Magnetic sensor having a hollow housing sealed with a shield cap

Details Magnetic sensor having a hollow housing sealed with a shield cap Magnetic sensor having a hollow housing sealed with a shield cap

1977-02-10

1978-09-26

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Head

360122, 360123, 360129, G11B 522, G11B 520, G11B 510

Patent

active

041175239

ABSTRACT:
A magnetic sensor includes a housing in which flux producing means which comprises an electromagnet or a permanent magnet is received. A pair of magnetoelectric transducer elements are secured to a surface of the flux producing means which represents a magnetic pole, with a given spacing between the elements. In order to dispose the magnetoelectric transducer elements as close as possible to the outer surface of the housing, the latter is formed with a through opening at a corresponding position. The through opening is covered by a thin shield cap to protect the magnetoelectric transducer elements from a member being detected which is passed in sliding contact with or very close to the outer surface of the housing and to provide an enclosed construction for the housing.

REFERENCES:
patent: 3143714 (1964-08-01), Evans et al.
patent: 3209078 (1965-09-01), Neuman
patent: 3493694 (1970-02-01), Hunt
patent: 3495048 (1970-02-01), Gooch
patent: 3527899 (1970-09-01), Oliver et al.
patent: 3710360 (1973-01-01), Flachsbarth

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