GB1513868A - Graphite carbon brushes - Google Patents

Graphite carbon brushes

Info

Publication number
GB1513868A
GB1513868A GB4512575A GB4512575A GB1513868A GB 1513868 A GB1513868 A GB 1513868A GB 4512575 A GB4512575 A GB 4512575A GB 4512575 A GB4512575 A GB 4512575A GB 1513868 A GB1513868 A GB 1513868A
Authority
GB
United Kingdom
Prior art keywords
impregnated
ultraphosphate
graphite carbon
weight
metal
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
GB4512575A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB4512575A priority Critical patent/GB1513868A/en
Publication of GB1513868A publication Critical patent/GB1513868A/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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/12—Manufacture of brushes

Landscapes

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

Abstract

1513868 Graphite carbon brushes G N FRIDMAN J N VASILIEV A S FIALKOV V P SOSEDOV A A TARASOV Y G DAVIDOVICH N S VORONIN A G SHIROKOV A I SOKOLOVSKY A A KOZYREV R P BERLIZOVA E M KOZLOV A A BOIKO A N GUSEV O B KAZAKOVA V A FUGOL N V KALININA V M EMELYANOVA and B A GLUSKIN 31 Oct 1975 45125/75 Heading C1A An impregnated graphite carbon material useful for forming a brush for an electric machine, has a metal ultraphosphate compound and a sealing compound evenly distributed throughout-the entire volume thereof, the sealing compound being an organic file-forming polymer or mixture of two or more thereof which enhances the contact characteristics of the material. Suitably, a graphite carbon material is impregnated with an aqueous solution of a water-soluble metal chloride and orthophosphoric acid; the impregnated material dried in air, and then heat treated with a gradual rise in temperature to 500 to 600‹C. to form 0À1 to 15% by weight of a metal ultraphosphate, based on the initial weight of the material, in the pores of the material; the heat-treated material is then cooled and impregnated with a solution of a film-forming polymer resin to encapsulate the ultraphosphate and enhance the contact characteristics of the material; and the impregnated material is then heat-treated with a gradual rise in temperature to 180-250‹C. according to the polymer used, until the resin is fully polymerized, the dry residue of the polymer being from 0À5 to 10% by weight, based on the weight of the material after impregnation with the aqueous solution of the metal chloride and orthophosphoric acid and subsequent treatment to form the ultraphosphate. Specified metal chlorides include those of manganese, zinc, magnesium, lithium, potassium, aluminium, iron and lead, and specified polymers include those of unsaturated fatty acids, vegetable drying oils, polyesters, glyptal-melamine resins, epoxy resins, phenol-formaldehyde resins, furyl alcohol resins and polyamides. The use of a mixture of cobalt linoleate with a glyptal-melamine resin, is exemplified.
GB4512575A 1975-10-31 1975-10-31 Graphite carbon brushes Expired GB1513868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4512575A GB1513868A (en) 1975-10-31 1975-10-31 Graphite carbon brushes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4512575A GB1513868A (en) 1975-10-31 1975-10-31 Graphite carbon brushes

Publications (1)

Publication Number Publication Date
GB1513868A true GB1513868A (en) 1978-06-14

Family

ID=10435985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4512575A Expired GB1513868A (en) 1975-10-31 1975-10-31 Graphite carbon brushes

Country Status (1)

Country Link
GB (1) GB1513868A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101683977B (en) * 2008-09-28 2012-05-23 南京大学 Preparation method of mesoporous carbon material with high specific surface area

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101683977B (en) * 2008-09-28 2012-05-23 南京大学 Preparation method of mesoporous carbon material with high specific surface area

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee