EP1133028A2 - Dispositif bague collectrice pour moteurs électriques et générateurs - Google Patents
Dispositif bague collectrice pour moteurs électriques et générateurs Download PDFInfo
- Publication number
- EP1133028A2 EP1133028A2 EP01103814A EP01103814A EP1133028A2 EP 1133028 A2 EP1133028 A2 EP 1133028A2 EP 01103814 A EP01103814 A EP 01103814A EP 01103814 A EP01103814 A EP 01103814A EP 1133028 A2 EP1133028 A2 EP 1133028A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- slip ring
- sliding layer
- slip
- metallic
- arrangement according
- 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.)
- Granted
Links
Images
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
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/08—Slip-rings
- H01R39/085—Slip-rings the slip-rings being made of carbon
-
- 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
- H01R39/56—Devices for lubricating or polishing slip-rings or commutators during operation of the collector
-
- 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
- H01R39/64—Devices for uninterrupted current collection
Definitions
- the invention relates to slip ring arrangements for electrical machines with brushes made of carbon materials and slip ring bodies, the brushes with the slip rings of the slip ring body are electrically conductive are interconnected.
- Electric motors and generators with which electric Energy in rotational energy or vice versa rotational energy is converted into electrical energy Power supply for the rotatably arranged coil, the ver non-positively or positively with the axis of rotation is bound. This is usually done with the axis of rotation connected and concentric slip rings, which are conductively connected with fixed brushes, or about the pairing of brushes with so-called commutators or collectors in addition to manufacturing the electrical Connection between the fixed and the rotating part of the electrical machine also the electricity turn (with DC machines).
- the slip rings and commutators usually exist made of metals such as copper, copper alloys such as Bronze, Tin bronze, nickel bronze, silver or steel.
- the slip rings become slip ring bodies by insulating Fasteners connected to the hub (axis of rotation), being are isolated from each other and from each other.
- electrically conductive Brushes arranged in a fixed position, which are connected to the Surface of the slip rings are kept in contact.
- For AC motors and generators become slip rings required individually or several times per phase.
- the sliding contacts mostly consist of carbon materials, optionally in combination with metals (e.g. metal graphite, for the production of which mixtures of Metal powders, especially copper, tin or lead, with Graphite, especially natural graphite, pressed and subsequently solidified by annealing or sintering).
- metals e.g. metal graphite, for the production of which mixtures of Metal powders, especially copper, tin or lead, with Graphite, especially natural graphite, pressed and subsequently solidified by annealing or sintering).
- Another construction is from the patent DD 248 909 known.
- the slip ring base Has voids to the heat loss from all sides To be able to remove ventilation.
- the metallic slip ring base facing side of the coal guide ring must be metallized to have a low contact resistance to ensure and enable a soldered connection. Due to the strong heating of the construction by the Ohmic power loss as well as during soldering thermal stresses occur. Therefore, the outer part of the metallic slip ring base preferably with recesses provided to compensate for thermal stresses.
- This construction ensures that the contact surface pairing has minimal wear, since the material of the friction partner of the brushes can be selected so that the abrasion between these mutually moving materials is considerably lower than that between a pairing of metals or a pairing with metal and carbon material for the brushes.
- the contact resistance between the metallic base of the slip ring and the sliding layer is centrosymmetric.
- the invention therefore relates to a slip ring arrangement for electric motors and generators in which brushes are made Carbon materials and the slip rings of the slip ring body are electrically connected to each other, characterized in that the slip rings are metallic Slip rings of the usual type (slip ring base) and one electrically conductive sliding layer made of a graphite material include, whose thickness is a maximum of 11% of the outer radius of the slip ring and the electrically conductive on the Scope of the metallic slip ring base by gluing is attached. It is also possible that not all Slip rings of the slip ring body with the sliding layer are provided.
- the slip ring body is here designates the arrangement that consists of the hub, the Insulator (preferably the insulating sleeve in the form of a Cylinder jacket) and the slip rings, which at the Invention from the metallic slip ring base and Sliding layer are composed.
- the thickness of the sliding layer is limited by their conductivity (the thicker that compared to metals poorer conductive sliding layer, the higher it becomes the resistance between that with the metallic slip ring base Conductively connected discharge line and the connecting line on the brush). It has proven to be beneficial proven the thickness of the sliding layer not greater than 11% to make the radius of the outer cladding of the sliding layer.
- the metallic slip ring base is usually a flat cylindrical support ring, the massive, with (mostly circular) recesses or designed as a spoked wheel can be. It is also possible and preferred the width the slip ring base near the outer shell in the Region to choose larger than the rest of the ring.
- the advantage of a bond is that the electrical Connection has the largest possible contact area, this lowers the contact resistance and distributes the force between the two materials on the largest possible area. In the case of gluing, this is otherwise not the case with Preparation of a solder joint required heating Temperatures at which the solder melts. When soldering namely, special precautions required to avoid Avoid damage to the slip ring base, such as disassembly or attaching a heat shield.
- the sliding layer consists of an electrically conductive Graphite material. Is preferred as material for the Sliding layer a graphite material with a bending strength of at least 30 MPa. Will continue preferably isostatically pressed graphite material used.
- the thickness of the sliding layer should be in the Compared to the metallic slip ring base higher specific resistance can be kept as low as possible. However, it should be borne in mind that on the one hand the mechanical stability of the sliding layer with less Thickness becomes smaller, and on the other hand the abrasion in Connection with the (usually and preferably from Carbon materials) brushing through the appropriate selection of material and its thickness should be designed that by renewing the sliding layer required maintenance intervals the same or longer than the average bearing life.
- the thickness of the sliding layer should therefore not more than 11% of the outer radius of the slip ring (i.e. the outer radius of the sliding layer); is preferred the thickness of the sliding layer is 10% or less of this radius, especially 8% or less, with shares of 6% and below or 4% and below are particularly preferred.
- conductive adhesives are used for gluing the sliding layer and the metallic slip ring base .
- This Adhesives should preferably be selected so that their Temperature resistance is so great that even a firm one Gluing the sliding layer on the metallic
- the slip ring base is secured during operation the slip ring arrangement occurring temperatures at Slip ring.
- adhesives are also preferably used, that do not have a suitable conductivity of their own however, a metal powder, preferably copper powder, is added becomes.
- the Adhesive layer the coated surfaces with the metal powder sprinkled to an electrically conductive adhesive connection to obtain.
- the metal powder used have preferably has a grain size of 0.01 mm to 0.2 mm.
- Adhesives used include, in particular, epoxy resin adhesives, Phenolic resin adhesive, cyanate ester resin adhesive and adhesive the basis of polyurethane resins, polyester resins and Amine resins.
- Slip rings used phenolic resin adhesive.
- the Layer thickness of the adhesive on the metal surface of the Slip ring base or on the inner surface of the sliding layer is preferably between 0.02 mm and 0.2 mm, particularly preferably between 0.05 mm and 0.1 mm.
- graphite brushes that is, brushes made of Carbon materials with a graphitic character. These include in particular electrographite and burned Carbon materials that contain natural graphite.
- the sliding layer which is preferably made of said flex-resistant Carbon material exists, if necessary without problems can be renewed; all that has to be done is the remaining one Sliding layer and the adhesive layer down to the metal be turned off, followed by a new sliding layer can be applied. Changes in brush position at this overhaul is not required here. At a the slip ring must be made of pure metal if worn be revised, with a minimum diameter not may fall short, or the entire slip ring must be replaced, the brushes also renewed Need to become.
- the metallic slip rings an existing machine in this way (e.g. by Grinding, turning or milling) to prepare that at least one of the edges of the outer surface of the remaining metallic slip ring base each Stand overhang (in the direction of the increasing radius) remains, which is preferably 0.5 mm to 5 mm, in particular 1 mm up to 3 mm wide and 0.5 mm to 3 mm, preferably 1 to 2 mm is high.
- the sliding layer is in the cylindrical groove, which is created in this way, glued in such a way that the Completes the sliding layer with the supernatants or these preferably by up to 5 mm, in particular up to 3 mm towered over.
- the entire Slip ring body for overhauling or renewing the sliding layer be clamped, the slip rings are up to the metallic base is turned off and the sliding layer can (with one or more slip rings at the same time) be replaced.
- the sliding layer can consist of a closed ring consist; however, it is preferred to make the sliding layer to put together several segments that consist of one or several graphite rings are cut, whereby they are in at least two, particularly preferably at least three Segments is applied to the carrier. It is favorable, the joint between two adjacent Sliding layer segments not parallel to the axis of rotation (i.e. perpendicular to the tangent), but in one Angle to the tangent of maximum 75 °, preferably maximum 60 °, and particularly preferably up to 45 °.
- Tangent is defined as follows and continues like this uses: “A tangent is any straight line that is the outer Touched surface of the slip ring and perpendicular to Rotation axis of the rotating part of the electrical Machine runs. "So it turned out to be particularly advantageous proven if the sliding layer in one piece in the form of a Ring is applied to slit this all around an angle ⁇ with respect to the tangent, which preferably so too is dimensioned that the slot at least once over the full extent of the sliding layer runs.
- the (arc) length of the longest segment should be at least 110% of the length of the other (or the second longest) segment.
- the thickness of the sliding layer is up to 11% of the outer radius of the slip ring, preferably at most 5 mm, in particular 4 mm and less.
- a Insulating layer 12 which is applied to a hub 1
- This construction is over 2, which is an enlarged detail 1 is.
- a metallic part of the slip ring base 2 on which the annular sliding layer 3 through the electrically conductive adhesive 6 is attached.
- FIG. 4 shows a section along the line IV-IV of FIG. 1.
- the annular slip ring base 2 ′′, to which the sliding layer 3 ′′ is glued, is fastened on the insulating layer 12 above the hub 1.
- the multi-part embodiment of the sliding layer 3 ′′ can be seen in this FIG. 4, a three-part embodiment being shown here, with the sliding layer segments 3 ′′ 1 , 3 ′′ 2 and 3 ′′ 3 and the joints 7, 7 'and 7 ".
- FIG. 5 is a top view of such Slip ring shown, with the viewing direction vertical to the axis and perpendicular to the diameter of the slip ring is.
- the sliding layer 3 is on the slip ring base 2 in glued several segments, here a joint 8 can be seen between two segments of the sliding layer.
- the Angle ⁇ of the joint 8 against the tangent is 60 °.
- FIG. 6 shows a top view like FIG. 5 another preferred embodiment in which the Sliding layer forming ring 3 is slotted.
- the angle ⁇ the slot 9 with respect to the tangent is preferably so chosen that the slot along a spiral line on the The outer surface of the cylindrical sliding layer runs and the Length of the slot is greater than the circumference of the lateral surface is.
- the slotted sliding layer 3 is then glued to the slip ring base 2 so that it lies flush and the width of the slot 9 as possible is low.
- the acute angle ⁇ (small angle) of the Slit 9 further minimized with respect to the tangent possible bumps or bumps and thereby reduces the Abrasion.
- the slip ring body from the comparative example (with a diameter of 280 mm) was clamped centrally on a lathe and the slip rings made of steel were turned to an outer diameter of 270 mm.
- three ring segments were made of an isostatically pressed graphite of the brand 300 from SGL CARBON GmbH with the dimensions: inside diameter 270 mm, outside diameter 282 mm, width 30 mm with the help of a phenolic resin as an adhesive, which was coated with copper powder Type FFL from the company Norddeutsche Affinerie was filled (composition: 50% by weight resin, 50% by weight copper powder), glued on.
- the joints between the segments were designed with a slope of 60 °.
- the slip ring body was again clamped centrally and turned to an outer diameter of 280 mm.
- the slip ring body was reinstalled in the engine.
- the brushes were exchanged for graphite brushes of the RE65 brand from SGL CARBON GmbH.
- the same measurements as in the comparative example were carried out. The results are summarized in the table.
