Motor providing oscillating action for a personal care...

Details Motor providing oscillating action for a personal care... Motor providing oscillating action for a personal care...

2007-01-02

2007-01-02

Mullins, Burton S. (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Oscillating

C310S038000

Reexamination Certificate

active

10873564

ABSTRACT:
The motor assembly which produces an oscillating action for a personal care device includes a horizontally positioned U-shaped stator portion, and an armature portion which includes a torsion spring shaft which is anchored at one end thereof. The armature portion also includes a U-shaped magnet mounting member which is fixed near the upper end of the spring shaft, the U-shaped member including two opposing legs which extend along a substantial part of the length of the spring shaft, away therefrom. At the tips of each leg are magnet assemblies, which interact with the stator portion in alternating torsion, to produce a back-and-forth oscillation of the armature and a brushhead or other workpiece attached thereto.

REFERENCES:
patent: 3192488 (1965-06-01), Faith et al.
patent: 6833639 (2004-12-01), Lau et al.
patent: 6845537 (2005-01-01), Wong
patent: 2004/0119344 (2004-06-01), Lau et al.

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