Electricity: transmission to vehicles – Conductors – Trolley
Patent
1974-05-08
1976-04-27
Ansher, Harold
Electricity: transmission to vehicles
Conductors
Trolley
174179, 191 39, 428388, 428415, 428417, 428422, B60M 500, B32B 2738, B32B 1704
Patent
active
039528480
ABSTRACT:
An electric insulator used as a section insulator directly inserted in an overhead contact wire comprises an elongate body of synthetic resin which is reinforced with glass fibres or other fibres of high tensile strength, and has substantially the whole of its exposed surface formed of one or more than one composition based on a cycloaliphatic resin cured with an acidic curing agent. At least one exposed resin surface (the running surface) that is continuous from end to end over at least a major portion of the length of the body is formed by a composition comprising the cured reaction product of 100 parts of a cycloaliphatic epoxy resin, 40-250 parts of an acidic hardener therefor and an effective amount of an accelerator and, dispersed in the said reaction product 50-400 parts of a mineral filler substantially wholly in the form of particles not greater in any dimension than 80 micrometers and 10-100 parts of a low-friction fluorocarbon polymer.
REFERENCES:
patent: 2001357 (1935-05-01), Guignard
patent: 3291899 (1966-12-01), Ward et al.
patent: 3467596 (1969-09-01), Hermann
patent: 3624318 (1971-11-01), Rekers
patent: 3760913 (1973-09-01), Payen
patent: 3786762 (1974-01-01), Corkum et al.
Littler Joseph
Walker Wilfred Arthur
Ansher Harold
Bicc Limited
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