US 11,987,367 B2
Type 8 heater mat
Stephen Goodfellow Jones, Redditch (GB)
Assigned to GKN Aerospace Services Limited, Redditch (GB)
Appl. No. 17/043,749
Filed by GKN Aerospace Services Limited, Redditch (GB)
PCT Filed Apr. 5, 2019, PCT No. PCT/GB2019/051013
§ 371(c)(1), (2) Date Sep. 30, 2020,
PCT Pub. No. WO2019/193367, PCT Pub. Date Oct. 10, 2019.
Claims priority of application No. 1805654 (GB), filed on Apr. 5, 2018.
Prior Publication US 2021/0031929 A1, Feb. 4, 2021
Int. Cl. B64D 15/12 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/28 (2006.01); B32B 37/20 (2006.01); B32B 38/00 (2006.01); C23C 4/129 (2016.01); H05B 3/18 (2006.01)
CPC B64D 15/12 (2013.01) [B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/285 (2013.01); B32B 37/203 (2013.01); B32B 38/0004 (2013.01); C23C 4/129 (2016.01); H05B 3/18 (2013.01); B32B 2255/10 (2013.01); B32B 2262/101 (2013.01); B32B 2264/107 (2013.01); B32B 2605/00 (2013.01); H05B 2203/013 (2013.01); H05B 2203/017 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An aerospace surface heating apparatus comprising:
opposing layers formed from a thermoplastic containing in excess of 20% by volume of an inorganic filler material; and
at least one electrically operable heating element located between the opposing layers;
wherein the heating element is encapsulated in an intermediate layer between the opposing layers, and the intermediate layer is a first and second thermoplastic layer on either side of the heating element, the thermoplastic layers including an inorganic filler material; and
wherein a percentage of inorganic filler material contained in the intermediate layer is less than a percentage of inorganic filler material in the opposing layers.