US 11,942,233 B2
Fire resistant corrugated 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 Feb. 8, 2021, as Appl. No. 17/170,559.
Claims priority of provisional application 62/972,397, filed on Feb. 10, 2020.
Prior Publication US 2021/0249158 A1, Aug. 12, 2021
Int. Cl. H01B 3/08 (2006.01); H01B 3/12 (2006.01); H01B 3/46 (2006.01); H01B 11/18 (2006.01)
CPC H01B 11/1856 (2013.01) [H01B 3/087 (2013.01); H01B 3/12 (2013.01); H01B 3/46 (2013.01); H01B 11/1869 (2013.01); H01B 11/1895 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A fire resistant corrugated coaxial cable apparatus comprising:
a center conductor;
a corrugated outer conductor surrounding the center conductor; and
an alkaline earth silicate (AES) wool dielectric extending between the center conductor and the outer conductor, the AES wool dielectric being substantially devoid of chemically bound or free water and 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. in order to continue to propagate radio frequency (RF) signals therein.