Bearings – Rotary bearing – Hydraulic or pneumatic bearing support
Patent
1999-01-19
2000-08-08
Hannon, Thomas R.
Bearings
Rotary bearing
Hydraulic or pneumatic bearing support
384535, 384581, 415142, F16C 2700
Patent
active
060991658
ABSTRACT:
An annular support for supporting radial bearings and accommodating radial expansion and lateral displacement, and damping vibration of the bearing with respect to a static support structure includes an annular casing to support a bearing therein and a cantilevered support which has a first and second rings, axially spaced apart and connected by a plurality of flexible beams. The first ring is connected to the annular casing which is spaced radially, inwardly from the cantilevered support and the second ring is connected to the static support structure so that the flexibility of the beams permits the annular casing to move laterally in small distance while the annular support is supported to the static support structure. The flexibility is adjusted by selection of a combination of number, width and thickness of the beams. A service line is able to have an access between two adjacent beams to the annular casing to provide lubricating fluids. The invention can be broadly applied to rotational mechanisms, in particular, to high rotational speed machine, such as aircraft turbine engines.
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Astle Jeffrey W.
Hannon Thomas R.
Pratt & Whitney Canada Corp.
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