EP1155476A2 - Procede de fabrication de commutateurs, et commutateurs - Google Patents

Procede de fabrication de commutateurs, et commutateurs

Info

Publication number
EP1155476A2
EP1155476A2 EP00915880A EP00915880A EP1155476A2 EP 1155476 A2 EP1155476 A2 EP 1155476A2 EP 00915880 A EP00915880 A EP 00915880A EP 00915880 A EP00915880 A EP 00915880A EP 1155476 A2 EP1155476 A2 EP 1155476A2
Authority
EP
European Patent Office
Prior art keywords
shell
core
electrically
commutator
conductive material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00915880A
Other languages
German (de)
English (en)
Inventor
Shepard L. Hockaday
Alvin Leon Farthing
Tony Earl Hall
John David Reece, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Energy Conversion Systems Holdings LLC
Original Assignee
Morganite Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/259,518 external-priority patent/US6236136B1/en
Application filed by Morganite Inc filed Critical Morganite Inc
Publication of EP1155476A2 publication Critical patent/EP1155476A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/06—Manufacture of commutators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/04—Commutators
    • H01R39/06—Commutators other than with external cylindrical contact surface, e.g. flat commutators

Definitions

  • This invention relates to rotary switches and more particularly, although not exclusively, to "flat” or “face-style” commutators for use with electric motors and methods of manufacturing such commutators.
  • FIG. 2 of the Abe, et al. patents is metal shell or plate 5, whose terminal 6 admits connection to windings of a motor, and an electrically-insulating support 1.
  • Plate 5 includes on its inner surface "small projections 7," which function to anchor the graphite segments 3 from displacement as the commutator operates.
  • a separate, unillustrated "part of . .. metal plate 5 is embedded in the electrically insulating support 1" to retain the relative positions of the plate and support.
  • Aupac Co., Ltd. (“Aupac"
  • a commutator made by Aupac includes two sets of anchors in the plate or shell.
  • One set analogous to the unshown portions of metal plate 5 discussed in the Abe, et al. patents, retains the position of the insulating support or core of the commutator, while the other (analogous to "small projections 7") assists in anchoring the conductive segments relative to the plate or shell.
  • the analogous anchors of the Aupac commutator are formed by bending radially inward axially-extending protrusions on an edge of the plate or shell (rather than as protrusions from its side).
  • FIGS. 1-6 illustrate, essentially identically, aspects of the Aupac commutator 100.
  • metal shell 104 in which anchors 108 are formed. Such anchors 108 extend radially inward from shell 104 and are used to moor an electrically- insulating core 110 (see FIG. 4).
  • terminals 112 which ultimately will be bent into tangs or hooks
  • projections 116 are not formed in inner surface 120 of shell 104 but rather extend from its edge 124 before being bent inward.
  • Manufacture of the Aupac commutator 100 is relatively complex. Initially, shell 104 must be blanked and formed in the manner of FIGS. 1-3 so as to create anchors 108, terminals 112, and projections 116. Core 110 must then be molded into shell 104, as shown in FIG. 4, so that its phenolic material surrounds anchors 108. Molding core 110 in this manner effectively embeds anchors 108 therein, helping fix the position of core 110 relative to shell 104. After the phenolic material of core 110 is molded and cured, excess material
  • flash typically denoted "flash"
  • flash must be removed from inner surface 120. Failure to remove such excess material can be problematic, as it can adversely affect the electrical continuity between shell 104 and the electrically-conductive graphite segments 126 (see FIG. 6) ultimately forming the face of the Aupac commutator 100. Machining, furthermore, is required to delete flash from inner surface 120 once core 110 has been molded and cured. After the material of core 110 is cured and the flash is removed from inner surface 120 of shell 104, projections 116 must be bent radially inward as illustrated in FIG. 5. Concurrently terminals 112 may be formed into tangs or hooks 128 for subsequent attachment to the windings of a motor. Only then are conductive segments 126 created as shown in FIG. 6.
  • segments 126 which initially consist of graphite powder or material.
  • the material is molded, or pressed, into recess 132 (see FIG. 5) so that it abuts core 110 and projections 116 are embedded within. Doing so anchors the material of segments 126 to shell 104, after which the material is cured and slotted to form the segments 126.
  • SUMMARY OF THE INVENTION Manufacturing methods of the present invention are substantially simpler than those used to produce both the Aupac commutator and those of the Abe, et al. patents.
  • the methods employed with the present invention reverse the sequence of inserting a carbonaceous (typically at least slightly deformable) pre-form and (phenolic or other) insulating core into the commutator shell.
  • the carbonaceous material and core can be molded simultaneously rather than in the two-step process described in the preceding section.
  • Methods of the present invention likewise eliminate one of two curing procedures involved in manufacturing the Aupac commutator. Because the insulating core of the Aupac commutator forms a base against which the carbonaceous material is forced under pressure, the core must be cured prior to molding of the carbonaceous material.
