Patent application number | Description | Published |
20080240632 | SUPPORT DAMPERS FOR BEARING ASSEMBLIES AND METHODS OF MANUFACTURE - A support damper is provided for a bearing assembly to improve the damping capabilities of an uncentered squeeze film damper and to provide a support structure stiffness to minimize rotor to structure unbalance response. In one embodiment, and by way of example only, the support damper includes an inner ring, an outer ring, and a U-shaped beams. The inner ring is configured to be disposed around the bearing assembly and to extend axially along a portion thereof. The outer ring is spaced apart from the inner ring and extends radially outwardly relative thereto. The U-shaped beams couples the inner ring to the outer ring. Methods of manufacturing the support damper are also provided. | 10-02-2008 |
20080267767 | SEALS, SEALED SYSTEMS, AND METHODS FOR SEALING A SHAFT - In one embodiment, and by way of example only, a seal is provided for sealing a hollow shaft, where the hollow shaft has an inner surface that may be uneven due to shot peening. The seal includes an axially extending ring section having a first end, a second end, an inner surface, and a disk section disposed substantially perpendicular to the ring section inner surface between the ring section first and second ends. The seal conforms to the shaft inner surface to stop oil leakage. | 10-30-2008 |
20090060717 | SYNCHRONOUS SIGNAL GENERATOR FOR TRIM BALANCING OF JET ENGINE - A synchronous signal generator is provided for use in conjunction with an aircraft engine having a spool and an engine output shaft driven by the spool. The synchronous signal generator includes a generator housing, a generator output member rotatably mounted in the generator housing, a once-per-revolution timing mark on the generator output member, and conversion gearing disposed within the housing and configured to couple the engine output shaft to the generator output member. The conversion gearing rotates the generator output member at substantially the same rotational frequency as the spool when the conversion gearing is coupled to the engine output shaft. | 03-05-2009 |
20090110543 | SEQUENTIAL STIFFNESS SUPPORT FOR BEARING ASSEMBLIES AND METHOD OF FABRICATION - A sequential stiffness support is provided for a bearing assembly to improve vibration characteristics of a gas turbine engine and to provide a variable structural stiffness to the support to minimize unbalance load transmissibility. In one embodiment, and by way of example only, the sequential stiffness support includes an inner ring, an outer ring, and means for coupling the inner ring and the outer ring. The sequential stiffness support is configured to provide a first stiffness support at a first engine speed and a second stiffness support at speeds greater than the first engine speed. Methods of manufacturing the sequential stiffness support are also provided. | 04-30-2009 |
20090110572 | ANISOTROPIC BEARING SUPPORTS FOR TURBOCHARGERS - An exemplary anisotropic member ( | 04-30-2009 |
20090269185 | DAMPING SYSTEMS FOR USE IN ENGINES - Damping systems and engines including the damping systems are provided. In one embodiment, and by way of example only, the damping system includes a rotor, a bearing assembly mounted to the rotor, a spring cage disposed around the bearing assembly, an axially-extending housing surrounding the spring cage, a first squeeze film damper formed between the bearing assembly and the spring cage, and a second squeeze film damper formed between the spring cage and the axially-extending housing. | 10-29-2009 |
20120121446 | ANISOTROPIC BEARING SUPPORTS FOR TURBOCHARGERS - An exemplary anisotropic member supports a semi-floating bearing in a bore and can reduce non-synchronous vibration of the bearing in the bore. An anisotropic member can include an annular body configured to receive a semi-floating bearing and to space the bearing a distance from a bore surface and can be configured to impart anisotropic stiffness and damping terms to the semi-floating bearing when positioned in the bore. Such a member is suitable for use in a rotating assembly for a turbocharger where the bearing may be a semi-floating bearing. Various exemplary members, bearings, housings, assemblies, etc., are disclosed. | 05-17-2012 |
20130294917 | APPARATUSES INCLUDING A ROTOR GROUP AND METHODS OF DAMPING THE APPARATUSES - An apparatus includes a rotor group rotatable within the apparatus and a bearing assembly supporting the rotor group. A support structure supports the bearing assembly and is fixed in the apparatus. The support structure includes a support housing, an anisotropic support that engages the bearing assembly and the support housing, and a squeeze film cavity that is defined between the anisotropic support and the support housing. A damper fluid supply line is in fluid communication with the squeeze film cavity. A fluid interruption device is disposed in the damper fluid supply line. A method of damping the apparatus includes supplying fluid under pressure to the squeeze film cavity through the damper fluid supply line. Upon surpassing a predetermined value of a variable correlated to rotational speed of the rotor group, the fluid flow to the squeeze film cavity is interrupted with the fluid interruption device. | 11-07-2013 |
20140255157 | ANISOTROPIC BEARING SUPPORTS FOR TURBOCHARGERS - A rotating assembly for a turbocharger can include a center housing that includes a through bore having a central axis; a bearing cartridge positioned in the through bore where the bearing cartridge includes an outer race, an inner race and rolling elements disposed between the inner race and the outer race; an anisotropic member positioned in the through bore between the outer race of the bearing cartridge and a surface of the center housing where the surface defines at least part of the through bore of the center housing; and a shaft rotatably supported in the center housing by the bearing cartridge where the inner race is mounted on the shaft and the shaft is connected at one end to a compressor wheel and at another end to a turbine wheel. | 09-11-2014 |