US5329198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip ring or commutator motor
Assignee: Siemens AG
•
Filing: 1992-01-10
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Granted: 1994-07-12
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Expires: 2012-01-10
Abstract
Abstract In order to be able to ensure with low outlay a slip ring or commutator motor having a high level of freedom from noise and good running quality at maximum power, despite unavoidable deviations from circularity of the slip ring or commutator ground by the brushes abutting thereon, it is proposed according to the invention that the brushes (6; 7; 8) be supported such that they can pivot about an axis which runs radially in the vicinity of the surface and axially essentially in the axial direction of the commutator (1) or slip ring; that, according to one embodiment, the axis be formed by a guide pin (31; 41), which is retained in a brush housing (2) at least partially embracing the brush (6; 7) in the vicinity of the surface of the commutator (1) or the slip ring, and which is plugged axially through a guide slot (61; 71) running in the compression direction of the brush and open towards the surface of the slip ring or commutator (1), or that the brush (6) be tangentially embraced externally by the brush compression spring (3a) in the sense of a support with tangential supporting parts (33a; 34a), which can pivot.
Inventors
- 👤 Helmut Schmidt
- 👤 Kurt Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:39
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/40; H01R39/381
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
169 words
A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising: a brush including: a stator side; a top surface; and a bottom surface, and being pivotable about an axis parallel to the one of the commutator's axis and the slip ring's axis; a brush compression spring, exerting a force pressing the brush's bottom surface against an edge surface of the one of the commutator and the slip ring and being pivotable about an axis parallel to the one of the commutator's rotation axis and the slip ring's rotation axis; a guide pin; and a brush housing holding the guide pin and at least partially embracing the brush wherein the brush includes a slot open to an edge surface of the commutator and running in the direction of the force exerted by the brush compression spring, wherein said guide pin is sized to be inserted into said slot.
Claim 2
Dependent Claim
169 words
A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising: a brush including: a stator side; a top surface; and a bottom surface, and being pivotable about an axis parallel to the one of the commutator's axis and the slip ring's axis; a brush compression spring, exerting a force pressing the brush's bottom surface against an edge surface of the one of the commutator and the slip ring and being pivotable about an axis parallel to the one of the commutator's rotation axis and the slip ring's rotation axis; a guide pin; and a brush housing holding the guide pin and at least partially embracing the brush wherein the brush includes a slot open to an edge surface of the commutator and running in the direction of the force exerted by the brush compression spring, wherein said guide pin is sized to be inserted into said slot.
Claim 3
Dependent Claim
35 words
The brush assembly as claimed in claim 1, wherein the brush housing has a wall axially embracing the brush, and having at least one axially running insertion hole, said insertion hole retaining the guide pin.
Claim 4
Dependent Claim
44 words
The brush assembly as claimed 1, wherein the brush housing has a wall axially embracing the brush, and having at least one insertion slot open to the one of the commutator's edge surface and the slip ring's edge surface and retaining the guide pin.
Claim 5
Dependent Claim
20 words
The brush assembly as claimed in claim 1 wherein the guide pin is integrally formed with the brush compression spring.
Claim 6
Dependent Claim
40 words
The brush assembly as claimed in claim 4, wherein the brush compression spring has a compression end abutting the top surface of the brush at a point, thereby transferring the pressing force from the brush compression spring to the brush.
Claim 7
Dependent Claim
53 words
The brush assembly as claimed in claim 4, wherein the brush compression spring has a compression end abutting the top surface of the brush along a line parallel to the one of the slip ring's axis and the commutator's axis, thereby transferring the pressing force from the brush compression spring to the brush.
Claim 8
Dependent Claim
50 words
The brush assembly as claimed in claim 6, wherein the brush's top surface has a longitudinal slot being parallel with the one of the axis of the slip ring and the axis of the commutator such that the compression end of the brush compression spring fits into said longitudinal slot.
Claim 9
Dependent Claim
36 words
The brush assembly as claimed in claim 6, wherein the compression end of the brush compression spring axially fixes the brush parallel to the edge surface of the one of the slip ring and the commutator.
Claim 10
Dependent Claim
26 words
The brush assembly as claimed in claim 8 further comprising a stator part rotatably holding a free end of the guide pin located outside the brush.
Claim 11
Dependent Claim
26 words
The brush assembly as claimed in claim 8 further comprising a stator part fixedly holding a free end of the guide pin located outside the brush.
Claim 12
Dependent Claim
71 words
The brush assembly as claimed in claim 8 further comprising a stator part having a stop part pivotably housing a free end of the guide pin located outside the brush such that the free end of the guide pin may pivot through an angle corresponding to a pivoting movement of the brush wherein the stop part of the stator part limits the movement of the free end of the guide pin.
Claim 13
Dependent Claim
150 words
A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising: a brush including: a stator side; a top surface; and a bottom surface, and being pivotable about an axis parallel to the one of the commutator's axis and the slip rings's axis; a guide pin; and a brush compression spring exerting a force pressing the brush's bottom surface on an edge surface of the one of the commutator and the slip ring, and a pivotably holding the brush; wherein the brush is provided with a slot, open to an edge surface of the one of the commutator and the slip ring, and running in the direction of the force exerted by the brush compression spring, and wherein the guide pin is sized to be inserted into said slot.
