公开(公告)号：US11780151B2

公开(公告)日：2023-10-10

申请号：US16919472

申请日：2020-07-02

Applicant: Northrop Grumman Systems Corporation

Inventor： Vernon M. Benson ,  Peter G. Turner

IPC: B29C55/18 ,  B29C70/54 ,  B29C70/28 ,  B29C55/06 ,  B29K105/08 ,  B29C70/32

CPC classification number: B29C55/18 ,  B29C70/28 ,  B29C70/54 ,  B29C55/06 ,  B29C70/32 ,  B29K2105/08 ,  B29K2105/0872

Abstract: Apparatus and methods of stretch-forming material are provided. In one example embodiment, a variable material stretch-forming apparatus comprises a stretch-forming assembly configured to stretch-form at least one section of a sheet of material to a longer length than at least one other section of the sheet of material before the sheet of material is applied to a tool.

公开(公告)号：US11345066B2

公开(公告)日：2022-05-31

申请号：US16111553

申请日：2018-08-24

Applicant: Northrop Grumman Systems Corporation

Inventor： Peter G. Turner

IPC: B29C43/28 ,  B29C70/30 ,  B29C70/34 ,  B32B37/00 ,  C08J5/24 ,  B29C70/50 ,  B29C70/20 ,  B32B5/24 ,  B32B5/28 ,  B29C37/00 ,  B29C35/02 ,  B29C59/10 ,  B29C65/00 ,  B29C70/32 ,  B32B38/00 ,  B32B37/10

Abstract: Composite structures and methods of forming composite structures may include at least one ply of material extending along a length of the composite structure. The at least one ply of material includes sections of material extending along the length of the composite structure.