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US 4,243,833 AGranted
Carbon electrode for arc lamp
OwnerNagaichi Sugainventor
Life of this patent
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Abstract
A carbon electrode for an arc lamp comprising a plurality of carbon rods joined together in desired length by use of an adhesive comprising metal or carbon powder or mixture thereof and method for preparation of said electrode.
Claims8
A carbon electrode for an arc lamp employed in weathering tests which comprises a plurality of carbon rods joined together lengthwise by the use of an adhesive, said adhesive comprising a metal powder, a binder resin bondable to carbon and a solvent for said resin,
- said adhesive increasing in resistance with increasing temperature so as to compensate for the decrease in resistance with reduction in length of said electrode as it is consumed, whereby a stable spectral distribution is emitted.
Dependencies are inferred from the claim text.