  • the core will lack sufficient strength and rigidity to admit proper molding of the carbon segments as it encounters such pressure. With the present invention, however, curing of the carbonaceous material and core can occur simultaneously.
  • commutators of the present invention similarly may be made with two (or more) sets of anchors, only one set is necessary, as such set is adapted not only to secure both the core and carbonaceous material to the shell, but also to provide electrical continuity between the shell and carbonaceous material.
  • the core of the Aupac commutator is already cured (and nonreactive) when the carbonaceous material is molded and thus no chemical bonding of the two substances occurs, the core and carbon pre-forms of the commutators of the present invention bond, or interlock, both chemically and mechanically as their simultaneous molding transpires. The result is increased mooring of the carbonaceous material to the core within the shell without the need to form additional anchors in the shell itself.
  • commutators according to the present invention likewise reduce waste of carbonaceous material.
  • These commutators further are formed so that the molding of the carbonaceous material produces higher density, more uniform material, advantageous properties for many of their intended uses.
  • Commutators of the invention also may have shells of extended height during part or all of the manufacturing process. Increasing the height of the shell protects the integrity of the carbonaceous (or other) face material of each device, reducing its exposure to being chipped, scratched, or otherwise damaged during manufacture.
  • the shell can be sheared at the end of the manufacturing process if desired so as not to protrude, or to protrude only a selected amount, beyond the commutator face.
  • Alternative commutators disclosed herein provide an anchoring system in which one or more undercuts or recesses in either or both of the shell and insulating core receive flange-like protrusions of the carbonaceous (or other conductive) material to prevent its axial displacement. Unlike as in Figure 2 of the Abe, et al. patents, therefore, no special projections need be formed for such purpose in the metal plate or shell.
  • the undercuts furthermore, may be wholly or partially annular and created using the same tool used to remove excess material utilized to mold the insulating core. They thus do not require any special tooling to make and can be established when such excess material is removed.
  • any undercut present in the inner diameter of the shell in connection with these commutators need not extend the entire depth of the shell. If such undercut were annular, it obviously could not extend the depth of the shell, as to do so would cut the shell into two pieces. Partially-annular undercuts conceivably could penetrate the exterior of the shell, although applicants believe in such cases at least certain performance attributes of the resulting commutator might be compromised. Complete-penetration undercuts also likely would require a separate tool, undermining the cost-effectiveness of this particular version of the present design.
  • Providing the core of these types of commutators with a non-circular collar surrounding the opening for the motor shaft additionally provides an improvement over the anchoring system of some existing designs, as the differing curvatures of the (circular) inner diameter of the shell and the (non-circular) collar cooperate to restrict circumferential displacement of the carbonaceous material once divided into individual segments.
  • the collar may be circular if not concentric with the inner diameter of the shell. It is therefore an object of the invention to provide an anchoring system for one or more conductive segments of a rotary switch or commutator.
  • unwanted insulating material of the core i.e. flash
  • an object of the present invention to provide commutators having improved characteristics and longer useful lives that at least certain other commutators discussed herein. It is an additional object of the present invention to provide a commutator whose expense and difficulty of manufacture is decreased and whose shell may extend beyond the face of the segments during at least part of the manufacturing process.
  • an object of the present invention to provide various commutators in which conductive segments are fitted between a shell and the collar of an insulating core, with the inner surface of the shell and the outer surface of the collar either not having identical curvature or, if of identical curvature, not both centered on the rotational axis of the commutator.
  • FIG. 1 is a plan view of, essentially, the shell of the Aupac commutator.
  • FIG. 2 is an elevational view of the shell of the Aupac commutator of FIG. 1.
  • FIG. 3 is a cross-sectional view of the shell of the Aupac commutator taken along lines A- A of FIG. 1.
  • FIGS. 4-5 are cross-sectional views of the Aupac commutator of FIG. 6 illustrating aspects of its formation.
  • FIG. 6 is a cross-sectional view of the Aupac commutator incorporating the shell of FIG. 1.
  • FIG. 7 is a cross-sectional view of a commutator of the present invention.
  • FIGS. 8-10 are cross-sectional views of the commutator of FIG. 7 illustrating aspects of its formation.
  • FIG. 11-12 are cross-sectional view of an alternative, barrel-style commutator made consistent with techniques of the present invention.
  • FIG. 13 is a cross-sectional view of a commutator of the present invention taken along lines A-A of FIG. 14.
  • FIG. 14 is a plan view of the commutator of FIG. 13.
