Composite coil spring
US9982734B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 2017 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | May 2, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G11/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite coil spring includes a coil body that has a core and fiber layers impregnated with a polymer material. The fiber layers are wound around the core. The fiber layers extend around the coiled axis at oblique fiber angles. Each of the fiber layers includes a number of fibers that is a product of a common base number of fibers multiplied by a positive non-zero integer from a set of positive non-zero integers from 1 to 20. The positive non-zero integer of at least one of the fiber layers is different from the positive non-zero integer of at least one other of the fiber layers. At least one of the fibers layers is glass fibers and another of the fiber layers is carbon fibers, and each of an innermost fiber layer and an outmost fiber layer of the fiber layers is independently selected from glass fibers and carbon fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.