US4774754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Displaceable brush holder for dynamoelectric machine assembly
Assignee: Motors Acquisition Corp
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Filing: 1987-06-17
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Granted: 1988-10-04
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Expires: 2007-06-17
Abstract
Abstract A dynamoelectric machine including a brush holder having a displaceable section for positioning the brushes in a mounting position is disclosed. The displaceable section is 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.
Inventors
- 👤 Kenneth W. Stewart, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:04
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/148; H01R43/00; H01R43/12; H02K2205/00; H02K2205/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
A method of assembling a dynamoelectric machine of the type having a housing and brushes that engage a commutator located on an armature having an armature shaft which comprises the steps of: securing a brush holder to the housing, said brush holder having at least one brush mounted for reciprocating movement, said brush holder including a brush spring for urging the brush in a first direction and an integral displaceable section formed as a portion of the brush holder extending to engage the brush to prevent further movement in the first direction; inserting the armature and armature shaft into the housing; displacing the armature against the displaceable section of the brush holder to the final assembled position of the armature, said armature separating the displaceable section from the remainder of the brush holder thereby allowing the brush spring to urge the brush inwardly against the commutator of the armature.
Claim 2
Independent Claim
149 words
A method of assembling a dynamoelectric machine of the type having a housing and brushes that engage a commutator located on an armature having an armature shaft which comprises the steps of: securing a brush holder to the housing, said brush holder having at least one brush mounted for reciprocating movement, said brush holder including a brush spring for urging the brush in a first direction and an integral displaceable section formed as a portion of the brush holder extending to engage the brush to prevent further movement in the first direction; inserting the armature and armature shaft into the housing; displacing the armature against the displaceable section of the brush holder to the final assembled position of the armature, said armature separating the displaceable section from the remainder of the brush holder thereby allowing the brush spring to urge the brush inwardly against the commutator of the armature.
Claim 3
Dependent Claim
50 words
The method as set forth in claim 1 wherein the displaceable section defines a center opening sized to receive the armature shaft and wherein the step of displacing separates the displaceable section from the brush holder and positions the displaceable section to act as a thrust washer for the armature.
Claim 4
Dependent Claim
41 words
The method as set forth in claim 1 wherein the displaceable section defines at least one breakaway section and wherein the step of displacing causes the breakaway section to be separated from the brush holder and to drop within the housing.
Claim 5
Dependent Claim
51 words
The method as set forth in claim 1 wherein the displaceable section defines a finger including a projection for securing the brush in position and wherein the step of displacing further comprises engaging and displacing the finger to allow the brush to be urged against the commutator by the brush spring.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |