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Patent Searching and Data


Title:
DIRECT CURRENT MOTOR
Document Type and Number:
WIPO Patent Application WO/2000/057532
Kind Code:
A2
Abstract:
A motor includes a shaft, at least one bearing, a rotor, a stator, and a brush carrier. The bearing is located adjacent to the shaft. The rotor is interconnected to the shaft and magnetically interacts with the stator. The brush carrier is releasably interconnected to the rotor and/or stator such that the brush carrier can mechanically disconnect from the rotor and/or stator without disturbing a bearing and other motor elements. By disconnecting the brush carrier from an endbell and viewing the commutator surfaces through an endbell aperture, the commutator surfaces of the motor are inspected. Since more than one winding portion of the armature can act as a commutating surface, motor assembly is simplified and the motor has a long useful life. A motor including more than one brush carrier is also provided. Each brush carrier is releasably interconnected to the rotor and/or stator such that either brush carrier can be mechanically disconnected from the rotor and/or stator without disturbing other motor elements.

Inventors:
FIORENZA JOHN
JESKE ALLEN
BELKIN FELIX
Application Number:
PCT/US2000/005952
Publication Date:
September 28, 2000
Filing Date:
March 07, 2000
Export Citation:
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Assignee:
BRIGGS & STRATTON CORP (US)
International Classes:
H01R39/00; H02K3/04; H02K5/14; H02K5/18; H02K5/20; H02K5/22; H02K9/04; H02K9/06; H02K9/22; H02K9/28; H02K13/00; H02K13/08; H02K23/54; H02K5/10; H02K5/173; (IPC1-7): H02K/
Domestic Patent References:
WO1995017779A21995-06-29
Foreign References:
US4347455A1982-08-31
FR2438935A11980-05-09
US1416256A1922-05-16
US5757095A1998-05-26
US5172465A1992-12-22
US5487213A1996-01-30
EP0309076A21989-03-29
DE9305152U11993-06-03
US4769572A1988-09-06
US4910790A1990-03-20
DE19642665A11998-04-23
GB2222320A1990-02-28
US5608280A1997-03-04
US5095236A1992-03-10
US5659211A1997-08-19
US5689148A1997-11-18
US4593220A1986-06-03
EP0398610A21990-11-22
US5650676A1997-07-22
FR2726701A11996-05-10
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02, 29 February 1996 (1996-02-29) & JP 07 288952 A (MATSUSHITA ELECTRIC IND CO LTD), 31 October 1995 (1995-10-31)
Attorney, Agent or Firm:
Laska, Casimir F. (WI, US)
Download PDF:
Claims:
What is Claimed is:
1. A motor apparatus, comprising: a shaft; at least one bearing adjacent said shaft; a rotor interconnected to said shaft; a stator disposed to magnetically interact with said rotor, and at least one of said rotor and said stator including at least one winding; and a brush carrier; said brush carrier releasably interconnected with at least one of said rotor and said stator such that said brush carrier may be mechanically disconnected from one of said rotor and said stator without disturbing said bearing.
2. The motor apparatus of claim 1 wherein at least one of said rotor and said stator comprises at least one magnet.
3. The motor apparatus of claim 1 further comprising: an endbell having at least one aperture to receive at least one brush, said aperture dimensioned to allow adjustment of said brush in at least one circumferential direction with respect to said shaft.
4. The motor apparatus of claim 1 further comprising: an endbell having at least one aperture to receive at least one brush, said aperture dimensioned to allow adjustment of said brush in at least one of a clockwise and a counterclockwise circumferential direction with respect to said shaft.
5. The motor apparatus of claim 1 further comprising: an endbell having at least one fastening slot dimensioned to allow adjustment of said brush in at least one circumferential direction with respect to said shaft.
6. The motor apparatus of claim 1 wherein said rotor has a first sidc and a second side, and wherein said bearing is disposed on the same side of said rotor as said brush carrier.
7. The motor apparatus of claim 1 further comprising: an endbell having at least one aperture to receive at least one brush, wherein said aperture allows for up to approximately five degrees of adjustment of said brush in at least one circumferential direction with respect to said shaft.
8. The motor apparatus of claim 1 wherein an end surface of said winding comprises a commutator surface.
9. The motor apparatus of claim 1 wherein said brush carrier comprises a plurality of brush holders.
10. The motor apparatus of claim 1 wherein said brush carrier further comprises a mounting boss.
11. The motor apparatus of claim 1 wherein said brush carrier comprises a plurality of brush holders, each of said brush holders at least partially surrounding at least one sleeve.
12. The motor apparatus of claim 1 further comprising an endbell interconnected to said brush carrier.
13. The motor apparatus of claim 1 wherein said brush carrier includes a plurality ofunitarily formed brush holders, each of said brush holders being disposed in a corresponding aperture in an endbell.
14. The motor apparatus of claim 1 futher comprising an endlcll having a plurality of substantially polygonal apertures.
15. The motor apparatus of claim 1 further comprising a plurality of terminals, each of said terminals being interconnected to a sidewall of said brush carrier and electrically connected to at least one brush such that said brush carrier may he removed from the motor apparatus without disturbing the terminalbrush electrical c ollnectiol1.
16. The motor apparatus of claim 1 wherein said brush carrier further comprises at least one bus bar connected in circuit with a terminal.
17. The motor apparatus of claim 1 further comprising at least one bus bar and a bus barrier, said bus barrier disposed between said bus bar and said brush carrier.
18. The motor apparatus of claim 1 wherein said brush carrier further comprises a plurality of bus bars and a bus barrier, and wherein said bus banier electrically isolates a first bus bar from a second bus bar.
19. The motor apparatus of claim 1 wherein said at least one bearing comprises a plurality of spaced bearings positioned on opposite sides of said winding.
20. The motor apparatus of claim 1 further comprising at least one bearing retainer formed unitary with an endbell.
21. The motor apparatus of claim 20 wherein said bearing retainer includes a flange that engages said bearing.
22. The motor apparatus of claim 1 further comprising an endbeli having a bearing retainer comprising a sloped wall and a flange that engages said bearing.
23. The motor apparatus of claim 1 further comprising an endbcll having an aperture, wherein at least one of said bearings is disposed in said aperture.
24. The motor apparatus of claim 1 further comprising an endbel) having at least one aperture near an axial center of said endbell.
25. The motor apparatus of claim 1 further comprising: a cover in a substantially watertight engagement with said brush carrier.
26. The motor apparatus of claim 1 further comprising: a housing substantially surrounding a portion of said shaft; and a cover having an annular edge engagable with a channel in said brush carrier.
27. The motor apparatus of claim 1 wherein said rotor further comprises : at least one first conductive portion formed on a first end surface of said at least one winding on a first side of said rotor; and at least one second conductive portion formed on a second end surface of said at least one winding on an opposite side of said rotor, such that said brush carrier may be alternately positioned adjacent to one of said first and said second end surfaces.
28. The motor apparatus of claim 27 wherein said brush carrier has at least one air channel positioned to direct airflow across at least one of said first and said second end surfaces.
29. The motor apparatus of claim 28 wherein said brush carrier further comprises at least one brush holder adjacent to said at least one air channel.
30. The motor apparatus of claim 29 wherein said at least one brush holders comprises two brush holders, wherein said at least one air channel comprises a plurality of air channels, and wherein each of said brush holders has an air access passage in fluid flow communication with an air channel.
31. The motor apparatus of claim 30 further comprising a sleeve at least partially surrounded by said brush holder, said sleeve at least partially surrounding one brush to absorb and dissipate heat radiated from said brush through said air access passage.
32. The motor apparatus of claim 28 further comprising a fan interconnected with said first shaft such that the rotation of said first shaft causes said fan to rotate.
33. The motor apparatus of claim 28 further comprising an electric fan positioned to move air through said at least one air channel.
34. The motor apparatus of claim 27 further comprising a second brush carrier positioned adjacent to one of said first and said second end surfaces.