  • FIG. 15 is a cross-sectional view of the commutator of FIG. 13 (taken along lines A-A of FIG. 14) prior to removing an extended portion of its exterior shell.
  • FIG. 7 provides a cross-sectional view of an exemplary commutator 10 of the present invention.
  • Commutator 10 includes multiple conductive segments 14, whose exposed surfaces 18 are intended to contact one or more conductive brushes in use. Intermediate adjacent segments 14 are gaps or slots (not illustrated), which isolate the adjacent segments 14 and permit commutator 10 to operate as a high-speed rotary switch.
  • core 26 and "blank" or shell 30 are shown in FIG. 7 .
  • Core 26 is made of electrically-insulating material, typically (although not necessarily) phenolic, and defines a central aperture 34 for receiving a spindle or shaft in use.
  • Core 26 additionally defines collar 38, which circumscribes aperture 34 in the area of segments 14.
  • shell 30 constitutes the outer diameter of commutator 10.
  • Formed into shell 30 are multiple tangs 42, which may be bent into hooks.
  • internal anchors 46 and, if desired, one or more grooves. As shown in FIG. 8, both tangs 42 and anchors 46 typically are formed following the blanking of shell 30.
  • pre-form 50 (which may, but need not necessarily, be deformable and in some cases may consist of raw or other powder) for segments 14 may be placed within shell 30. Consistent with FIG. 9, pre-form 50 may be inserted so that its inner face 54 is penetrated by anchors 46, thereby at least partially securing it in position within shell 30. Contact between anchors 46 and inner face 54 additionally provides further electrical connection between shell 30 and the pre-form 50. As shown in FIG. 9, shell 30 may extend beyond outer face 58 of pre-form 50, thereby protecting it to some extent during the remainder of the manufacturing process.
  • anchors 46 are shown as extending at an acute angle from shell 30, those skilled in the art will recognize that anchors 46 may be shaped or positioned differently if appropriate or desired. Anchors 46 additionally need not necessarily penetrate pre-form 50 if other securing mechanisms are adequate, but rather may instead merely abut or otherwise contact it. Likewise, shell 30 is not required to extend beyond outer faces 58, notwithstanding the advantages obtained when such extension exists. Following placement of pre-form 50 within shell 30, the material of core 26 is injected and molded onto pre-form 50. The act of such molding, illustrated in FIG. 10, embeds portions of anchors 46 within core 26, thereby securing its position relative to shell 30.
  • the high pressures and temperatures used to mold core 26 likewise concurrently mold pre-form 50, bonding core 26 to inner face 54 (typically via cross-linking or other bonding of resins contained in both core 26 and pre-form 50) and mechanically interlocking features (i.e. protrusions and cavities represented diagrammatically in FIG. 10) on their adjoining surfaces (or possibly created by at least slight deformation of either or both components during the molding process).
  • This chemical bonding and mechanical interlock between core 26 and preform 50 functions further to anchor pre-form 50 within shell 30.
  • FIGS. 9-10 additionally illustrate the flash-avoidance aspects of the present invention.
  • pre-form 50 is inserted into shell 30 before core 26 is molded, the pressure used to mold core 26 forces the material of pre-form 50 to expand outward against the inner surface 62 of shell 30. This expansion prevents excess material of core 26 from coming between pre-form 50 and inner surface 62, thus both preventing flash within shell 30 and avoiding any need to remove it. Further anchoring of pre-form 50 conceivably could occur if inner surface 62 contains a groove or other recess into which a portion of pre-form 50 could be fitted (or protrude when deformed).
  • any flash exists on outer surface 66 of shell 30 it can be removed using conventional mechanical-abrasion (or other) methods.
  • height Ai is greater than the sum of the depth A 2 to which core 26 is positioned within shell 30 and the height A 3 of pre-form 50. If shell 30 is abraded mechanically, its added height can advantageously protect outer face 58 from certain types of damage associated with such abrasion. Thereafter the material of both core 26 and pre-form 50 can be cured together and any added height of shell 30 (as well as the outermost layer of outer face 58) removed. Slotting additionally can occur to create segments 14, with contact surfaces 18, from pre-form 50.
  • FIGS. 11-12 illustrate a barrel-style commutator 200 according to the present invention.
  • Commutator 200 includes shell 204 from which tangs 208 and anchors 212 are formed.
  • Carbonaceous pre-form 216 can be placed so that shell 204 penetrates it, thereby partially (directly) securing pre-form 216 to shell 204.
  • Core 220 can then be injected within shell 204 and molded onto pre-form 216, with the joint molding of core 220 and pre-form 216 chemically and mechanically interlocking them.
  • anchors 212 are embedded within core 220. If other fixing mechanisms are adequate, anchors 212 need not necessarily be used. Alternatively, anchors 212 (if present) could be repositioned so as to contact pre-form 216 as well.
  • FIGS. 13-15 illustrate aspects of commutator 310 of the present invention.
  • Commutator 310 includes multiple conductive segments 314, whose exposed surfaces 318 (which form the face of commutator 310) are intended to contact one or more conductive brushes in use.
  • Intermediate adjacent segments 314 are gaps or slots 322, which isolate the adjacent segments 314 and permit commutator 310 to operate as a high-speed rotary switch.
