United Technologies Corporation

Roger M Barnsby

Robert E Peters

Dwayne E Messerschmidt

Larry W Spires

J Axel Glahn

Kenneth L Allard

Albert Hunt McKibbin

Hsianmin Jen

Hslanmin F Jen

Rainer Werner Aufischer

Harold K Shaffer

Axel J Glahn

An oil scavenge system includes a tangential scavenge scoop and a settling area adjacent thereto which separately communicate with a duct which feeds oil into an oil flow path and back to an oil sump. A shield is mounted over the settling area to at least partially shield the collecting liquid oil from interfacial shear. A multiple of apertures are located through the shield to permit oil flow through the shield and into the duct. The scavenge scoop forms a partition which separates the duct into a first portion and a second portion. The first portion processes upstream air/oil mixture that is captured by the tangential scoop while the second portion receives the oil collected in the settling area.

Bifurcated oil scavenging bearing compartment within a gas turbine engine

Method of scavenging oil within a gas turbine engine

Bifurcated oil scavenge system for a gas turbine engine

The production of a bearing surface by coating a known bearing material directly on the surface of a gear bore. A process of coating bearing materials directly onto the surface of a gear and the product thereof. The surface is preferably the inner bore surface of a planet gear. The coating methods include sputtering and vapor deposition. The bearing material applied as a coating is preferably a copper-lead composition. The resultant gear having a bearing coating can be useful in any high density, high efficiency epicyclic gear train for aircraft, marine or land based power transmissions.

Method of making a coated planet gear journal bearing

Coated planet gear journal bearing and process of making same

Seal 20 and seal ring 26 form annulus 36 which collects weepage oil which is removed through holes 54. Air flow pumped by face 58 of seal ring 26 is minimized by locating flange 64 close to the outer radius of the seal ring, thereby facilitating collection of all weepage oil.

Rotating shaft seal

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Manchester, CT, United States of America

Roger M Barnsby