US 11,441,646 B2Granted

Mechanism for driving blade orientation adjustment bodies

AssigneeSafran Aircraft Engines

InventorPierre-Alain Francis Claude Sebrecht

Life of this patent

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Abstract

A mechanism for driving a first member for adjusting the orientation of the blades of a first stage of a turbine engine diffuser and a second member for adjusting the orientation of the blades of a second stage of the turbine engine diffuser, including a single drive wheel which simultaneously drives the first adjustment member and the second adjustment member and a set of gears which is arranged between the drive wheel and the two adjustment members, wherein the set of gears includes a first gearwheel which is directly coupled with the drive wheel and with the first adjustment member and which is coupled with the second adjustment member with a secondary gearwheel which is directly coupled with the second adjustment member.

Claims10

Dependent claims

A drive mechanism for driving a first adjustment device for adjusting the orientation of the vanes in a first stage of a guide vanes assembly of a turbomachine and for driving a second adjustment device for adjusting the orientation of the vanes in a second stage of the guide vanes assembly of the turbomachine,

wherein each of the first and second adjustment devices consists of a ring associated with each stage of the guide vanes assembly, wherein a first axial end of each adjustment device comprises a toothed portion that cooperates with a toothed wheel supported by each vane,
wherein the drive mechanism comprises a single drive wheel that simultaneously drives the first adjustment device and the second adjustment device and comprises a set of gears that is arranged between the drive wheel and the two adjustment devices,
wherein the set of gears comprises a first toothed wheel that is directly coupled with the drive wheel and with the first adjustment device and that is coupled with the second adjustment device through a secondary toothed wheel that is directly coupled with the second adjustment device and is directly coupled with the first toothed wheel.

Dependencies are inferred from the claim text.

Facts

Application: 16/339,869Filed 6 Oct 2017
Priority: FR 16 597037 Oct 2016
Published: US 2019/0242465 A18 Aug 2019
Granted: 13 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

F16H 19/001
Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion: for…
F01D 17/162
By means of nozzle vanes: for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line
F04D 29/563
Adjustable: specially adapted for elastic fluid pumps
F16H 37/065
With a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts: with a plurality of…

Family

US 2019/0242465 A1Pre-grant publication · published 8 Aug 2019
US 11,441,646 B2This patent

From the US filing history. Foreign family members aren’t listed.

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