35. The motor apparatus of claim 27 wherein said at least one first conductive portion and said at least one second conductive portion comprise commutator surfaces.
36. The motor apparatus of claim 27 wherein said at least one first conductive portion forms an approximate angle of between seventy and ninety degrees with said at least one second conductive portion.
37. The motor apparatus of claim 34 wherein each of said brush carriers further comprises at least one brush and one of said brush carriers is rotated between about seventy and ninety degrees with respect to another of said brush carriers such that each of said brushes is in alignment with one of said first and said second conductive portions.
38. The motor apparatus of claim 34 wherein at least one of said brush carriers further comprises at least one brush holder adjacent to an air channel.
39. The motor apparatus of claim 38 wherein said Urush holder has an air access passage in fluid flow communication with said air channel.
40. The motor apparatus of claim 38 further comprising a fan interconnected with said first shaft.
41. The motor apparatus of claim 39 further comprising a sleeve at least partially surrounded by said brush holder, said sleeve at least partially surrounding one brush to absorb and dissipate heat radiated from said brush through said air access passage.
42. The motor apparatus of claim 40 wherein said fan is enclosed by a housing.
43. The motor apparatus of claim 38 further comprising an electric fan positioned to move air through said air channel.
44. A motor apparatus, comprising: a shaft; a pair of spaced bearings adjacent said shaft; a rotor interconnected to said shaft between said bearings; and means for retaining at least one brush; said retaining means releasably disposed near said rotor such that said retaining means may be mechanically disconnected without disturbing said bearings.
45. The motor apparatus of claim 44 further comprising a stator disposed to magnetically interact with said rotor, wherein at least one of said stator and said rotor includes at least one winding. 4G.
46. The motor apparatus of claim 45 further comprising at least one brush connected in circuit with said winding.
47. The motor apparatus of claim 44 further comprising: a brush endbell having at least one aperture that receives at least one brush, said aperture dimensioned to allow adjustment of said brush in at least one circumferential direction with respect to said shaft.
48. The motor apparatus of claim 44 wherein one of said pair ofbearings is disposed adjacent to a side of said retaining means closest to said rotor.
49. The motor apparatus of claim 44 further comprising an endbet ! having a plurality of substantially polygonal apertures.
50. The motor apparatus of claim 44 further comprising an endbell having at least one unitary bearing retainer.
51. The motor apparatus of claim 50 wherein said bearing retainer inctudes a flange that engages said bearing.
52. The motor apparatus of claim 44 further comprising an endbcH having a bearing retainer comprising a sloped wall and a flange that engages said bearing.
53. The motor apparatus of claim 44 wherein said retaining means is unitary with an endbell.
54. The motor apparatus of claim 45 further comprising a biasing member and at least one brush, said biasing member biasing said brush toward said winding.
55. The motor apparatus of claim 44 further comprising at least one brush and a power source for delivering power to said brush.
56. A method of inspecting a commutator surface of a motor apparatus, comprising the steps of : providing a motor apparatus comprising: a shaft, at least one bearing adjacent said shaft, a rotor interconnected to said shaft, a stator disposed to magnetically interact with said rotor, wherein at least one of said rotor and said stator includes at least one winding having a commutator surface, and providing a brush carrier; at least partially disconnecting said brush carrier from an endbell R ithout disturbing said bearing, and viewing said commutator surface through at least one aperture in said endbell to inspect said commutator surface.
57. The method of claim 56 wherein said disconnection step comprises mechanically disconnecting said brush carrier from said endbell.
58. The method of claim 56 further comprising providing at least one brush interconnected with said brush carrier.
59. The method of claim 56 further comprising providing at least one brush and providing a power source electrically connected to said brush. G0.
60. The method of claim 56 further comprising the step of removing a cover from said brush carrier.
61. The method of claim 60 wherein said cover removing step includes removing said cover from said brush carrier by unfastening a single fastener.
62. The method of claim 56 further comprising the step of providing an endbell having a bearing retainer.
63. The method of claim 62 wherein said endbell providing step includes providing an endbell having a unitary bearing retainer.
