EP 4174360 A1 20230503 - DOUBLE-SHELL TANK
Title (en)
DOUBLE-SHELL TANK
Title (de)
DOPPELWANDIGER TANK
Title (fr)
RÉSERVOIR À DOUBLE COQUE
Publication
Application
Priority
JP 2020025366 W 20200626
Abstract (en)
A double-shell tank includes: an inner shell having a spherical shell shape and including therein a storing portion that stores a liquid in a sealed state; an outer shell that covers the inner shell; and powdered thermal insulation that is filled in a space surrounded by an outer wall of the inner shell and an inner wall of the outer shell to become a heat insulating layer. A size of a top portion gap between the inner shell and the outer shell is equal to or more than a value obtained by adding a level difference to a size of a bottom portion gap between the inner shell and the outer shell, the level difference being a level difference between the powdered thermal insulation when the inner shell is in an empty state and the powdered thermal insulation when the liquid is in the inner shell.
IPC 8 full level
F17C 3/04 (2006.01); B65D 88/04 (2006.01)
CPC (source: EP KR)
B65D 88/04 (2013.01 - KR); F17C 3/04 (2013.01 - EP KR); F17C 3/08 (2013.01 - EP); B65D 88/04 (2013.01 - EP); B65D 90/022 (2013.01 - EP); F17C 2201/0104 (2013.01 - EP KR); F17C 2201/052 (2013.01 - EP KR); F17C 2203/0337 (2013.01 - EP); F17C 2203/0341 (2013.01 - KR); F17C 2203/0391 (2013.01 - EP KR); F17C 2203/0629 (2013.01 - EP KR); F17C 2221/012 (2013.01 - EP); F17C 2221/014 (2013.01 - EP); F17C 2221/033 (2013.01 - EP); F17C 2223/0161 (2013.01 - EP KR); F17C 2223/033 (2013.01 - EP KR); F17C 2260/033 (2013.01 - EP); F17C 2270/0105 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4174360 A1 20230503; EP 4174360 A4 20240320; CN 115720615 A 20230228; KR 20230024370 A 20230220; WO 2021260946 A1 20211230
DOCDB simple family (application)
EP 20941713 A 20200626; CN 202080102360 A 20200626; JP 2020025366 W 20200626; KR 20237001203 A 20200626