Invention Grant
- Patent Title: Constrained forming of contoured composite hat stringers
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Application No.: US18306432Application Date: 2023-04-25
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Publication No.: US12070892B2Publication Date: 2024-08-27
- Inventor: Steven Joseph Plummer , Kurtis Shuldberg Willden , Megan E. Bliss
- Applicant: The Boeing Company
- Applicant Address: US VA Arlington
- Assignee: The Boeing Company
- Current Assignee: The Boeing Company
- Current Assignee Address: US IL Chicago
- Agency: Yee & Associates, P.C.
- The original application number of the division: US17447593 2021.09.14
- Main IPC: B29C70/56
- IPC: B29C70/56 ; B29C51/00 ; B29C51/08 ; B29C51/20 ; B29C51/28 ; B29C70/28 ; B29C70/46 ; B29L31/00 ; B29L31/30

Abstract:
Cap wrinkling in a contoured composite hat stringer is reduced by constraining the cap as the hat stringer is being formed from a flat composite charge. The cap is constrained by an inflatable bladder placed in a tool set used to form the composite charge.
Public/Granted literature
- US20230256663A1 Constrained Forming of Contoured Composite Hat Stringers Public/Granted day:2023-08-17
Information query
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