64. The method of claim 56 further comprising: inspecting at least one brush interconnected with said brush carrier.
65. The method of claim 56 wherein said providing step includes providing said bearing on the same side of said rotor as said brush carrier.
66. The method of claim 56 further comprising providing an endbell having a unitary bearing retainer that retains said bearing.
67. A motor apparatus, comprising: a shaft; at least one bearing adjacent said shaft; a disk type armature having at least one winding interconnected to said shaft; at least one magnet disposed to magnetically interact with said rotor; a brush carrier; and a brush endbell having at least one aperture to receive said brush, said brush carrier releasably interconnected with said rotor such that said brush carrier may be mechanically disconnected from said rotor without disturbing said bearing.
68. The motor apparatus of claim 67 wherein said aperture is dimensioned to allow adjustment of said brush in at least one circumferential direction with respect to said shaft.
69. A motor apparatus, comprising: a shaft; a rotor interconnected to said shaft having a plurality of conductive windings forming a conductive disk; a first plurality of conductive portions formed on a first end surface of said windings on a first side of said rotor; a second plurality of conductive portions formed on a second end surface of said windings on an opposite side of said rotor; a stator disposed to magnetically interact with said rotor; and a brush carrier positioned adjacent to one plurality of said conductive portions such that said adjacent conductive portions define a commutator surface.
70. The motor apparatus of claim 69, wherein said first and said second plurality of conductive portions extend radially from said shaft.
71. The motor apparatus of claim 69, wherein said first and said second plurality of conductive portions are equidistant from said shaft.
72. The motor apparatus of claim 69, wherein each of said first and said second plurality of conductive portions align with said brush carrier when adjacent to said brush carrier.
73. The motor apparatus of claim 69 further comprising: an endbell having at least one aperture to receive at least one brush, said aperture dimensioned to allow adjustment of said brush in at least one circumferential direction with respect to said shaft.
74. The motor apparatus of claim 69 further comprising: an endbell having at least one aperture to receive at least one brush, said aperture dimensioned to allow adjustment of said brush in at least one of a clockwise and a counterclockwise circumferential direction with respect to said shaft.
75. The motor apparatus of claim 69 further comprising: an endbell having at least one fastening slot dimensioned to allow adjustment of said brush in at least one circumferential direction with respect to said shaft.
76. The motor apparatus of claim 69 wherein said rotor has a first side and a second side, and wherein at least one bearing is disposed on the same side of said rotor as said brush carrier.
77. The motor apparatus of claim 69 further comprising: an endbell having at least one aperture to receive at least one brush, wherein said <BR> <BR> <BR> <BR> aperture allows for up to approximately five degrees of adjustment of said brush in at least one circumferential direction with respect to said shaft.
78. The motor apparatus of claim 69 wherein said brush carrier comprises a plurality of brush holders aligned with one of said first and said second plurality of conductive portions.
79. The motor apparatus of claim 69 wherein said brush carrier comprises a plurality of brush holders, each of said brush holders at least partially surrounding at least one sleeve.
80. The motor apparatus of claim 69 wherein said rush carrier includes a plurality of unitarily formed brush holders, each of said brush holders being disposed in a corresponding aperture in an endbell.
81. The motor apparatus of claim 69 further comptising at least one bearing adjacent said shaft.
82. The motor apparatus of claim 81 wherein said at least one bearing comprises a plurality of spaced bearings positioned on opposite sides of said rotor.
83. The motor apparatus of claim 69 further comprisiag at lea. : i one bearing retainer formed unitary with an endbell.
84. The motor apparatus of claim 83 wherein said bearing retainer comprises a sloped wall and a flange to engage a bearing.
85. The motor apparatus of claim 81 wherein said bearing is seated against an abutting surface and a sloped wall preventing axial movement of said bearing.
86. The motor apparatus of claim 69 further comprising an endbell having an aperture and at least one bearing, wherein at least one of said at least one bearings is disposed in said aperture.
