Preform, hydroforming method, and hydroformed product

Details Preform, hydroforming method, and hydroformed product Preform, hydroforming method, and hydroformed product

2011-01-04

2011-01-04

Chilcot, Jr., Richard E (Department: 3635)

Static structures (e.g., buildings)

Elongated rigid structure

Made up of longitudinally arranged strip-like sections

C052S079800

Reexamination Certificate

active

07861489

ABSTRACT:
A preform having edges overlapped and jointed, two outer members for forming outer surfaces of a hydroformed product, and reinforcement members for forming reinforcement ribs that divide a hollow cross section of the hydroformed product, including a joint formed by, when more than three sheet materials for forming the outer members and the reinforcement members are overlapped together, welding a first sheet material on a surface of the overlapped sheet materials to a second sheet material positioned inside the first sheet material, and a space disposed and aligned with a joint plane between the second sheet material and a third sheet material located inside the second sheet material during the welding process.

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