GB1360357A - Electrical apparatus particularly electric current collection apparatus - Google Patents

Electrical apparatus particularly electric current collection apparatus

Info

Publication number
GB1360357A
GB1360357A GB4032672A GB4032672A GB1360357A GB 1360357 A GB1360357 A GB 1360357A GB 4032672 A GB4032672 A GB 4032672A GB 4032672 A GB4032672 A GB 4032672A GB 1360357 A GB1360357 A GB 1360357A
Authority
GB
United Kingdom
Prior art keywords
brush
holder
commutator
contact
electric current
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
GB4032672A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1360357A publication Critical patent/GB1360357A/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
    • H01R39/38—Brush holders
    • H01R39/40—Brush holders enabling brush movement within holder during current collection
    • 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
    • H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
    • 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
    • H01R39/46—Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/10—Arrangements of brushes or commutators specially adapted for improving commutation

Landscapes

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

Abstract

1360357 Current collecting GENERAL ELECTRIC CO 31 Aug 1972 [1 Sept 1971] 40326/72 Heading H2A Sparking at a brush/commutator contact is reduced by metal oxide varistor material, the material providing a low resistance current path at the moment a brush and commutator segment part contact, but rapidly increasing its resistance as the current level falls. In the embodiment of Fig. 2, the material is incorporated directly into a carbon brush 10 at its trailing edge 12, but in Fig. 3 (not shown) the material is independent (21) and separately spring loaded (22) to counteract differing wear rates. In the embodiment of Fig. 4, the entire brush holder 15 is formed of such material, and is maintained in contact with the commutator by a spring 17. In Figs. 5, 6 (not shown), the material forms only part of the holder (15a), or is separately attached to a holder (15b). The varistor material is a polycrystalline ceramic, e.g. zinc oxide with the addition of bismuth, aluminium, iron, magnesium or calcium oxides.
GB4032672A 1971-09-01 1972-08-31 Electrical apparatus particularly electric current collection apparatus Expired GB1360357A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17685271A 1971-09-01 1971-09-01

Publications (1)

Publication Number Publication Date
GB1360357A true GB1360357A (en) 1974-07-17

Family

ID=22646127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4032672A Expired GB1360357A (en) 1971-09-01 1972-08-31 Electrical apparatus particularly electric current collection apparatus

Country Status (5)

Country Link
US (1) US3742272A (en)
JP (1) JPS4835303A (en)
DE (1) DE2242529A1 (en)
FR (1) FR2152047A5 (en)
GB (1) GB1360357A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827550A (en) * 1971-08-14 1973-04-11
US4041339A (en) * 1975-11-10 1977-08-09 General Motors Corporation Dynamoelectric machine with brush holding structure
JPS5540114U (en) * 1978-09-08 1980-03-14
JPS5648996U (en) * 1980-09-18 1981-04-30
US4371803A (en) * 1980-09-29 1983-02-01 The Singer Company Commutator brush holder quadrature spring
US6924577B2 (en) * 2003-01-13 2005-08-02 Energy Conversion Systems Holdings, Llc Brush box assembly

Also Published As

Publication number Publication date
FR2152047A5 (en) 1973-04-20
JPS4835303A (en) 1973-05-24
US3742272A (en) 1973-06-26
DE2242529A1 (en) 1973-03-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees