Incandescent illuminating device with antifragility coating
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United States of America Patent
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-
Jul 10, 1984
Grant Date -
N/A
app pub date -
Nov 8, 1982
filing date -
Nov 8, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An incandescent illuminating device having an antifragility coating covering at least a substantial portion of the glass envelope, the antifragility coating comprising a mixture of a relatively clear, resilient heat-stable polymer capable of adhering to glass and a plurality of light-transmitting, impact-absorbing particles, which are preferably small, hollow, heat-stable, frangible microspheres. The particles, preferably hollow microspheres, constitute from about 20% to about 60% by volume of the cured antifragility coating and are essentially colorless, have a high degree of light transmissivity, and have a low density and a diameter less than about the thickness of the antifragility coating. The particles act as a sacrificial material to absorb an impact giving the coating antifragility properties.
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