Electrical tool

Details Electrical tool Electrical tool

2008-04-08

2008-04-08

Le, Dang (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

Reexamination Certificate

active

11401227

ABSTRACT:
In the portable electrical circular saw (electrical tool) in which a commutator motor (permanent magnet motor) is mounted in a motor case (housing) which is integrally formed in a tube shape, the commutator motor includes a stator fixed to an inner circumferential surface of the motor case and a rotor which is rotatably disposed in the stator, and a plate having a plurality of protrusions is disposed on at least one of the both axial ends of a rotor core of the rotor, an outer diameter of at least two protrusions of the plate is larger than an outer diameter of the rotor core and smaller than an inner diameter of the stator.

REFERENCES:
patent: 4955128 (1990-09-01), Sogabe et al.
patent: 7064467 (2006-06-01), Yokota et al.
patent: 2004-080969 (2004-03-01), None
patent: 2004-254394 (2004-09-01), None
patent: 2006-115666 (2006-04-01), None

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