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US 2015/0307187 A1Published application
Elastomeric bearing having tapered layers
AssigneeBell Helicopter Textron Inc.
InventorMichael C. Burnett
Life of this patent
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Abstract
A rotor hub for an aircraft that includes a yoke, a rotor mast; and a hub spring assembly. The hub spring assembly includes an upper outer member; an upper inner member; and an upper spring member having a plurality of elastomeric layers and shim layers sandwiched between the upper outer member and the upper inner member, the shim layers being tapered such that a thickness of each shim layer is smaller at a side portion as compared to the thickness of the shim at a center portion.
Claims18
A bearing comprising:
- an upper outer member;
- an upper inner member;
- a plurality of elastomeric layers and shim layers sandwiched between the upper outer member and the upper inner member;
- wherein the shim layers are tapered such that a thickness of each shim layer is smaller at a side portion as compared to the thickness at a center portion.
1 more element
A rotor hub for an aircraft, the rotor hub comprising:
- a yoke;
- a rotor mast;
- and
- a hub spring assembly, comprising:
- an upper outer member;
- an upper inner member;
- and
- an upper spring member having a plurality of elastomeric layers and shim layers sandwiched between the upper outer member and the upper inner member, the shim layers being tapered such that a thickness of each shim layer is smaller at a side portion as compared to the thickness at a center portion.
5 more elements
Dependencies are inferred from the claim text.