Rotary magnetic head assembly

Details Rotary magnetic head assembly Rotary magnetic head assembly

1978-09-05

1980-07-01

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 520

Patent

active

042109450

ABSTRACT:
According to the invention, the rotary magnetic head assembly comprises a current-conducting housing which accommodates magnetic heads and a contactless signal transformer device. The magnetic heads are mounted on a holder secured on a hollow shaft. The contactless signal transformer device comprises a rotor mounted on the holder and a stator spaced at a certain distance from the rotor. The rotor and stator cores are closed magnetic circuits with helical windings. The center of each turn of said windings is on a circumference matched with the center line of each of the closed magnetic circuits. The hollow shaft accommodates a current-conducting element joined to the bottom and the lid of the housing so that the lid, walls and bottom of the housing and said current-conducting element make up a closed spatial coupling loop of the rotor and stator windings. The closed magnetic circuits of the rotor and stator encompass the current-conducting element.

REFERENCES:
patent: 4031558 (1977-06-01), Kusaka

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