Tape recorder having magnetically controlled tape tensioning

Details Tape recorder having magnetically controlled tape tensioning Tape recorder having magnetically controlled tape tensioning

1978-08-02

1979-07-24

Christian, Leonard D.

Winding, tensioning, or guiding

Reeling device

Fishing rod reel

242 755, G03B 104

Patent

active

041620518

ABSTRACT:
A load survey tape recorder has a tape transport assembly including a supply spindle assembly having a magnetic brake and a take-up spindle assembly having a magnetic clutch. Substantially constant tensions are maintained in a recording tape as it is driven between supply and take-up reels by the magnetic retarding forces of the magnetic brake and by a variable magnetic drive coupling of the magnetic clutch. A non-magnetic spacer is placed in one or both of the magnetic coupling gaps of the brake and clutch for improved operation.

REFERENCES:
patent: 2746691 (1956-05-01), Hoad
patent: 2969200 (1961-01-01), Selsted
patent: 3584250 (1971-06-01), Bottani
patent: 3602458 (1971-08-01), Doby et al.
patent: 3636277 (1972-01-01), Pohler
patent: 3809336 (1974-05-01), Kollar et al.
patent: 3913129 (1975-10-01), Snyder et al.
patent: 3967790 (1976-01-01), Hess

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