US 12,232,226 B2
Extensible mast, production method therefor, photovoltaic paddle, and outer space structure
Kazunori Takagaki, Tokyo (JP); Sohei Samejima, Tokyo (JP); and Kazushi Sekine, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 18/012,239
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Aug. 3, 2020, PCT No. PCT/JP2020/029641
§ 371(c)(1), (2) Date Dec. 22, 2022,
PCT Pub. No. WO2022/029827, PCT Pub. Date Feb. 10, 2022.
Prior Publication US 2023/0254946 A1, Aug. 10, 2023
Int. Cl. H05B 3/36 (2006.01); B32B 3/08 (2006.01); B32B 5/02 (2006.01); B32B 5/26 (2006.01); B32B 7/027 (2019.01); B32B 37/06 (2006.01); B32B 37/20 (2006.01); B64G 1/10 (2006.01); B64G 1/22 (2006.01); B64G 1/44 (2006.01); H02S 30/20 (2014.01)
CPC H05B 3/36 (2013.01) [B32B 3/08 (2013.01); B32B 5/02 (2013.01); B32B 5/26 (2013.01); B32B 7/027 (2019.01); B32B 37/06 (2013.01); B32B 37/203 (2013.01); B64G 1/10 (2013.01); B64G 1/2225 (2023.08); B64G 1/443 (2013.01); H02S 30/20 (2014.12); B32B 2260/023 (2013.01); B32B 2260/046 (2013.01); B32B 2262/0269 (2013.01); B32B 2262/10 (2013.01); B32B 2262/101 (2013.01); B32B 2262/106 (2013.01); B32B 2457/12 (2013.01); H05B 2203/003 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An extensible mast comprising:
a first fiber layer made of a fiber-reinforced plastic;
a second fiber layer that is arranged in contact with the first fiber layer and made of a fiber-reinforced plastic having a thermal expansion coefficient in a longitudinal direction larger than a thermal expansion coefficient in the longitudinal direction of the fiber-reinforced plastic applied to the first fiber layer; and
an electric heating wire arranged on the second fiber layer, wherein
the electric heating wire is arranged on the second fiber layer such that when the first fiber layer, the second fiber layer, and the electric heating wire are wound and retracted in a roll shape at least one portion of the electric heating wire in one of a plurality of different layers of the roll shape does not overlap the electric heating wire in another of the plurality of different layers of the roll shape.