87. A method of assembling a motor apparatus, comprising: providing a motor apparatus comprising: a shaft; a rotor interconnected to said shaft having an arrangement of conductive windings forming a conductive disk; a first plurality of conductive portions formed from a first end surface of said windings on a first side of said rotor; a second plurality of conductive portions formed from a second end surface of said windings on an opposite side of said rotor; a stator disposed to magnetically interact with said rotor; and a brush carrier; positioning the brush carrier adjacent to a selected one of the plurality of said conductive portions such that said selected plurality of adjacent conductive portions define a commutator surface.
88. A method of claim 87 further comprising the step of positioning the other plurality of said conductive portions adjacent to said brush carrier such that said other plurality of said conductive portions define a second commutator surface.
89. A method of claim 88 wherein the positioning step includes servicing the motor.
90. A motor apparatus, comprising: a shaft; a rotor interconnected to said shaft having radially extending conductive windings, at least some of said windings having first end surfaces and opposite second end surfaces; a stator disposed to magnetically interact with said rotor; and a first brush carrier positioned adjacent to at least soiiic of said first end surfaces and a second brush carrier positioned adjacent to at least some of said second end surfaces.
91. The motor apparatus of claim 90 wherein portions of said first and said second end surfaces comprise respective commutator surfaces.
92. The motor apparatus of claim 90 further comprising a first endbell and a second endbell, each endbell having at least one aperture to receive at least one brush, said aperture dimensioned to allow adjustment of said brush in at least one circumferential direction with respect to said shaft.
93. The motor apparatus of claim 91 wherein at least one of said first commutator surfaces forms an approximate angle of between seventy and ninety degrees with one of said second commutator surfaces.
94. The motor apparatus of claim 91 wherein each of said first commutator surfaces fonns an approximate angle of between seventy and ninety degrees with only one of said second commutator surfaces.
95. The motor apparatus of claim 91 wherein each of said brush carriers further comprises at least one brush and one of said brush carriers is rotated between about seventy and ninety degrees with respect to another of said brush carriers such that said at least one brush is aligned with one of said commutator surfaces.
96. The motor apparatus of claim 90 wherein at lcast one of said brush carriers further comprise at least one brush holder adjacent to an air channel.
97. The motor apparatus of claim 96 wherein each of said at least one brush holder has an air access passage in fluid flow communication with said air channel.
98. The motor apparatus ofctaim 96 further comprising a sleeve at least partially surrounded by said brush holder, said sleeve at least partially surrounding one brush to absorb and dissipate heat radiated from said brush through an air access passage.
99. The motor apparatus of claim 96 further comprising a fan interconnected with said first shaft such that the rotation of said first shaft causes said fan to rotate.
100. The motor apparatus of claim 99 wherein said fan is enclosed by a housing.
101. The motor apparatus of claim 96 further comprising an electric fan positioned to move air through said air channel.
102. A motor apparatus, comprising: a shaft; a rotor having a first end surface and a second end surface interconnected to said shaft; a stator disposed to magnetically interact with said rotor, and at least one of said rotor and said stator including at least one winding; and a brush carrier; said brush carrier having at least one air channel positioned so that airflow through said air channel is directe across at least one of said first and said second end surfaces.
103. The motor apparatus of claim 102 wherein said brush carrier further comprises at least one brush holder adjacent to said air channel.
104. The motor apparatus of claim 103 wherein said brush holder has an air access passage in fluid flow communication with said air channe).
105. The motor apparatus of claim 104 further comprising a sleeve at least partially surrounded by said brush holder, said sleeve at least partially surrounding one brush to absorb and dissipate heat radiated from said brush through said air access passage.
106. The motor apparatus of claim 102 further comprising a fan interconnected with said first shaft such that the rotation of said first shaft causes said fan to rotate.
107. The motor apparatus of claim 106 wherein said fan is enclosed by a housing.
108. The motor apparatus of claim 102 further comprising an electric fan positioned to move air through said air channel.
Description:
INTERNATIONALSEARCHREPORT Intz ional ApplicationNo PCT/US00/05952 C.(Continuation)DOCUMENTSCONSIDERED TO BE RELEVANT CategoryCitationofdocument,withindication,whereappropriate,o ftherelevantpassagesRelevanttoclaimNo. XWO9517779A(LONDONINNOVATIONLTD1,8, ;LYNCHCEDRIC(GB))27-30, 29June1995(1995-06-29)35, 36, 56-59, 69-72, 78,81, 87-89 Ypage4,line13-line25;figures34,38, 1,2A,2B,739, 56-59, 80,82, 83, 86, 91,93, 94,96,97 A73-75 XPATENTABSTRACTSOFJAPAN1,2,6,9, vol.1996,no.02,10, 29February1996(1996-02-29)12-14, &JP07288952A(MATSUSHITAELECTRICIND24,25, COLTD),31October1995(1995-10-31)44-46, 49,67 Aabstract64,65 XFR2438935A(MAGNETIMARELLISPA)1,6,9, 9May1980(1980-05-09)19-21, 23, 44-46, 48,50, 51,53, 62,63,66 Y22,52, 82,83,86 AClaims4,626,60, page2,line28-line34;figures1,261,84,85 XUS1416256A(H.E.BORGER)56-59 16May1922(1922-05-16) Ypage3,line44-line72;figures3,413,14, 49,60,61 YUS5757095A(OHMIMASANORIETAL)13,14,49 26May1998(1998-05-26) column3,line48-column4,line4; figures4,5 4 INTERNATIONALSEARCHREPORT Inte onal ApplicationNo PCT/US00/05952 C.(Continuation)DOCUMENTSCONSIDEREDTOBERELEVANT CategoryCitationofdocument,withindication,whereappropriate,o ftherelevantpassagesRelevanttoclaimNo. XUS5172465A(STEWARTSRKENNETHW)1,6, 22December1992(1992-12-22)9-11,19, 20,23, 44-46, 48,50, 53,62, 63,66 Ycolumn3,line36-column4,line3816,25, 26,60,61 column4,line65-line68;figures1-3 XUS5487213A(HULTDAVIDRETAL)1-4,6, 30January1996(1996-01-30)12-14, 44-47 AAbstract21,32, column2,line48-line5140,42, 51,106, 107 column4,line60-column5,line4; figure6 column5,line4-line8;figure6 column6,line57-line65 column7,line17-line27;figures 1,10,13 XEP0309076A(JOHNSONELECTRICINDMFG)90 29March1989(1989-03-29) YAbstract34,38, figure139,91, 93,94, 96,97 XDE9305152U(KNOERZERK-H.)67-72, 3June1993(1993-06-03)78,87-89 page8,paragraph4-page9,paragraph2; figures5,6 AUS4769572A(VOIGTGOTTFRIED)99,100 6September1988(1988-09-06) figure1 XUS4910790A(KERSHAWPETERA)90 20March1990(1990-03-20) column3,line9-line42;figure1 ADE19642665A(CROBHAMMERSTEINGMBH&90 CO;TEMICAUTOELECTRMOTORSGMBH(DE)) 23April1998(1998-04-23) Abstract figure4 XGB2222320A(JOHNSONELECTRICINDMFG)102-104 28February1990(1990-02-28) Ypage4,line11-page5,line12;figures105 2,4,5 4 INTERNATIONALSEARCHREPORT Ints ionalApplicationNo PCT/US00/05952 C.(Continuation)DOCUMENTSCONSIDEREDTOBERELEVANT Category┬░ Citation ofdocument,withindication,whereappropriate,oftherelevantpass agesRelevanttoclaimNo. Y US5608280A(TAMEMOTOHIROAKIETAL)105 4March1997(1997-03-04) Acolumn4,line45-line52;figures1,241 AUS5095236A(WALSHCOLM)32,40, 10March1992(1992-03-10)42,106, 107 figure1 XUS5659211A(BLANCHETPIERRE)15,55 19August1997(1997-08-19) column3,line25-line32 column3,line57-line62 column4,line6-line21;figures3,4 YUS5689148A(RUBINCHIKILYA)16 18November1997(1997-11-18) AAbstract18 