Bearing support
AssigneePratt & Whitney Canada Corp.
InventorLouis Brillon
Life of this patent
Estimating the term…
Abstract
A bearing support provides a circumferentially-extending structure to substantially transmit a radial bearing load to a housing when a radial deflection/deformation of the circumferentially-extending structure caused by the radial bearing load, is within a predetermined limit. The bearing support provides a direct support link bypassing the circumferentially-extending structure to transmit an over-limit portion of the radial bearing load to the housing when the radial deflection/deformation of the circumferentially-extending structure reaches the predetermined limit.
Claims13
A bearing support for radially supporting a rotatable shaft bearing within a housing, the bearing support comprising:
- a first portion and a second portion, the first portion being more flexible than and supported by the second portion, the first portion including a circumferentially-extending structure provided radially between and spaced apart from the bearing and the housing to provide said more flexibility, the circumferentially-extending structure including a plurality of circumferential sections each having circumferentially opposed ends, adjacent said sections being connected end-to-end to form a complete loop around the bearing;
- wherein the first and second portions transmit a radial bearing load to the housing substantially through the circumferentially-extending structure, causing a radial deflection/deformation of the first portion within a predetermined limit;
- wherein the second portion provides a direct link bypassing the circumferentially-extending structure to transmit an over-limit portion of the radial bearing load to the housing when the radial deflection/deformation of the first portion reaches said predetermined limit, the second portion including a plurality of inner and outer radial support members alternately positioned and circumferentially spaced apart from one another, the inner radial support members supporting the circumferentially-extending structure of the first portion on the bearing and the outer radial support members supporting the circumferentially-extending structure within the housing;
- and
- wherein each of the circumferential sections of the circumferentially-extending structure of the first portion comprises a band configured in a wave shape, the wave shaped band extending between the circumferentially opposed ends of each section.
A bearing support for radially supporting a rotatable shaft bearing within a housing, the bearing support comprising:
- an inner ring for accommodating the bearing and an outer ring for being received within the housing, the inner and outer rings defining an annulus therebetween;
- a circumferentially-extending structure disposed within the annulus and radially spaced apart from the respective inner and outer rings, the circumferentially-extending structure including a plurality of circumferential sections each having circumferentially opposed ends, adjacent said sections being connected end-to-end to form a complete loop along the annulus, each of the circumferential sections including a band configured in a wave shape, the wave shaped band extending between the circumferentially opposed ends of each section;
- a plurality of radial support members for supporting the circumferentially-extending structure in place;
- wherein the bearing support transmits a radial bearing load to the housing substantially through the circumferentially-extending structure, causing a radial deflection/deformation of the circumferentially-extending structure within a predetermined limit;
- and wherein the radial support members provide a direct link radially crossing the annulus and bypassing the circumferentially-extending structure to transmit an over-limit portion of the radial bearing load to the housing when the radial deflection/deformation of the circumferentially-extending structure reaches said predetermined limit, each of the radial support members joining one of the end-to-end connections of the respective adjacent sections of the circumferentially-extending structure.
Dependencies are inferred from the claim text.