IP Verse

Turbomachine Fan Flow-Straightener Vane, Turbomachine Assembly Comprising Such A Vane, And Turbomachine Equipped With Said Vane Or With Said Assembly

Patent No. EP3676480 (titled "Turbomachine Fan Flow-Straightener Vane, Turbomachine Assembly Comprising Such A Vane, And Turbomachine Equipped With Said Vane Or With Said Assembly") was filed by Safran Aircraft Engines on Aug 28, 2018. The application was issued on Oct 5, 2022.

Patent Summary

A flow-straightener vane for a bypass turbomachine comprises multiple vane sections stacked radially along a stacking line (L) between a root end and a tip end. Each section features tangentially opposed pressure-face and suction-face surfaces extending axially from an upstream leading edge to a downstream trailing edge. The profile chord length remains substantially constant from the root to the tip. The stacking line (L) is characterized by a curvature, located near the tip end in a plane passing through the longitudinal axis (X) and the stacking line, oriented from downstream to upstream. This continuous, progressive curvature reduces vortex formation and acoustic noise, optimizing the nacelle's drag and mass while maintaining a specific axial distance from fan blades.

Patent Family

Patent family tree
Statuses, jurisdictions and citation links are shared on request.

Patent Oppositions

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentative
RTXJul 5, 2023DEHNS

Dossier Documents

The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.

  • Date

    Description

EP3676480

SAFRAN AIRCRAFT ENGINES
Application Number
EP18769761A
Filing Date
Aug 28, 2018
Status
Granted And Under Opposition
Sep 2, 2022
Publication Date
Oct 5, 2022
External Links
Slate, Register , Google Patents