Invention Grant
- Patent Title: Multilayer tube
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Application No.: US17313022Application Date: 2021-05-06
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Publication No.: US11919272B2Publication Date: 2024-03-05
- Inventor: Yorihiro Takimoto , Koji Mizutani , Soushi Satoh , Makoto Ito
- Applicant: Sumitomo Riko Company Limited
- Applicant Address: JP Aichi
- Assignee: Sumitomo Riko Company Limited
- Current Assignee: Sumitomo Riko Company Limited
- Current Assignee Address: JP Aichi
- Agency: JCIPRNET
- Priority: JP 19051693 2019.03.19
- Main IPC: B32B1/08
- IPC: B32B1/08 ; B32B3/26 ; B32B27/08 ; F16L9/133 ; F16L21/00

Abstract:
A multilayer tube (1) includes: an elastic layer (11, 21, 31, 41, 51) formed over the entire length of the multilayer tube (1) and having a predetermined flexural modulus of elasticity; and a hard layer (12, 22, 32, 42, 52) formed over the entire length of the multilayer tube (1), having a flexural modulus of elasticity that is high compared to the elastic layer (11, 21, 31, 41, 51), and disposed more to an outer layer side than the elastic layer (11, 21, 31, 41, 51). A first extremity (10) of the multilayer tube (1) is formed in such a manner that the thickness (H11) of the elastic layer (11) is thicker than the thickness (H12) of the hard layer (12).
Public/Granted literature
- US20210252823A1 MULTILAYER TUBE Public/Granted day:2021-08-19
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