  • core 326 and "blank" or shell 330 are shown in FIGS. 13-15.
  • Core 326 is made of electrically-insulating material, typically (although not necessarily) phenolic, and defines a central aperture 334 for receiving a spindle or shaft in use.
  • Core 326 additionally defines collar 338, which circumscribes aperture 334 in the area of segments 314.
  • the outer diameter of collar 338 is not circular, but rather decagonal in shape, consisting of a series of flat edges 342, each abutting the inner edge 346 of a segment 314. Because the outer edge 350 of each segment 314 adjacent shell 330 is curved differently than edges 342 (i.e. it forms an arc), the segments 314 are fitted between collar 338 and shell 330 so as not to be displaceable circumferentially. Stated differently, because edges 342 are not circles or part-circles centered on rotational axis 352, segments 314 are not displaced circumferentially as commutator 310 rotates.
  • outer diameter of collar 338 need not be decagonal as shown in FIG. 14, but may assume any shape other than that of outer edge 350 and appropriate for the number of segments 314 to be incorporated into commutator 310.
  • the outer diameter of collar 338 may have the same shape as outer edge 350 and continue to restrict circumferential displacement of segments 314 as long as the outer diameter of collar 338 and outer edge 350 do not form concentric arcs centered about axis 352. If circumferential displacement of segments 314 is, for whatever reason, not an issue of concern, collar 338 and outer edge 350 indeed may form concentric circles or part circles about axis 352.
  • shell 330 constitutes the outer diameter of commutator 310.
  • Formed into shell 330 are multiple tangs 354, which may be bent into hooks as detailed primarily in FIGS. 13 and 15.
  • anchors 358 are typically included in shell 330.
  • FIGS. 13 and 15 also illustrate annular recesses or undercuts 362 A and 362B which may be present in inner surface 364 of shell 330. Similar undercuts 366A and 366B may be formed in edges 342 of collar 338. Collectively, undercuts 362A-B and 366A-B function to anchor segments 314 against axial displacement as commutator 310 operates. As detailed in FIGS. 13 and 15, portions 368 of segments 314 are pressed or otherwise fitted into the undercuts 362A-B and 366A-B, effectively locking segments 314 into position axially.
  • undercuts 362A-B and 366A-B anchor segments 3144 no metal projections such as disclosed in the Abe, et al. patents are required. As a result, most or all of the depth Di 1 of segments 314 is available as a bearing surface for the electrical brushes used in conjunction with commutator 310. The useful life of commutator 310 is thus increased, as the commutator 310 can continue to operate until surface 318 of each segment 314 is worn substantially the entirety of depth Di'.
  • undercuts 362A, 362B, 366A, and 366B
  • undercuts need not necessarily be created in both shell 330 and collar 338, but rather may be formed in one or the other.
  • a single annular undercut in either shell 330 or collar 338) may be adequate to anchor segments 314 against axial movement.
  • the one (or more) undercuts need not be wholly continuous or annular, but rather may be made of discrete sections in which portions of segments 314 are fitted.
  • the undercuts conceivably could extend through shell 330 from inner surface 364 to outer surface 370, although applicants believe doing so might compromise at least certain performance attributes of the resulting commutator 310.
  • any undercut is likely to be a recess extending a greater distance circumferentially than axially in either shell 330 or collar 338. It need not, however, have the partially-rectangular cross-sectional shape shown in FIGS. 13 and 15, but rather may have any desired or appropriate such shape.
  • commutator 310 Formation of commutator 310 is straightforward. Unlike the devices of the Abe, et al. patents, no projections in shell 330 to anchor segments 314 need be created or bent—much less created and bent before the material from which segments 314 are made is inserted into the shell 330. Instead, only anchors 358 for core 326 need be formed from the blank or shell 330. In certain embodiments of commutator 310, core 326 is then injected into shell 330 and cured. In such cases the same lathe or conventional tool used to remove excess phenolic material of core 326 can create any desired undercuts in either or both of inner surface 364 of shell 330 and edges 342 of collar 338, which undercuts form the one or more recesses (i.e.
  • any undercuts are created, a cylindrical ring of graphite or other material used to make segments 314 can be inserted (typically under substantial pressure) into shell 330 and deformed so that portions 368 are forced to enter, or "key-in” to, the undercuts.
  • any undercuts 362A-B or 366A-B can be made prior to injection of core 326 into shell 330.
  • the carbonaceous or other material can be slotted as shown in FIG. 14 to form individual segments 314, and shell 330 can be slotted as well.
  • FIG. 15 Illustrated in FIG. 15 is a version of commutator 310 in which shell 330 extends beyond surface 318 by a distance D 2 '. Increasing the height of shell 330 in this manner protects the integrity of surface 318, reducing likelihood of it being chipped, scratched, or otherwise damaged during manufacture of commutator 310. Shell 330 (possibly together with a fine portion of surface 318) can be sheared toward (or at) the end of the manufacturing process to produce the design of commutator 310 shown in FIG. 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

