Gasket material and method of making
AssigneeGeneral Electric Company
InventorsDavid K. Tart, Mitchell M. Osteen
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Abstract
Felt gasket material comprising polyethylene terephthalate fibers and suitable for use in luminaires is provided with improved compression recovery properties at elevated operating temperatures of the luminaire by heating the gasket material preferably in the range of 160.degree. C to 200.degree. C for a sufficient time to heat-set the fibers.
Claims5
In a luminaire, an optical system comprising a reflector and a light transmitting closure defining a closed optical enclosure, means for mounting a lamp in said enclosure, and a gasket arranged between and compressed by said reflector and said light transmitting closure, said gasket formed of felt material comprising synthetic resin fibers which have been heated at a temperature of about 130.degree. C - 230.degree. C for a sufficient time to appreciably increase the compression recovery thereof.
Dependencies are inferred from the claim text.