 29/609, 29/846, 83/51, 156/252, 156/261, 156/265, 156/293, 156/298, 156/581, 174/259, 174/260, 428/900, 428/901
Other Classes:
US Patent Ref:

2033553	Mar, 1936	Scholl	156/261.
2367490	Jan, 1945	Ducklo	156/265.
2969300	Jan, 1961	Franz	156/233.
3301730	Jan, 1967	Spiwak et al.	156/267.
3547724	Dec, 1970	Zagusta	156/253.
3554832	Jan, 1971	Fische, Jr.	156/241.
3678577	Jul, 1972	Weglin et al.	156/251.
3809597	May, 1974	Connett	156/241.
3847700	Nov, 1974	Dalal	156/252.

Other Refs:
Primary Examiner: Powell, William A.
Assistant Examiner: Bokan, Thomas
Attorney: Lloyd; R. A.