GB1325434A - Current transfer brush - Google Patents

Current transfer brush

Info

Publication number
GB1325434A
GB1325434A GB1325434DA GB1325434A GB 1325434 A GB1325434 A GB 1325434A GB 1325434D A GB1325434D A GB 1325434DA GB 1325434 A GB1325434 A GB 1325434A
Authority
GB
United Kingdom
Prior art keywords
metal
fibre
aug
silver
current transfer
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.)
Expired
Application number
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.)
International Research and Development Co Ltd
Original Assignee
International Research and Development Co Ltd
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
Application filed by International Research and Development Co Ltd filed Critical International Research and Development Co Ltd
Publication of GB1325434A publication Critical patent/GB1325434A/en
Expired 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
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Abstract

1325434 Brushes for dynamo-electric machines INTERNATIONAL RESEARCH & DEVELOPMENT CO Ltd 11 Aug 1970 [14 Aug 1969] 40781/69 Heading H2A A current transfer brush 1 comprises a plurality of elements 4 each consisting of a refractory fibre 7, Fig. 2 (not shown), other than carbon, coated with metal. The fibre diameter is less than 12 x 10<SP>-6</SP> metre and the metal, which may be deposited by electroplating or vacuum deposition, has a thickness not greater than one tenth of the fibre diameter. The metal may be silver or an alloy of a noble metal, such as silver, and another metal, such as copper. The fibre material may be boron nitride or a metal oxide such as alumina. Alternatively glass fibre may be used. The elements 4 are held in contact by a metal casing 5. The brush combines high current density, e.g. 1000 amps/ inch<SP>2</SP> with a low rate of wear.
GB1325434D 1969-08-14 1969-08-14 Current transfer brush Expired GB1325434A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4078169 1969-08-14

Publications (1)

Publication Number Publication Date
GB1325434A true GB1325434A (en) 1973-08-01

Family

ID=10416580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1325434D Expired GB1325434A (en) 1969-08-14 1969-08-14 Current transfer brush

Country Status (3)

Country Link
DE (1) DE2039743A1 (en)
FR (1) FR2058117A5 (en)
GB (1) GB1325434A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269850A1 (en) * 1986-10-31 1988-06-08 American Cyanamid Company Copper coated fibers
US10418770B2 (en) 2016-05-31 2019-09-17 Bae Systems Land & Armaments L.P. Multi-directional high current slip ring

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817371C2 (en) * 1978-04-20 1982-08-12 Siemens AG, 1000 Berlin und 8000 München Power transmission brush
US4267476A (en) * 1979-06-25 1981-05-12 Westinghouse Electric Corp. Metal-solid lubricant brushes for high-current rotating electrical machinery
DE3239003A1 (en) * 1982-10-21 1984-04-26 Hübner Elektromaschinen AG, 1000 Berlin Carbon brush for electrical machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269850A1 (en) * 1986-10-31 1988-06-08 American Cyanamid Company Copper coated fibers
US10418770B2 (en) 2016-05-31 2019-09-17 Bae Systems Land & Armaments L.P. Multi-directional high current slip ring

Also Published As

Publication number Publication date
FR2058117A5 (en) 1971-05-21
DE2039743A1 (en) 1971-03-04

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees