Zoned contact bushing
AssigneeBell Textron Inc.
InventorsAndrew Ryan Maresh, Robert P. Wardlaw, Glenn Shimek
Life of this patent
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Abstract
There is disclosed in one example a mechanical assembly, including: a parent part including a parent part lug; a bushing to pass through the lug, the bushing comprising a central inner diameter, and respective left and right relief zones having a second inner diameter different from the central inner diameter; and a through-pin to pass through the bushing.
Claims22
A mechanical assembly, comprising:
- a parent part comprising a parent part lug;
- a bushing to pass through the lug, the bushing comprising a central inner diameter, and respective left and right relief zones having a second inner diameter different from the central inner diameter;
- and
- a through-pin to pass through the bushing.
A zoned contact bushing, comprising a substantially uniform outer diameter, a first inner diameter, and a second inner diameter, wherein the first inner diameter is less than the second inner diameter.
A rotary aircraft, comprising:
- an airframe;
- an engine;
- a drive system;
- and
- a rotor assembly comprising a blade assembly joined to a rotor mount with a pin assembly, comprising a first lug integrated with the rotor mount, second and third lugs integrated with the blade assembly and disposed astride the first lug, first, second, and third bushings passed through the first, second, and third lugs respectively, and a secured pin passed through the first, second, and third bushings;
- wherein the first bushing has a central inner diameter occupying at least half of the first bushing as measured along a long axis, and symmetrical edge relief zones disposed on opposite sides of the central inner diameter.
Dependencies are inferred from the claim text.