Electricity: motive power systems – Alternating current commutating motors – Universal or a.c.-d.c. motors
Patent
1979-09-24
1981-02-10
Witkowski, Stanley J.
Electricity: motive power systems
Alternating current commutating motors
Universal or a.c.-d.c. motors
318365, 318379, 318247, H02P 306
Patent
active
042504368
ABSTRACT:
A universal series motor having its brushes shifted at an angle against the direction of rotation is provided with a braking arrangement which removes power from the field windings and applies power directly to the armature winding.
REFERENCES:
patent: 2930957 (1960-03-01), Cronberger
patent: 4139808 (1979-02-01), Matsumura
Bell Edward L.
Davis David L.
Redman John W.
Smith Robert E.
The Singer Company
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