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US 2019/0157938 A1Published application
Rotational mechanical systems having reduced friction sealing surfaces
AssigneeHamilton Sundstrand Corporation
InventorCraig R. Legros
Life of this patent
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Abstract
In accordance with at least one aspect of this disclosure, a stationary housing for a rotational mechanical device includes an interior sealing surface configured to receive a rotationally stationary seal assembly that is allowed to move axially to track a journal shaft, wherein the interior sealing surface includes an anti-frictional coating.
Claims16
An aircraft starter generator, comprising:
- a housing defining an interior sealing surface;
- a rotationally stationary seal assembly disposed on the housing that is axially biased by a spring member to press against a journal shaft to track axial and radial movement of the journal shaft;
- and
- an anti-frictional coating applied to the interior sealing surface configured to reduce axial friction of the rotationally stationary seal assembly relative to the journal shaft.
1 more element
A method, comprising:
- applying an anti-frictional coating to an interior sealing surface of a housing of an aircraft starter generator.
A stationary housing for a rotational mechanical device, comprising:
- an interior sealing surface configured to receive a rotationally stationary seal assembly that is allowed to move axially to track a journal shaft, wherein the interior sealing surface includes an anti-frictional coating.
Dependencies are inferred from the claim text.