Stepping motor having rotational and counter rotational magnetic

Details Stepping motor having rotational and counter rotational magnetic Stepping motor having rotational and counter rotational magnetic

1975-05-19

1977-04-19

Rubinson, Gene Z.

Electricity: motive power systems

Open-loop stepping motor control systems

H02K 3700

Patent

active

040191109

ABSTRACT:
A stepping motor having a rotor bearing a font or character retaining wheel inductively coupled to a stator and powered by polyphase pulse power to produce a rotational magnetic field and a rotational torque upon the rotor, the stator also being powered during character selection by polyphase counter rotational magnetic field to produce a counter rotational torque for substantially instantaneous braking action upon the rotor. Means are provided for actuating the character fonts of the print wheel for rapid impact character printing. Auxiliary electro-mechanical braking may also be utilized as back-up and is controlled by the same system.

REFERENCES:
patent: 3297927 (1967-01-01), Blakeslee et al.
patent: 3573589 (1971-04-01), Berry
patent: 3636429 (1972-01-01), Jakubowski et al.
patent: 3648144 (1972-03-01), Rosen
patent: 3684934 (1972-08-01), Loyzim
patent: 3798526 (1974-03-01), Takahashi et al.
patent: 3849714 (1974-11-01), Goretzki et al.
patent: 3864615 (1975-02-01), Williams

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