Metal working – Method of mechanical manufacture – Electrical device making
Patent
1975-09-18
1976-07-27
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
29605, 336 60, 336200, 336220, 336225, 340174MA, 340174TF, H01F 4106
Patent
active
039711269
ABSTRACT:
A magnetic field drive coil arrangement includes a hollow rectangular coil form having a pair of rectangular openings at opposite lengthwise ends of the form, a first coil wound around the coil form such that the turns of the coil in the central region of the coil form are parallel to the longitudinal axis and a second coil wound over the central portion of the first coil. The portion of the turns of the first coil which are between the access openings and the second coil curve away from the longitudinal axis of the coil form so as not to interfere with the access openings. The access openings facilitate the access to the cylindrical domain memories disposed within the coil form and the flow of a coolant through the form. Advantageous methods of fabricating the coil arrangement are described.
REFERENCES:
patent: 2240606 (1941-05-01), Bobb
patent: 2562394 (1951-07-01), Schlesinger
patent: 2830212 (1958-04-01), Hanlet
"Magnetic Bubble Domain Electronic Package", by M. Zipay, IBM Tech. Disclosure Bull., vol. 16, No. 7, Dec., 1973, pp. 2129-2130.
GTE Laboratories Incorporated
Hall Carl E.
Hart Leslie J.
Kriegsman Irving M.
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