To provide a hollow extensible boom in which no structure exists in a hollow part surrounded by a member, equipment can be accommodated in the hollow part and hollow parts continuous in an axial direction can be utilized as a passage.
The hollow extensible boom is equipped with a plurality of annular spacers 12 having rigidity, a plurality of vertical straight members 13 by which a plurality of spacers 12 are coupled to one another in an axial direction with a prescribed space and which is elastically deformed between a developing state of being linearly extended in the axial direction and a contracted state of being contracted by bending along a contour of the spacer 12, a stretching member 14 which is diagonally provided to a coupling part between the adjacent spacer 12 and the adjacent vertical straight member 13 and at least whose one side is elastically extensible in an axial direction, and a hollow part 15 surrounded by the vertical straight member 13 and the stretching member 14.
NAGAI MASATAKA
TANAKA HIDEYUKI
NAGASHIMA TAKASHI
SAKURA TECHNOLOGY DEV CO LTD
NAGAI MASATAKA
TANAKA HIDEYUKI
NAGASHIMA TAKASHI
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
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