- comparison example brush RC53 RE65 Sliding layer Steel X10Cr13 Isographite 300 Wear brush 0.3 mm / 100 h ⁇ 0.05 mm / 100 h Wear ring not measurable not measurable
- the slip ring arrangement according to the example according to the example could even be carried out up to approximately 3.5 times the rated current, which corresponds to a current density of 40 A / cm 2 over the slip ring arrangement according to the invention. Even at this even higher load, no damage to the slip rings and brushes (firing the brushes) of the arrangement according to the invention could be observed.
- a major advantage of the slip ring arrangement according to the invention is that the slip rings almost without Exchange can be used. Only the sliding layer can be renewed if necessary without however, the metallic slip ring base is noteworthy to attack. In contrast, the previously used metallic slip rings to be renewed over time because every time you maintain the electrical Machines to replace the bearings had to be turned off around the scoring on the slip ring surface compensate.
Landscapes
- Motor Or Generator Current Collectors (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10009007A DE10009007B4 (de) | 2000-02-25 | 2000-02-25 | Schleifringkörper für eine Schleifringanordnung für elektrische Motoren und Generatoren |
DE10009007 | 2000-02-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1133028A2 true EP1133028A2 (fr) | 2001-09-12 |
EP1133028A3 EP1133028A3 (fr) | 2003-01-29 |
EP1133028B1 EP1133028B1 (fr) | 2007-01-24 |
Family
ID=7632470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01103814A Expired - Lifetime EP1133028B1 (fr) | 2000-02-25 | 2001-02-16 | Dispositif bague collectrice pour moteurs électriques et générateurs |
Country Status (10)
Country | Link |
---|---|
US (1) | US6400057B2 (fr) |
EP (1) | EP1133028B1 (fr) |
AR (1) | AR027549A1 (fr) |
AT (1) | ATE352895T1 (fr) |
BR (1) | BR0100825A (fr) |
CA (1) | CA2337978A1 (fr) |
CZ (1) | CZ301293B6 (fr) |
DE (2) | DE10009007B4 (fr) |
ES (1) | ES2281383T3 (fr) |
PL (1) | PL203741B1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009003902A1 (fr) * | 2007-06-30 | 2009-01-08 | Robert Bosch Gmbh | Machine électrique |
WO2011026834A1 (fr) * | 2009-09-04 | 2011-03-10 | Schunk Kohlenstofftechnik Gmbh | Dispositif de bague collectrice |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10106119A1 (de) * | 2001-02-08 | 2002-09-19 | Schunk Metall & Kunststoff | Stromübertragungsanordnung |
DE10161740B4 (de) * | 2001-12-15 | 2006-01-26 | Stemmann-Technik Gmbh | Schleifringübertrager |
DE10315663A1 (de) * | 2003-04-04 | 2004-10-28 | Schleifring Und Apparatebau Gmbh | Schleifring mit Kohlebahn |
US20070077783A1 (en) * | 2005-09-30 | 2007-04-05 | Trw Automotive U.S. Llc | Rotary connector system |
EP1793459A1 (fr) * | 2005-12-01 | 2007-06-06 | Siemens Aktiengesellschaft | Arbre avec une bague de collecteur pour un générateur électrique |
US7750493B2 (en) * | 2007-08-14 | 2010-07-06 | General Electric Company | Wind turbine assemblies and slip ring assemblies for wind blade pitch control motors |
DE102010002089B4 (de) * | 2010-02-18 | 2012-02-16 | Siemens Aktiengesellschaft | Schleifringvorrichtung für eine elektrische Maschine |
