Vacuum double structure and heat treat furnace

US2018135757A1 · US · A1

Patent metadata
FieldValue
Publication numberUS-2018135757-A1
Application numberUS-201715794041-A
CountryUS
Kind codeA1
Filing dateOct 26, 2017
Priority dateNov 11, 2016
Publication dateMay 17, 2018
Grant date

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

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.

First claim

Opening claim text (preview).

What is claimed is: 1 . 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. 2 . The vacuum double structure according to claim 1 , wherein: the spacer is a member made of resin and having elasticity; and the spacer is supported by a metal belt-shaped ring provided on an inner peripheral surface of the spacer and a metal belt-shaped ring provided on an outer peripheral surface of the spacer. 3 . A heat treat furnace comprising: a first vacuum double structure according to claim 1 ; and a second vacuum double structure according to claim 1 , wherein the heat treat furnace has a structure in which a flange portion of an inner wall member of the first vacuum double structure and a flange portion of an inner wall member of the second vacuum double structure are placed to face each other via a third annular packing material.

Assignees

Inventors

Classifications

  • Arrangements of linings · CPC title

  • with means to prevent the extrusion of the packing · CPC title

  • Arrangements of heating devices · CPC title

  • provided with tension elements, e.g. elastic rings · CPC title

  • with metal reinforcement · CPC title

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What does patent US2018135757A1 cover?
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…
Who is the assignee on this patent?
Toyota Motor Co Ltd
What technology area does this patent fall under?
Primary CPC classification F16J15/3208. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Thu May 17 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).