Cette invention concerne des commutateurs et leurs procédés de fabrication. Selon ces procédés, la matière carbonée et le noyau d'un commutateur peuvent être moulés simultanément, au lieu de l'être en deux étapes, ce qui élimine une des deux étapes des autres techniques de fabrication. De plus, en utilisant les techniques décrites dans cette invention, il n'est plus nécessaire d'usiner la surface interne de la coquille du commutateur pour enlever l'excès de matières indésirables phénoliques ou autre. Les commutateurs fabriqués selon ces procédés peuvent présenter une plus grande durée de vie utile et une plus grande efficacité que d'autres commutateurs actuellement disponibles. Une conception alternative de commutateur présentée dans cette invention inclut un système de fixation de ses parties conductrices. Une ou plusieurs encoches dans la coquille en métal et/ou dans le noyau isolant du commutateur reçoivent des parties saillantes de la matière conductrices pour éviter son déplacement axial. La coquille en métal qui, pour des raisons de protection, peut s'étendre au-dessus de la face de la matière conductrice pendant certains ou tous les processus de fabrication, réduit au minimum le déplacement radial des parties formées de matière conductrice. Une courbure variable ou non-concentrique de la surface interne de la coquille et la surface externe d'une partie du noyau isolant limitent le mouvement circulaire indésirable desdites parties.
EP00915880A 1999-02-26 2000-02-25 Procede de fabrication de commutateurs, et commutateurs Withdrawn EP1155476A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US259518 1994-06-14
US25951699A 1999-02-26 1999-02-26
US09/259,518 US6236136B1 (en) 1999-02-26 1999-02-26 Methods and results of manufacturing commutators
US259516 1999-02-26
PCT/US2000/004899 WO2000051210A2 (fr) 1999-02-26 2000-02-25 Procede de fabrication de commutateurs, et commutateurs

