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1. WO2000043686 - FOIL THRUST BEARING WITH VARYING CIRCUMFERENTIAL AND RADIAL STIFFNESS

Publication Number WO/2000/043686
Publication Date 27.07.2000
International Application No. PCT/US2000/001137
International Filing Date 17.01.2000
Chapter 2 Demand Filed 21.08.2000
IPC
F16C 17/12 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
17Sliding-contact bearings for exclusively rotary movement
12characterised by features not related to the direction of the load
CPC
F16C 17/042
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
17Sliding-contact bearings for exclusively rotary movement
04for axial load only
042with flexible leaves to create hydrodynamic wedge, e.g. axial foil bearings
F16C 2360/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
2360Engines or pumps
F16C 27/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
27Elastic or yielding bearings or bearing supports, for exclusively rotary movement
02Sliding-contact bearings
Applicants
  • ALLIEDSIGNAL INC. [US/US]; 101 Columbia Road P.O. Box 2245 Morristown, NJ 07962-2245, US
Inventors
  • SAVILLE, Marshall, Patton; US
  • GUNDERSEN, Erik, Scott; US
Agents
  • CRISS, Roger, H. ; AlliedSignal Inc. (Law Dept., Attn: A. Olinger) 101 Columbia Road P.O. Box 2245 Morristown, NJ 07962-2245, US
Priority Data
09/235,84922.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FOIL THRUST BEARING WITH VARYING CIRCUMFERENTIAL AND RADIAL STIFFNESS
(FR) PALIER DE POUSSEE A COUSSINETS PLATS, A RIGIDITE RADIALE ET CIRCONFERENTIELLE VARIABLE
Abstract
(EN)
An improved foil thrust bearing having a thrust runner and a thrust plate includes an underspring element positioned adjacent to the thrust plate. The underspring element comprises, in one embodiment, a plurality of alternating first apertures and spring portions, with at least one spring portion having a periodic configuration and comprising a leading edge and a trailing edge. The periodic configuration is defined by a plurality of pitches that vary between the leading and trailing edges. Also defining the periodic configuration is a plurality of periodic elements that vary in longitudinal length between the leading and trailing edges. A thrust bearing disk is disposed intermediate the underspring element and the thrust runner. The disk comprises a plurality of transition areas that provide a stepped configuration to the disk. The transition areas match a plurality of circumferential positions of the first apertures in the underspring.
(FR)
L'invention concerne un palier de poussée amélioré à coussinets plats comportant un galet de poussée et un plateau de poussée qui comprend un élément à ressort adjacent au plateau de poussée. Dans un mode de réalisation, l'élément à ressort comprend plusieurs ouvertures et parties ressorts qui s'alternent, avec au moins une partie ressort possédant une configuration périodique ainsi qu'un bord avant et un bord arrière. La configuration périodique est définie par plusieurs pas qui varient entre les bords avant et arrière. Cette configuration périodique est également définie par des éléments périodiques dont la longueur longitudinale varie entre les bords avant et arrière. Un disque du palier de poussée est placé entre l'élément ressort et le galet de poussée. Ce disque comprend plusieurs zones de transition qui lui confèrent une configuration à gradins. Les zones de transitions correspondent à plusieurs positions des premières ouvertures sur la circonférence de l'élément ressort.
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