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US 2018/0135757 A1Published application
Vacuum double structure and heat treat furnace
AssigneeToyota Jidosha Kabushiki Kaisha
InventorOsamu YAMASHITA
Life of this patent
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Abstract
A vacuum double structure includes: a tubular and metal inner wall member; a tubular and metal outer wall member in which the inner wall member is accommodated; and a sealing member provided between a facing surface of the inner wall member and a facing surface of the outer wall member. The sealing member includes an annular spacer, a first annular packing material, and a second annular packing material. The annular spacer is provided between the facing surface of the inner wall member and the facing surface of the outer wall member.
Claims3
A vacuum double structure comprising:
- a tubular and metal inner wall member;
- a tubular and metal outer wall member in which the inner wall member is accommodated;
- and
- a sealing member provided between a facing surface of the inner wall member and a facing surface of the outer wall member, wherein
- the sealing member includes an annular spacer, a first annular packing material, and a second annular packing material;
- the annular spacer is provided between the facing surface of the inner wall member and the facing surface of the outer wall member;
- the first annular packing material is accommodated in a first groove formed on a first opposed surface of the spacer with respect to the facing surface of the inner wall member and abuts with the facing surface of the inner wall member;
- the second annular packing material is accommodated in a second groove formed on a second opposed surface of the spacer with respect to the facing surface of the outer wall member and abuts with the facing surface of the outer wall member;
- and
- the sealing member maintains a space between the inner wall member and the outer wall member in a vacuum state.
7 more elements
Dependencies are inferred from the claim text.