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公开(公告)号:US20220196509A1
公开(公告)日:2022-06-23
申请号:US17441719
申请日:2020-03-24
申请人: KUBOTA CORPORATION
发明人: Shozo KISHI , Yuito KOMARU , Koji KAMACHI , Masataka SHIMOMURA
摘要: A watertight testing device includes a cylindrical core fit into a pipe joint part, a first seal member for sealing between the outer surface of the core and the inner surface of one pipe, a second seal member for sealing between the outer surface of the core and the inner surface of the other pipe, a first pressing member for pressing and compressing the first seal member into a first seal-member insertion space, a second pressing member for pressing and compressing the second seal member into a second seal-member insertion space, a moving device for moving the first and second pressing members in a pipe axial direction, and a test fluid feeder for feeding a test fluid into a test space.