Member having screw thread made from carbon fiber-reinforced composite material
AssigneeHardlock Industry Co., Ltd.
InventorKatsuhiko Wakabayashi
Life of this patent
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Abstract
A member with threads is provided that is made of a carbon-fiber-reinforced composite material with improved strength. Carbon fibers each extending in the axial direction across at least two threads appearing in a longitudinal cross section are embedded in the at least two threads in a zigzag manner along the surface shape of the at least two threads appearing in a longitudinal cross section. Preferably, the member is a nut, where the above-described structure is embedded in the threads of the female threadform of the nut, thereby providing a nut that is lightweight and exhibits improved strength.
Claims4
A method of manufacturing a threaded cylinder with threads made of a carbon-fiber-reinforced composite material, comprising:
- forming a corrugated plate made of carbon-fiber-reinforced plastics by using a press machine which includes an upper mold half and a lower mold half, those faces of the upper and lower mold halves which face each other being each provided with a mold face with a corrugated cross-sectional shape;
- and
- curling the corrugated plate to provide the thread cylinder in which multiple carbon fibers each extending in an axial direction across at least two threads appearing in a longitudinal cross section is embedded in the at least two threads in a zigzag manner along a surface shape of the at least two threads appearing in a longitudinal cross section.
2-7. (canceled)
Dependencies are inferred from the claim text.