Lufkin Industries, LLC

Rotating Machinery Technology, Inc.

Donald H Rockefeller

John C Nicholas

Joseph M Hart

Thomas P Shoup

Malcolm E Leader

James M Byrne

Improved bearing systems and methods for adjusting pivot offsets of bearing systems. The improved bearing systems and methods provide offset pivot adjustability. When an adjustable offset pad insert is installed one way, one pivot offset is set. The pivot offset may be adjusted and set another way by removing the adjustable offset pad insert, rotating it 180 degrees and installing the adjustable offset pad insert back in the journal pad.

Adjustable offset pivot journal pad

A damper film bearing assembly for supporting a rotatable shaft includes a bearing housing having a longitudinal opening passing therethrough for receiving the rotatable shaft. The bearing housing also has at least one radial recess formed in an outer surface thereof. At least one resilient element is disposed within the recess in the bearing housing above the floor of the recess, the resilient element biasing the support piston away from the axis of the rotatable shaft. The resilient element in accordance with the disclosure may be a bridge spring or a rod spring as appropriate.

Bridge spring centering device for squeeze film dampers

A damper film bearing assembly for supporting a rotatable shaft includes a bearing housing having a longitudinal opening passing therethrough for receiving the rotatable shaft. The bearing housing also has at least one radial recess formed in an outer surface thereof, the recess having a floor. The assembly further includes at least one support piston slideably disposed within the recess in the bearing housing, the support piston slideable within the recess radially toward and away from a central longitudinal axis of the rotatable shaft. At least one resilient element is disposed within the recess in the bearing housing between the floor of the recess and the support piston, the resilient element biasing the support piston away from the axis of the rotatable shaft.

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Little Genesee, NY, United States of America

Donald H Rockefeller