column4,line46-line65;figures 5,11,24 ___ AUS4593220A(COUSINSWALTERKETAL)16,18 3June1986(1986-06-03) Abstract figure3 AEP0398610A(BLACK&DECKERINC)15 22November1990(1990-11-22) figure2 YUS5650676A(BLUMENBERGRAINER)22,52 22July1997(1997-07-22) AAbstract19-21, column3,line60-line65;figure123,26, 48,50, 51,53, 55,62, 63,66 Abstract column2,line54-line56 YFR2726701A(VALEOEQUIPELECTRMOTEUR)25,26 10May1996(1996-05-10) page6,line34-page7,line2;figures 1,2 Abstract page11,line22-line26;figures1,2 4 ,rationalapplicationNo. INTERNATIONALSEARCHREPORTPCT/US00/05952 Box IObservationswherecertainclaimswerefoundunsearchable(Continu ationofitem1offirstsheet) ThisInternationalSearchReporthasnotbeenestablishedinrespecto fcertainclaimsunderArticle17(2)(a)forthefollowingreasons: 1.ClaimsNos.: becausetheyrelatetosubjectmatternotrequiredtobesearchedbythi sAuthority,namely: 2.1-1ClaimsNos.: becausetheyrelatetopartsoftheinternationalApplicationthatdon otcomplywiththeprescribedrequirementstosuch anextentthatnomeaningfulInternationalSearchcanbecarriedout,s pecifically: 3.ClaimsNos.: becausetheyaredependentclaimsandarenotdraftedinaccordancewit hthesecondandthirdsentencesofRude6.4(a). Box11Observationswhereunityofinventionislacking(Continuation ofitem2offirstsheet) ThisInternationalSearchingAuthorityfoundmultipleinventionsin thisinternationalapplication,asfollows: seeadditionalsheet 1.As allrequiredadditionalsearchfeesweretimelypaidbytheapplicant, thisInternationalSearchReportcoversall searchableclaims. 2.As allsearchableclaimscouldbesearchedwithouteffortjustifyingana dditionalfee,thisAuthoritydidnotinvitepayment ofanyadditionalfee. 3.Asonlysomeoftherequiredadditionalsearchfeesweretimelypaidb ytheapplicant,thisInternationalSearchReport coversonlythoseclaimsforwhichfeeswerepaid,specificallyclaims Nos.: 4.No required additional search feesweretimelypaidbytheapplicant.Consequently,thisInternatio nalSearchReportis restrictedtotheinventionfirstmentionedintheclaims;itiscovere dbyclaimsNos.: RemarkonProtest Theadditionalsearchfeeswereaccompaniedbytheapplicant'sprotes t. u FxlNoprotestaccompaniedthepaymentofadditionalsearchfees.

FURTHER INFORMATION CONTINUED FROM PCT/ISA/210 This International Searching Authority found multiple (groups of) inventions in this international application, as follows: 1. Claims: 1-7,9-14,24,44-47,49,54,56-61,64,65,67,68 Releasably interconnected brush carrier and end bell.

2. Claims: 69-89,8,27,34-37 Motor with windings forming conductive/commutating surfaces for cooperation with any axial brush holder (claims 69-86) and method of assembling thereof (claims 87-89).

3. Claims: 90-101 Motor with two brush carriers and details thereof.

4. Claims: 102-108,28-33,38-43 Cooling arrangements on a brush carrier.

5. Claims: 15-18,55 Terminals and electrical interconnections with brushes.

