Brush holder for dynamoelectric machines
AssigneeUnited Technologies Electro Systems, Inc.
InventorKenneth W. Stewart, Sr.
Life of this patent
Estimating the term…
Abstract
A dynamoelectric machine including a brush holder for positioning the brushes in a mounting position is disclosed. The brush holder includes a displaceable section located to secure the brushes in a mounting position and said displaceable section being separated during assembly to allow the brushes to be displaced inwardly to engage the commutator in the final assembled position. Several embodiments of displaceable sections are disclosed.
Claims10
A dynamoelectric machine of the type having brushes that contact a commutator positioned on an armature shaft of an armature which comprises:
- a brush holder for positioning at least one brush to engage the commutator, said brush holder including an integral displaceable section defined by slots formed in the brush holder and secured to the remainder of the brush holder by tabs, said displaceable section being positioned to secure the brush in a mounting position, and said displaceable section being configured to define an opening for the receipt of the armature shaft and to be contacted by a portion of the commutator whereby contact with the commutator acts to displace the tabs securing the displaceable section and to displace the displaceable section thereby releasing the brush to engage the commutator.
A brush holder member for a dynamoelectric machine having an armature including an armature shaft and a commutator formed to provide at least one cavity for receiving and positioning a brush with respect to the commutator, which comprises a washer portion formed from a portion of the brush holder, the outer circumference of which extends over a portion of the cavity to prevent movement of the brush toward a center position and said washer portion being secured to the remainder of the brush holder member by breakaway tabs, whereby contact of the armature with the washer portion breaks the tabs separating the washer portion from brush holder thereby releasing the brushes.
Dependencies are inferred from the claim text.