US8674581B2 (en) | 2011-01-05 | 2014-03-18 | General Electric Company | Systems, methods, and apparatus for shorting slip rings of an induction motor |
US8558429B2 (en) | 2011-01-05 | 2013-10-15 | General Electric Company | Systems, methods, and apparatus for lifting brushes of an induction motor |
US8525383B2 (en) * | 2011-02-17 | 2013-09-03 | Mitsubishi Electric Corporation | Slip ring device and rotary electric machine using the same |
EP2838166B1 (fr) * | 2013-08-16 | 2019-09-25 | Schleifring GmbH | Ensemble de bague collectrice et composants associés |
US9866035B2 (en) | 2015-03-27 | 2018-01-09 | Irobot Corporation | Rotatable coupling |
DE102016203762A1 (de) * | 2016-03-08 | 2017-09-14 | Krones Ag | Schleifringübertrager für Rundläufermaschinen |
ES2866408T3 (es) * | 2018-08-21 | 2021-10-19 | Flender Gmbh | Puente de anillo colector, unidad de anillo colector, máquina eléctrica y turbina eólica |
WO2020219416A1 (fr) | 2019-04-24 | 2020-10-29 | Cr Flight L.L.C. | Ensemble bague collectrice avec bandes de transmission de puissance appariées |
DE102019115959A1 (de) * | 2019-06-12 | 2020-12-17 | Seg Automotive Germany Gmbh | Schleifringsystem und elektrische Maschine |
CA3184623A1 (fr) * | 2020-06-01 | 2021-12-09 | Cr Flight L.L.C. | Transformateur electrique rotatif a lubrifiant prefere |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE875234C (de) * | 1942-04-26 | 1953-04-30 | Siemens-Schuckertwerke | Kohleschleifring |
DE2838144A1 (de) * | 1978-09-01 | 1980-03-13 | Ringsdorff Werke Gmbh | Kohlebuersten fuer rotierende elektrische maschinen |
US4406961A (en) * | 1981-05-27 | 1983-09-27 | Robert Bosch Gmbh | Slip ring assembly |
EP0234427A2 (fr) * | 1986-02-28 | 1987-09-02 | Hoffmann & Co. Elektrokohle KG | Balai de charbon à deux composants |
US5224138A (en) * | 1991-01-28 | 1993-06-29 | Kabushiki Kaisha Toshiba | Slip ring device |
EP0762607A2 (fr) * | 1995-09-06 | 1997-03-12 | Nippondenso Co., Ltd. | Alternateur |
WO1999035720A1 (fr) * | 1997-12-31 | 1999-07-15 | Schleifring Und Apparatebau Gmbh | Dispositif pour transmettre des signaux et/ou de l'energie electriques |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE136500C (fr) * | ||||
DE890986C (de) * | 1944-06-01 | 1953-09-24 | Fa.C.Conradty | Kohleschleifring mit Ableitung |
US3042998A (en) * | 1957-05-06 | 1962-07-10 | Sperry Gyroscope Co Ltd | Slip ring assembly |
US3668451A (en) * | 1970-08-14 | 1972-06-06 | Ian Roderick Mcnab | Electrical brush structure |
GB1333165A (en) * | 1971-01-21 | 1973-10-10 | Ver Volkseigener Betriebe Elek | Slip ring assembly for electric machines |
US3686514A (en) * | 1971-07-16 | 1972-08-22 | Ney Co J M | Slip ring assembly |
DE2316796A1 (de) * | 1973-04-04 | 1974-10-17 | Carbone Ag | Kohlebuerste |
US3886386A (en) * | 1973-08-01 | 1975-05-27 | Gen Electric | Carbon fiber current collection brush |
DE2443769C2 (de) * | 1974-09-13 | 1982-08-26 | Robert Bosch Gmbh, 7000 Stuttgart | Schleifringe für elektrische Maschinen |
DE2817317A1 (de) * | 1978-04-20 | 1979-10-25 | Siemens Ag | Stromuebertragungsbuerste |
DE2817371C2 (de) * | 1978-04-20 | 1982-08-12 | Siemens AG, 1000 Berlin und 8000 München | Stromübertragungsbürste |
DE2944065A1 (de) * | 1979-10-31 | 1981-05-14 | Siemens AG, 1000 Berlin und 8000 München | Stromuebertragungsbuerste mit graphitfolien |
