US3864803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge brush holder
Assignee: General Electric Co
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Filing: 1974-02-14
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Granted: 1975-02-11
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Expires: 1994-02-14
Abstract
Abstract The disclosed invention is a device for mounting and maintaining collector ring brushes in a dynamoelectric machine. The device includes a brush box attached to a bus ring and a removable brush holder insertable therein. The brush holder is a U-shaped member having inwardly biased resilient legs which positively engage the brush during maintenance operations. As the brush holder is inserted into the brush box, the resilient legs engage the brush box and are spread to release the brush within the brush box.
Inventors
- 👤 Harry O Ohmstedt
- 👤 William H Ruth
- 👤 Edward E Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:56
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/383; H01R39/381; H01R39/41; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T29/53143
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
73 words
A device for mounting and removing an electrically conductive brush adjacent a dynamoelectric machine rotating part; the device comprising: a U-shaped brush holder including a pair of inwardly biased resilient legs for gripping a brush therebetween; a brush box attached to the dynamoelectric machine adjacent the rotating parts; and, means for biasing apart the brush holder legs as it is inserted into the brush box to release the brush into the brush box.
Claim 2
Independent Claim
73 words
A device for mounting and removing an electrically conductive brush adjacent a dynamoelectric machine rotating part; the device comprising: a U-shaped brush holder including a pair of inwardly biased resilient legs for gripping a brush therebetween; a brush box attached to the dynamoelectric machine adjacent the rotating parts; and, means for biasing apart the brush holder legs as it is inserted into the brush box to release the brush into the brush box.
Claim 3
Dependent Claim
53 words
The device recited in claim 1 wherein the brush box includes a rectangular portion having at least two opposite slotted walls and the means for biasing apart the brush holder legs include: outwardly divergent ramps in each of the slotted walls for engaging the brush holder legs during insertion into the brush box.
Claim 4
Dependent Claim
35 words
The device recited in claim 2 wherein the brush holder further includes an outwardly divergent portion at the free end of each leg for engaging the outwardly divergent ramps of the brush box slotted walls.
Claim 5
Dependent Claim
21 words
The device recited in claim 1 wherein the brush holder legs include inwardly extending teeth for gripping an electrically conductive brush.
Claim 6
Dependent Claim
50 words
The device recited in claim 1 wherein the brush holder includes a clip defined by a pair of outwardly extending tabs; and, the brush box includes an elongated portion having a pair of slots formed therein for receiving the tabs when the brush holder is seated in the brush box.
Claim 7
Dependent Claim
33 words
The device recited in claim 1 wherein the brush holder includes a first electrical connector and the brush box includes a second electrical connector, the first and second electrical connectors being slidably attachable.
Claim 8
Dependent Claim
15 words
The device recited in claim 1 wherein the brush holder includes a detachable insulated handle.
Claim 9
Dependent Claim
33 words
The device recited in claim 1 wherein the brush holder includes a spring for biasing the brush to the dynamoelectric machine rotating part after the brush is released from the brush holder legs.
Claim 10
Independent Claim
90 words
A device for mounting and removing an electrically conductive brush adjacent a dynamoelectric machine rotating part comprising: a U-shaped brush holder including a pair of inwardly biased legs for gripping a brush therebetween; each leg having a free end terminating in an outwardly divergent portion; and, a brush box attached, to the dynamoelectric machine, including a rectangular portion for receiving a brush therein; slots formed in the rectangular portion including outwardly divergent ramps adapted to engage the brush holder outwardly divergent portions for releasing the brush from the brush holder.
Claim 11
Independent Claim
90 words
A device for mounting and removing an electrically conductive brush adjacent a dynamoelectric machine rotating part comprising: a U-shaped brush holder including a pair of inwardly biased legs for gripping a brush therebetween; each leg having a free end terminating in an outwardly divergent portion; and, a brush box attached, to the dynamoelectric machine, including a rectangular portion for receiving a brush therein; slots formed in the rectangular portion including outwardly divergent ramps adapted to engage the brush holder outwardly divergent portions for releasing the brush from the brush holder.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |