Turbine engine accessory relay box

EP4747482A1Pending Publication Date: 2026-05-27SAFRAN TRANSMISSION SYST
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
SAFRAN TRANSMISSION SYST
Filing Date
2024-07-18
Publication Date
2026-05-27

AI Technical Summary

Technical Problem

The existing accessory relay boxes for turbomachines face challenges in compactness due to the need to accommodate equipment with different rotation speeds, leading to increased dimensions and complexity, particularly in space-constrained areas like around the high pressure compressor, where adding new equipment is difficult.

Method used

A compact accessory relay box design featuring a casing with a gear train comprising pinions with parallel axes, a primary shaft with a power transmission system including a crown with internal teeth and a toothed wheel that engages with these teeth, allowing for the mounting of equipment with different rotation speeds on a single stage, reducing the length, width, and height of the casing.

Benefits of technology

This design enhances compactness, reducing the overall size of the relay box, facilitating its integration into turbomachines by enabling the placement of equipment with varying rotation speeds on a single stage, thus addressing the space constraints and complexity issues of previous designs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure FR2024050992_23012025_PF_FP_ABST
    Figure FR2024050992_23012025_PF_FP_ABST
Patent Text Reader

Abstract

The present document relates to an accessory relay box (12) for an aircraft, comprising a casing (14), at least one gear train mounted in the casing (14), the gear train comprising a plurality of pinions (15) meshing with one another, at least one primary pinion (40) comprising a primary shaft (42) extending along a primary axis (X), characterised in that it comprises a transmission system (51) arranged at a first end (44a) of the primary shaft (42) and intended to transmit power to a piece of equipment (34), the power transmission system (51) comprising an internally toothed ring gear (54) and a toothed wheel (52) engaging with the internal toothing of the ring gear (54), the toothed transmission wheel (52) having as its axis of rotation at least one of the primary axis (X) and an axis (Y) parallel to the primary axis (X).
Need to check novelty before this filing date? Find Prior Art