Claim 14
Dependent Claim
150 words
A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising: a brush including: a stator side; a top surface; and a bottom surface, and being pivotable about an axis parallel to the one of the commutator's axis and the slip rings's axis; a guide pin; and a brush compression spring exerting a force pressing the brush's bottom surface on an edge surface of the one of the commutator and the slip ring, and a pivotably holding the brush; wherein the brush is provided with a slot, open to an edge surface of the one of the commutator and the slip ring, and running in the direction of the force exerted by the brush compression spring, and wherein the guide pin is sized to be inserted into said slot.
Claim 15
Dependent Claim
19 words
The brush assembly as claimed in claim 9 or 10 wherein the stator part is a plastic brush holder.
Claim 16
Dependent Claim
19 words
The brush assembly as claimed in claim 9 or 10 wherein the stator part is a plastic bearing plate.
Claim 17
Dependent Claim
17 words
The brush assembly as claimed in claim 11 wherein the stator part is a plastic brush holder.
Claim 18
Dependent Claim
17 words
The brush assembly as claimed in claim 11 wherein the stator part is a plastic bearing plate.
Claim 19
Dependent Claim
121 words
A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising: a brush including: a stator side; a top surface; and a bottom surface; and holders, pivotably supporting the brush about an axis parallel to the one of the commutator's rotation axis and the slip ring's rotation axis; and a single-piece stamped and bent part including: a brush compression spring exerting a force pressing the brush's bottom surface against an edge surface of the one of the slip ring and the commutator; and a brush box including integrally formed pivoting holders and engaging the brush's holders to hold the brush.
Claim 20
Dependent Claim
121 words
A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising: a brush including: a stator side; a top surface; and a bottom surface; and holders, pivotably supporting the brush about an axis parallel to the one of the commutator's rotation axis and the slip ring's rotation axis; and a single-piece stamped and bent part including: a brush compression spring exerting a force pressing the brush's bottom surface against an edge surface of the one of the slip ring and the commutator; and a brush box including integrally formed pivoting holders and engaging the brush's holders to hold the brush.
Claim 21
Dependent Claim
163 words
A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising: a brush including: a stator side; a top surface; a bottom surface; a front surface; a back surface; and a side surface opposite said stator side, and being pivotable about an axis parallel to the rotation axis of the one of the slip ring and the commutator; a brush compression spring including, retaining parts projecting from an area adjacent to the brush's stator side; and tangential supporting parts abutting the brush's front and back surfaces in a vicinity of the one of the slip ring and the commutator, said tangential supporting parts also being parallel to the axis of the one of the commutator and the slip ring exerting a force, and pressing the brush's bottom surface against an edge surface of the one of the slip ring and the commutator.
Claim 22
Dependent Claim
163 words
A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising: a brush including: a stator side; a top surface; a bottom surface; a front surface; a back surface; and a side surface opposite said stator side, and being pivotable about an axis parallel to the rotation axis of the one of the slip ring and the commutator; a brush compression spring including, retaining parts projecting from an area adjacent to the brush's stator side; and tangential supporting parts abutting the brush's front and back surfaces in a vicinity of the one of the slip ring and the commutator, said tangential supporting parts also being parallel to the axis of the one of the commutator and the slip ring exerting a force, and pressing the brush's bottom surface against an edge surface of the one of the slip ring and the commutator.
Claim 23
Dependent Claim
49 words
The brush assembly as claimed in claim 18 wherein the brush compression spring further includes, a compression part abutting the top surface of the brush, thereby transferring a pressing force from the brush compression spring to the brush; and axial securing parts abutting the side surface of the brush.
Claim 24
Dependent Claim
35 words
The brush assembly as claimed in claim 19 further comprising: a stator part holding the retaining parts of the brush compression spring and axially securing the brush by contacting the stator side of the brush.
Claim 25
Dependent Claim
42 words
The brush assembly as claimed in claim 19 wherein a single-piece brush compression spring produced from a continuous brush wire includes at least one of the following: the retaining parts; the tangential supporting parts; the axial securing parts; and the compression part.
Claim 26
Dependent Claim
67 words
The brush assembly as claimed in claim 20 wherein the retaining parts of the brush compression spring include two brush wire ends firmly fixed in the stator part, and wherein the brush compression spring further comprises spring parts, each being located between the axial securing parts and the compression part and each being elastically deformable about a pivoting axis such that the brush compression spring is pivotable.
Claim 27
Dependent Claim
70 words
The brush assembly as claimed in claim 20 wherein the stator part further comprises an axial opening open to the one of the commutator and the slip ring and wherein the retaining parts are inserted into the axial opening of the stator part and are self-clamping hooks, each of said clamping hooks being located on an end of each retaining part and being bent against a direction of an insertion.
Claim 28
Dependent Claim
72 words
The brush assembly as claimed in claim 20 wherein the stator part further comprises an axial opening open to the one of the commutator and the slip ring and wherein the retaining parts are inserted into the axial opening of the stator part and are self-latching via latching hooks, each of said latching hooks being located on an end of each retaining part and being bent against a direction of the insertion.
Claim 29
Dependent Claim
45 words
The brush assembly as claimed in claim 19 wherein the axial securing parts about the side surface of the brush in a vicinity of the edge surface of the one of the slip ring and the commutator thereby axially securing a position of the brush.
Claim 30
Dependent Claim
27 words
The brush assembly as claimed in claim 20 wherein the stator contacts the stator side of the brush in a region adjacent to axially projecting starting cams.
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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) | 1997-07-11 | 1998-01-10 | 1998-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-11 | 2002-01-10 | 2002-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-11 | 2006-01-10 | 2006-07-12 | $7700.00 | Window Closed / Lapsed |