Reinforced blade and spar
US10407159B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2017 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Mar 1, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2603/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A spar for a propeller blade comprises central structural member extending from a root to a tip of the spar. A first portion of the central structural member extends from the root of the spar and a second portion extends from the tip and adjoins the first portion. The central structural member includes a first plurality of plies of composite material on a pressure side thereof and a second plurality of plies of composite material on a suction side thereof wherein the first plurality of plies are in contact with the second plurality of plies in the second portion from a leading edge to a trailing edge thereof. A plurality of yarns extends through the central structural member in at least the second portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.