Automotive engine starter and electric rotary machine...

Electrical generator or motor structure – Dynamoelectric – Rotary

Reexamination Certificate

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Details

C310S233000, C310S235000, C310S236000, C310S237000

Reexamination Certificate

active

07608956

ABSTRACT:
An electric rotary machine which may be employed as a dc motor in an automotive engine starter. The motor includes an armature equipped with an armature shaft, a commutator, brushes, and a bearing retaining an end of the armature shaft. The surface of the commutator has a plurality of protrusions extending in parallel to each other in a direction of rotation of the commutator. Each of the brushes has formed in the bottom thereof grooves in which the protrusions of the commutator are fit. The brushes are urged into constant engagement of the grooves with the protrusions on the commutator to establish electrical contacts between the brushes and the commutator and minimize movement of the armature shaft relative to the bearing.

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Notification of Reasons for Rejection for JP-2005-177203, with English translation, May 19, 2009, p. 1-3, Japan.

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