6. Claims: 19-23,48,50-53,62,63,66 Bearing and bearing retainer details.

7. Claims: 25,26 Cover of an end shield INTERNATIONALSEARCHREPORT I ntz ional Application No .on patent family members PCT/US 00/05952 PatentdocumentPublication Patent family Publication citedinsearchreportdate member(s)date US4347455A31-08-1982DE 3166118 D 25-10-1984 EP 0038596 A 28-10-1981 JP 56162950 A 15-12-1981 WO9517779A29-06-1995GB 2286293 A 09-08-1995 AU 1322595 A 10-07-1995 DE 69419528 D 19-08-1999 DE 69419528 T 30-03-2000 EP 0736232 A 09-10-1996 EP 0884826 A 16-12-1998 US 6040645 A 21-03-2000 JP07288952A31-10-1995NONE FR2438935A09-05-1980IT 1099356 B 18-09-1985 DE 2941153 A 24-04-1980 US1416256A16-05-1922NONE US5757095A26-05-1998JP 9285074 A 31-10-1997 US5172465A22-12-1992US 5006747 A 09-04-1991 US5487213A30-01-1996CA 2141287A,C03-11-1995 EP0309076A29-03-1989GB 2210208 A 01-06-1989 DE9305152U03-06-1993AT 167966 T 15-07-1998 DE 59406345 D 06-08-1998 EP 0619638 A 12-10-1994 ES 2120529 T O1-11-1998 JP 7071444 A 17-03-1995 US 5804905 A 08-09-1998 US4769572A06-09-1988DE 3617684 A 03-12-1987 EP 0247495 A 02-12-1987 JP 62281750 A 07-12-1987 US4910790A20-03-1990AT 94321 T 15-09-1993 DE 3787363 D 14-10-1993 DE 3787363 T 10-03-1994 EP 0277431 A 10-08-1988 DE19642665A23-04-1998NONE GB2222320A28-02-1990DE 8910156 U 21-12-1989 HK 37195 A 24-03-1995 US5608280A04-03-1997DE 69422790 D 02-03-2000 DE 69422790 T 07-09-2000 EP 0660465 A 28-06-1995 JP 2795199 B 10-09-1998 JP 7231613 A 29-08-1995 US5095236A10-03-1992DE 3932760 A 11-04-1991 EP 0482244 A 29-04-1992 US5659211A19-08-1997FR 2733377 A 25-10-1996 INTERNATIONALSEARCH REPORT Ints ional ApplicationNo information on patent family members PCT/US00/05952 PatentdocumentPublication PatentPublication citedinsearchreportdate member(s)date US5659211ACN 1148744 A 30-04-1997 DE 69603651 D 16-09-1999 DE 69603651 T 09-12-1999 EP 0739077 A 23-10-1996 US5689148A18-11-1997US 5773907 A 30-06-1998 CA 2224193 A 16-01-1997 WO 9701878 A 16-01-1997 CN 1193419 A 16-09-1998 DE 69603864 D 23-09-1999 EP 0835539 A 15-04-1998 JP 11508756 T 27-07-1999 WO 9530269 A 09-11-1995 CN 1128088A,B 31-07-1996 DE 69503015 D 23-07-1998 DE 69503015 T 07-01-1999 EP 0706727 A 17-04-1996 US4593220A03-06-1986AU 571822 B 21-04-1988 AU 4483785 A 16-01-1986 BE 902881 A 04-11-1985 CA 1248164 A 03-01-1989 DE 8520258 U 31-10-1985 JP 61058444 A 25-03-1986 EP0398610A22-11-1990US 4963779 A 16-10-1990 AU 622376 B 02-04-1992 AU 5499990 A 15-11-1990 CA 2015139 A 15-11-1990 DE 69002535 D 09-09-1993 DE 69002535 T 18-11-1993 JP 2922978 B 26-07-1999 JP 3022849 A 31-01-1991 US5650676A22-07-1997DE 4235962 A 05-05-1994 CA 2126688 A 11-05-1994 DE 9219131 U 17-09-1998 WO 9410738 A 11-05-1994 EP 0619923 A 19-10-1994 JP 7506957 T 27-07-1995 US 5576586 A 19-11-1996 DE 4423531 A 12-01-1995 EP 0633645 A 11-01-1995 JP 7147749 A 06-06-1995 FR 2726701 A 10-05-1996 NONEFR 2726701 A 10-05-1996 NONE