Helical layer structure and manufacturing method of helical layer structure
US10632669B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 7, 2017 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Jan 23, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31699
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Embodiments provide a helical layer structure including: a helical core member which is formed of a flexible, lengthy, flat plate-like core member and which is formed of a steel plate made of a metal material, such as iron; and a polymeric coating layer which is formed of a polymeric material such as a thermosetting elastic material or a thermoplastic elastic material, and which coats the helical core member. The manufacturing method of the helical layer structure includes: a feeding step of feeding a core member having flexibility; a supply step of supplying the polymeric material having fluidity; a coating step of coating the core member with the polymeric material; a cooling step of cooling a coated intermediate which is coated with the polymeric material; and a helix formation step of helically twisting the coated intermediate to form the helical layer structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.