United Technologies Corporation

Robert B Richardson

Steven J Feigleson

Robert J Kildea

Keith T Honda

Michael E McMahon

Kevin A Walton

Steven J Ford

Kevin C Eckland

Christopher G Demers

Michael A Servadio

Jorge A Alcorta

Kishore Kumar Madduri

Chandrashekar Vaddatti

Ramesh Ankam

A stator vane assembly for a gas turbine engine is disclosed and includes a plurality of vanes received within channels defined within a case. An anti-rotation plate extends from a flange of the case between adjacent ones of the plurality of vanes for preventing rotation of the plurality of vanes relative to the case.

Stator anti-rotation device

A stator assembly for a rotary machine having a shroud for a stator vane is disclosed. Various construction details are developed which limit movement of the stator vane into the flowpath by reason of the stator vane being restrained by the shroud. In one particular embodiment, a clip member extends through an opening in the tip of the vane and is disposed at a location adjacent a nonflowpath surface of the shroud to restrain the tip of the vane against inward movement through the shroud.

Stator assembly for a rotary machine and clip member for a stator assembly

Concentric, counterrotating shafts include means for bringing oil from within the inner shaft across an annular gap between the two shafts into oil scoops which rotate with the outer shaft. To minimize the splashing of oil as it travels across the annular gap between the two shafts a plurality of separate, circumferentially spaced apart oil compartments are disposed around the outer circumference of the inner shaft and rotate therewith. Oil from within the inner shaft travels radially outwardly through passageways in the shaft into the oil compartments whereupon the radial velocity of the oil is reduced to zero. The oil leaves the compartment through outlets and is slung across the gap between the shafts whereupon it is captured by oil scoops and is fed to its final destination, such as to a bearing race disposed radially outwardly of the outer shaft. By reducing the radial velocity of the oil to zero after it is passed through the inner shaft and prior to its being slung across the annular gap between the shafts, the amount of splashing of the oil is reduced.

Means for feeding oil between counterrotating shafts

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Kennebunk, ME, United States of America

Robert B Richardson