Displacing apparatus

Details Displacing apparatus Displacing apparatus

1970-12-29

1976-01-27

Dobeck, Benjamin

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318398, H02P 104

Patent

active

039355217

ABSTRACT:
Apparatus for advancing magnetic tape with respect to a recording head through small, discrete, and uniform displacement increments. A direct current drive motor has an armature shaft that drives a displaceable member. Controls develop signals that energize and deenergize the motor. Included in these controls are a speed responsive tachometer and an acceleration control utilizing a saturable amplifier.

REFERENCES:
patent: 3137453 (1964-06-01), Wooldridge
patent: 3158426 (1964-11-01), Doersam et al.
patent: 3167777 (1965-01-01), Zagorites et al.
patent: 3185364 (1965-05-01), Kleist
patent: 3326440 (1967-06-01), Barnes et al.

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