US4415635A (en) * | 1980-04-09 | 1983-11-15 | The University Of Virginia | Electric brush |
ZA8233B (en) * | 1981-01-15 | 1982-11-24 | Lucas Industries Ltd | Sliding contact assemblies for rotary electric machines |
DD248909A1 (de) * | 1986-03-03 | 1987-08-19 | Dessau Elektromotorenwerk | Schleifringkoerper mit kohlegleitring, insbesondere fuer hohe spezifische belastungen |
DD258687A1 (de) * | 1986-04-09 | 1988-07-27 | Dessau Elektromotorenwerk | Schleifringkoerper fuer elektrische maschinen, insbesondere mit kohleschleifringen |
US5124608A (en) * | 1991-01-25 | 1992-06-23 | Quality Aero Technology, Inc. | Low-noise slip ring assembly |
DE19603378A1 (de) * | 1996-01-31 | 1997-08-07 | Bosch Gmbh Robert | Schleifringanordnung |
-
2000
- 2000-02-25 DE DE10009007A patent/DE10009007B4/de not_active Expired - Fee Related
-
2001
- 2001-02-14 US US09/783,182 patent/US6400057B2/en not_active Expired - Fee Related
- 2001-02-16 EP EP01103814A patent/EP1133028B1/fr not_active Expired - Lifetime
- 2001-02-16 DE DE50111920T patent/DE50111920D1/de not_active Expired - Fee Related
- 2001-02-16 AT AT01103814T patent/ATE352895T1/de active
- 2001-02-16 ES ES01103814T patent/ES2281383T3/es not_active Expired - Lifetime
- 2001-02-21 CZ CZ20010670A patent/CZ301293B6/cs not_active IP Right Cessation
- 2001-02-21 PL PL345985A patent/PL203741B1/pl not_active IP Right Cessation
- 2001-02-22 BR BR0100825-0A patent/BR0100825A/pt not_active IP Right Cessation
- 2001-02-23 CA CA002337978A patent/CA2337978A1/fr not_active Abandoned
- 2001-02-23 AR ARP010100846A patent/AR027549A1/es unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE875234C (de) * | 1942-04-26 | 1953-04-30 | Siemens-Schuckertwerke | Kohleschleifring |
DE2838144A1 (de) * | 1978-09-01 | 1980-03-13 | Ringsdorff Werke Gmbh | Kohlebuersten fuer rotierende elektrische maschinen |
US4406961A (en) * | 1981-05-27 | 1983-09-27 | Robert Bosch Gmbh | Slip ring assembly |
EP0234427A2 (fr) * | 1986-02-28 | 1987-09-02 | Hoffmann & Co. Elektrokohle KG | Balai de charbon à deux composants |
US5224138A (en) * | 1991-01-28 | 1993-06-29 | Kabushiki Kaisha Toshiba | Slip ring device |
EP0762607A2 (fr) * | 1995-09-06 | 1997-03-12 | Nippondenso Co., Ltd. | Alternateur |
WO1999035720A1 (fr) * | 1997-12-31 | 1999-07-15 | Schleifring Und Apparatebau Gmbh | Dispositif pour transmettre des signaux et/ou de l'energie electriques |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009003902A1 (fr) * | 2007-06-30 | 2009-01-08 | Robert Bosch Gmbh | Machine électrique |
WO2011026834A1 (fr) * | 2009-09-04 | 2011-03-10 | Schunk Kohlenstofftechnik Gmbh | Dispositif de bague collectrice |
Also Published As
Publication number | Publication date |
---|---|
US6400057B2 (en) | 2002-06-04 |
EP1133028A3 (fr) | 2003-01-29 |
DE10009007A1 (de) | 2001-09-13 |
EP1133028B1 (fr) | 2007-01-24 |
ATE352895T1 (de) | 2007-02-15 |
CZ2001670A3 (cs) | 2001-10-17 |
DE10009007B4 (de) | 2004-02-05 |
DE50111920D1 (de) | 2007-03-15 |
ES2281383T3 (es) | 2007-10-01 |
PL345985A1 (en) | 2001-08-27 |
BR0100825A (pt) | 2002-07-23 |
US20010033117A1 (en) | 2001-10-25 |
PL203741B1 (pl) | 2009-11-30 |
CA2337978A1 (fr) | 2001-08-25 |
CZ301293B6 (cs) | 2010-01-06 |
AR027549A1 (es) | 2003-04-02 |
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