GB722122A - Improved electrical contact brush - Google Patents

Improved electrical contact brush

Info

Publication number
GB722122A
GB722122A GB974952A GB974952A GB722122A GB 722122 A GB722122 A GB 722122A GB 974952 A GB974952 A GB 974952A GB 974952 A GB974952 A GB 974952A GB 722122 A GB722122 A GB 722122A
Authority
GB
United Kingdom
Prior art keywords
brush
carbon
per cent
graphite
contact brush
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
GB974952A
Inventor
Leonard Ellwood Jones
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.)
Union Carbide Corp
Original Assignee
Union Carbide and Carbon Corp
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 Union Carbide and Carbon Corp filed Critical Union Carbide and Carbon Corp
Priority to GB974952A priority Critical patent/GB722122A/en
Publication of GB722122A publication Critical patent/GB722122A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

An electrical contact brush consisting principally of carbon or graphite contains a coumarone-indene resin. The resin should have a melting-point between 70 DEG and 150 DEG C. and should be present in amounts of 5-20 per cent, preferably 8-15 per cent. The contact brush may be carbon, natural or artificial graphite, electrographitic material or mixtures of graphite with carbon or metal. The brush may be impregnated by placing it first under vacuum and then under pressure of a 50 per cent solution of coumarone-indene resins in toluene. The brush is then dried and baked, e.g. for 1 hour at 150 DEG C.ALSO:An electrical contact brush consisting principally of carbon or graphite contains a coumaroneindene resin. The resin should have a melting point between 70 DEG and 150 DEG C. and should be present in amounts of 5-20 per cent., preferably 8-15 per cent. The contact brush may be carbon, natural or artificial graphite, electrographitic material, or mixtures of graphite with carbon or metal. The brush may be impregnated by placing it first under vacuum and then under pressure of a 50 per cent. solution of coumarone-indene resins in toluene. The brush is then dried and baked, e.g. for one hour at 150 DEG C.
GB974952A 1952-04-18 1952-04-18 Improved electrical contact brush Expired GB722122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB974952A GB722122A (en) 1952-04-18 1952-04-18 Improved electrical contact brush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB974952A GB722122A (en) 1952-04-18 1952-04-18 Improved electrical contact brush

Publications (1)

Publication Number Publication Date
GB722122A true GB722122A (en) 1955-01-19

Family

ID=9878024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB974952A Expired GB722122A (en) 1952-04-18 1952-04-18 Improved electrical contact brush

Country Status (1)

Country Link
GB (1) GB722122A (en)

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