Inner member for main rotor centrifugal force bearing
AssigneeTextron Innovations Inc.
InventorsAmarjit KIZHAKKEPAT, Mark Adam WIINIKKA
Life of this patent
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Abstract
A back-to-back spherical bearing assembly for a rotary system of a rotary aircraft includes a spherical bearing member having an interior cavity and a spherical bearing surface defining a bearing focal point, a first elastomeric and a second elastomeric bonded to the spherical bearing surface on opposite sides of the bearing focal point, an inboard attachment bonded to the first elastomeric and configured to be secured to a rotor hub of the rotary system, and an outboard attachment bonded to the second elastomeric and configured to be secured to a rotor blade of the rotary system.
Claims20
A back-to-back spherical bearing, comprising:
- a spherical bearing member having an interior cavity and a spherical bearing surface defining a bearing focal point;
- and
- a first elastomeric and a second elastomeric bonded to the spherical bearing surface on opposite sides of the bearing focal point;
- wherein a distance from the bearing focal point to any point on the spherical bearing surface is identical;
- wherein the spherical bearing member has a first opening and a second opening formed opposite each other in the spherical bearing surface into the interior cavity;
- wherein the first opening, the interior cavity, and the second opening form a throughbore.
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A back-to-back spherical bearing assembly for a rotary system of a rotary aircraft, the back-to-back spherical bearing assembly comprising:
- a spherical bearing member having an interior cavity and a spherical bearing surface defining a bearing focal point;
- a first elastomeric and a second elastomeric bonded to the spherical bearing surface on opposite sides of the bearing focal point;
- an inboard attachment bonded to the first elastomeric and configured to be secured to a rotor hub of the rotary system;
- and
- an outboard attachment bonded to the second elastomeric and configured to be secured to a rotor blade of the rotary system;
- wherein a distance from the bearing focal point to any point on the spherical bearing surface is identical;
- wherein the spherical bearing member comprises an opening formed in the spherical bearing surface into the interior cavity, the opening being closed with a plug having an outer surface that is contoured to match the spherical bearing surface.
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Dependencies are inferred from the claim text.