Sealing arrangement with vent for an engine component with a service port
AssigneePratt & Whitney Canada Corp.
InventorsSimon BAKER-OSTIGUY, Pierre GAUVIN, Herve TURCOTTE
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Abstract
An apparatus of an aircraft engine having lubricated moving components is provided. The apparatus comprises a housing having a lubricant cavity for receiving lubricant and a service port cavity, the housing defining a selectively openable service port for accessing the service port cavity. A shaft is mounted for rotation about a rotational axis to the housing. A seal is mounted about the shaft forming a partition between the lubricant cavity and the service port cavity. A vent channel extends between the lubricant cavity and the service port cavity.
Claims20
An apparatus of an aircraft engine having lubricated moving components, the apparatus comprising:
- a housing having a lubricant cavity for receiving lubricant and a service port cavity, the housing defining a selectively openable service port for accessing the service port cavity;
- a shaft mounted for rotation about a rotational axis to the housing;
- a seal mounted about the shaft forming a partition between the lubricant cavity and the service port cavity;
- and
- a vent channel extending between the lubricant cavity and the service port cavity.
An apparatus for an aircraft engine, comprising:
- a housing;
- a shaft rotatably supported for rotation about a rotation axis within the housing;
- a seal mounted about the shaft and interfaced to the shaft, the seal having a first side and a second side;
- a lubricant drain cavity on the first side of the seal, the lubricant drain cavity adapted to receive lubricant from a lubricated moving interface of the apparatus;
- an access port cavity on the second side of the seal;
- a vent channel extending between the lubricant drain cavity and the access port cavity for fluid flow communication between the lubricant drain cavity and the access port cavity so as to balance air pressure across the seal;
- and
- a cranking feature in the shaft, the cranking feature accessible via the access port cavity.
Dependencies are inferred from the claim text.