Multilayer composite limbs for an archery bow
US8635994B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2009 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Feb 11, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41B5/0068
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An archery bow comprises a central riser, first and second bow limbs attached to the riser, and a draw cable coupled to the bow limbs. Each bow limb comprises a multilayer composite structure having a compression layer, a tension layer, and an intermediate layer between the compression and tension layers, with the limbs arranged so that drawing the bow causes each limb to bend toward its corresponding compression layer. Each layer comprises corresponding fibers embedded in a corresponding polymer matrix. Elastic moduli of the compression and tension layers are each smaller than that of the intermediate layer. A method comprises attaching the first and second bow limbs to the riser and coupling the draw cable to the limbs. Another method can further comprise forming each bow limb by embedding the corresponding fibers of each layer in the corresponding polymer matrix, and curing the corresponding polymer matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.