| 20110233923 | CONNECTED STRUCTURE OF VACUUM DOUBLE PIPE, VACUUM DOUBLE PIPE, AND JOINT OF VACUUM DOUBLE PIPE - This invention provides a connected structure of vacuum double pipes. The connected structure comprises a plurality of vacuum double pipes and a joint configured to connect the plurality of vacuum double pipes. The vacuum passage is open at both end in an extension direction of the inner pipe and sealed between the both ends. The joint includes an inner pipe joint unit having inner pipe connectors and an outer pipe joint unit having outer pipe connectors. The evacuation passage is sealed between the outer pipe connectors that connect the vacuum passages of the outer pipes. | 09-29-2011 |
