Machine for testing planar magnetic film with magnetic bubbles
US4360775A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1980 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | May 29, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/003
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Machine for testing planar magnetic film with magnetic bubbles and which comprises a testing device and a magnetic head, wherein the magnetic head incorporates two polarization coils in the Helmholtz position and whereof the common axis is normal to the plane of the magnetic film and two flat coils whose axes are perpendicular to one another and parallel to the plane of the magnetic film, the first of the polarization coils being arranged within the flat coils which are themselves arranged one within the other and on the same side of the magnetic film, while the test device and the second polarization coil are arranged on the other side of the magnetic film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.