Dynamic magnetic information storage or retrieval – Head – Plural gaps
Patent
1975-09-22
1978-09-19
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Head
Plural gaps
29603, 360122, 360125, G11B 514, G11B 522, G11B 528
Patent
active
041158270
ABSTRACT:
A transducer core having a magnetic core defining a non-magnetic gap and being integrally joined with a superposed composite body. The composite body has a nonmagnetic front portion spanning the nonmagnetic gap and a contiguous magnetic back portion. The superposed core and body are provided with overlapping grooves forming a window adapted to receive transducer windings.
A method of manufacturing a magnetic transducer is provided wherein two complementary blocks of magnetic material are bonded together to define a nonmagnetic gap therebetween. A confronting surface of one of the blocks is grooved prior to bonding. The resulting magnetic block is sliced into a plurality of magnetic cores. A second magnetic block is provided with a longitudinal groove along one side thereof which side is bonded to a nonmagnetic block. The resulting composite block is sliced into a plurality of composite bodies, each comprising a nonmagnetic front portion and a magnetic back portion. Each magnetic core is superposed with a composite body and bonded thereto with the nonmagnetic gap spanned by the nonmagnetic front portion and with the respective grooves overlapping. The exposed planar surface of the superposed magnetic core is lapped until its width is reduced to a desired track width.
REFERENCES:
patent: 3187410 (1965-06-01), Duinker et al.
patent: 3303292 (1967-02-01), Bedell, Jr. et al.
patent: 3354540 (1967-11-01), Duinker
patent: 3495325 (1970-02-01), Bos et al.
patent: 3597836 (1971-08-01), Osaka
patent: 3845550 (1974-11-01), Gooch et al.
patent: 3846840 (1974-11-01), Childers et al.
IBM Tech. Disc. Bull., Nystrom et al., Fabrication of Ferrite Recording Heads, vol. 12, No. 7, Nov. 1969, pp. 965-966.
Ampex Corporation
Eddleman Alfred H.
LandOfFree
Magnetic transducer for narrow track recording and playback does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic transducer for narrow track recording and playback, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic transducer for narrow track recording and playback will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2122812