GB1304522A - - Google Patents
Info
- Publication number
- GB1304522A GB1304522A GB1304522DA GB1304522A GB 1304522 A GB1304522 A GB 1304522A GB 1304522D A GB1304522D A GB 1304522DA GB 1304522 A GB1304522 A GB 1304522A
- Authority
- GB
- United Kingdom
- Prior art keywords
- laminations
- brush
- carbon
- layers
- flake
- 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
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)
- Brushes (AREA)
Abstract
1304522 Impregnating permeable materials NATIONAL RESEARCH DEVELOPMENT CORP 1 Dec 1970 [6 Sept 1969] 44198/69 Heading F2A [Also in Division C1] A carbon brush comprises an array of laminations of carbon fibre cloth aligned parallel to each other and bonded together by adhesive layers, electrically conducting metal particles being dispersed generally throughout the brush or concentrated in layers deposited as a backing on the carbon fibre cloth laminations. The laminations may be bonded together with an epoxy or a silicone resin suitably cured. Adjuvants, i.e. friction reducing additives, may comprise graphite or a combination of graphite and silver flake. The layers of metal particles may be produced by vapour deposition, spraying, or electroplating. Alternative bonding agents are polytetrafluoroethylene or a mixture of pitch and tar. The electrically conducting particles used may be silver flake or silver plated copper flake. The carbon cloth used is cut on the bias to prevent long fibres detaching during wear. Electrical connection may be made to the brush by metal spraying the ends remote from the contact surface and brazing on a top cap to the sprayed end.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4419869 | 1969-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1304522A true GB1304522A (en) | 1973-01-24 |
Family
ID=10432213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1304522D Expired GB1304522A (en) | 1969-09-06 | 1969-09-06 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1304522A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2423892A1 (en) * | 1978-04-20 | 1979-11-16 | Siemens Ag | ELECTRIC CURRENT TRANSMITTER BRUSH, WITH VERY LOW VOLTAGE DROP |
| DE4442617A1 (en) * | 1994-11-30 | 1996-06-13 | Frank Dietrich | Contact element for transmitting electric current or voltage to further component |
| WO1999035720A1 (en) * | 1997-12-31 | 1999-07-15 | Schleifring Und Apparatebau Gmbh | Assembly for transmitting electrical signals and/or energy |
-
1969
- 1969-09-06 GB GB1304522D patent/GB1304522A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2423892A1 (en) * | 1978-04-20 | 1979-11-16 | Siemens Ag | ELECTRIC CURRENT TRANSMITTER BRUSH, WITH VERY LOW VOLTAGE DROP |
| DE4442617A1 (en) * | 1994-11-30 | 1996-06-13 | Frank Dietrich | Contact element for transmitting electric current or voltage to further component |
| DE4442617C2 (en) * | 1994-11-30 | 1998-12-17 | Frank Dietrich | Use of a contact element for transmitting electrical voltage in a potentiometer |
| WO1999035720A1 (en) * | 1997-12-31 | 1999-07-15 | Schleifring Und Apparatebau Gmbh | Assembly for transmitting electrical signals and/or energy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |