US 12,469,621 B1
Fire resistant radiating coaxial cable
William E. Rogers, Danville, CA (US)
Assigned to American Fire Wire, Inc., Minden, NV (US)
Filed by American Fire Wire, Inc., Minden, NV (US)
Filed on Sep. 24, 2024, as Appl. No. 18/894,981.
Int. Cl. H01B 7/295 (2006.01); H01B 3/12 (2006.01); H01B 3/47 (2006.01); H01B 5/12 (2006.01); H01B 7/02 (2006.01); H01B 7/18 (2006.01); H01B 11/18 (2006.01); H01B 13/06 (2006.01)
CPC H01B 7/295 (2013.01) [H01B 3/12 (2013.01); H01B 3/47 (2013.01); H01B 5/12 (2013.01); H01B 7/0266 (2013.01); H01B 7/184 (2013.01); H01B 7/1875 (2013.01); H01B 11/1847 (2013.01); H01B 13/067 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fire resistant radiating coaxial cable apparatus comprising:
a center conductor;
an outer conductor having a circumference with apertures, the outer conductor surrounding the center conductor; and
a high silica fiberglass yarn between the center conductor and the outer conductor, the fiberglass yarn having a mass fraction of silica (SiO2) between 95.0% and 96.5%, a mass fraction of aluminum oxide (Al2O3) greater than 3%, and a mass fraction of calcium oxide (CaO) less than 0.5%, the fiberglass yarn being configured to maintain a predetermined dielectric spacing between the center conductor and the outer conductor when exposed to heat at or above 1010° C.