Electricity: measuring and testing – Magnetic – Magnetic recording medium on magnetized object records...
Patent
1981-06-19
1984-05-08
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Magnetic recording medium on magnetized object records...
324226, 324262, G01N 2785, G01R 3310
Patent
active
044477783
ABSTRACT:
Method and apparatus for magnetographic testing of magnetizable test pieces including pressing a magnetic storage tape upon the test piece, magnetizing the test piece thereof while the tape is being pressed against the test piece surface, removing the tape and scanning the tape by means of a probe which responds to magnetic forces to detect any stored defect stray fluxes.
REFERENCES:
patent: 2665333 (1954-01-01), Dunipace et al.
patent: 2764733 (1956-09-01), Forest
patent: 3430133 (1969-02-01), Greiner et al.
patent: 3513555 (1970-05-01), Vachon
patent: 3528002 (1970-09-01), Dunleavy
patent: 4063157 (1977-12-01), Lorenzi et al.
Institut Dr. Friedrich Forster Prufgeratebau
Netter George J.
Strecker Gerard R.
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