Publications (1)

Publication Number Publication Date
EP1155476A2 true EP1155476A2 (fr) 2001-11-21

Family

ID=26947360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00915880A Withdrawn EP1155476A2 (fr) 1999-02-26 2000-02-25 Procede de fabrication de commutateurs, et commutateurs

Country Status (3)

Country Link
EP (1) EP1155476A2 (fr)
AU (1) AU3707900A (fr)
WO (1) WO2000051210A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112372256B (zh) * 2020-12-01 2023-09-01 陕西航天时代导航设备有限公司 一种整流子加工工艺

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633781B3 (fr) * 1988-07-04 1990-06-15 Carbone Ag Collecteur, en particulier collecteur plan d'une machine electrique
DE4026951A1 (de) * 1990-08-25 1992-02-27 Nettelhoff Friedrich Fa Plankollektor fuer einen elektromotor oder -generator
JP2797242B2 (ja) * 1993-12-22 1998-09-17 株式会社ミツバ 整流子及びその製造方法
US5826324A (en) * 1995-12-29 1998-10-27 Aupac Co., Ltd. Method of manufacturing flat-type commutator
US5925961A (en) * 1996-04-05 1999-07-20 Sugiyama Seisakusyo Co., Ltd. Plane carbon commutator and its manufacturing method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0051210A3 *

Also Published As

Publication number Publication date
WO2000051210A2 (fr) 2000-08-31
WO2000051210A3 (fr) 2001-06-28
AU3707900A (en) 2000-09-14

Similar Documents

Publication Publication Date Title
US5442849A (en) Method of making a planar carbon segment commutator
EP0667657B1 (fr) Méthode de fabrication d'un commutateur plan à segments en charbon.
US6844654B2 (en) Drum commutator and method for producing the same
EP0780029B1 (fr) Collecteur rotatif
EP0529911B1 (fr) Balai en charbon à segment cylindrique
US6236136B1 (en) Methods and results of manufacturing commutators
US4358319A (en) Method for manufacturing commutator
EP1314235B1 (fr) Procede et systeme de fixation de segments de commutateur plans
EP1363365B1 (fr) Améliorations dans ou apportées à des commutateurs
RU2382455C2 (ru) Плоский коллектор и способ изготовления плоского коллектора
WO2000051210A2 (fr) Procede de fabrication de commutateurs, et commutateurs
GB2186217A (en) A commutator and process for manufacturing the same
KR20050074488A (ko) 전기 기계용 정류자 및 상기 정류자의 제조 방법
EP0325353A2 (fr) Un commutateur
JPS5826546A (ja) スリツプリング装置
US5933939A (en) Process for producing a commutator of a rotating machine
US20050189841A1 (en) Commutator for an electric machine and method for producing same
JP2009112070A (ja) カーボンコンミテータとその製造方法および製造用治具、並びに回転電機
HK1117943A (en) Flat commutator and method for producing a flat commutator
HK1117944A (en) Face commutator and method for producing a face commutator
JPH04355649A (ja) 組立式整流子を備えた小型モータ
HK1081733B (en) Drum commutator for an electric machine and method for manufacturing and commutation system of the same

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010912

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ENERGY CONVERSION SYSTEMS HOLDINGS, LLC

17Q First examination report despatched

Effective date: 20071001

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090901