Hydraulic seal for non-mainshaft, rotating to static
AssigneeUnited Technologies Corporation
InventorsGrace E. Szymanski, Justin Luong
Life of this patent
Estimating the term…
Abstract
A seal for reducing leakage about a rotating shaft having an axis includes a rotating component configured to be positioned radially outward from and surround the rotating shaft, and including a rotating cylinder defining an annular oil chamber for receiving oil. The seal also includes a static component including a sealing plate configured to extend into the annular oil chamber such that the oil fills a gap between the sealing plate and the rotating cylinder to reduce air leakage between the rotating component and the static component in response to rotation of the rotating component.
Claims19
A seal for reducing leakage about a rotating shaft having an axis, the seal comprising:
- a rotating component configured to be positioned radially outward from and surround the rotating shaft, and including a rotating cylinder defining an annular oil chamber for receiving oil;
- a static component having:
- a stepped cylinder having multiple steps of increasing diameter from an inner step to an outer step, the outer step having a greater diameter than the inner step,
- a sealing plate extending radially inward from the inner step and configured to extend into the annular oil chamber such that the oil fills a gap between the sealing plate and the rotating cylinder to reduce air leakage between the rotating component and the static component in response to rotation of the rotating component, and
- an attachment platform extending away from the outer step and configured to couple the static component to an external component;
- and
- a pinion gear configured to be positioned radially between the static component and the rotating shaft.
A system for reducing leakage about a rotating shaft having an axis, the system comprising:
- the rotating shaft;
- a rotating component configured to be positioned radially outward from and surround the rotating shaft, and including a rotating cylinder defining an annular oil chamber configured to receive oil;
- a static component having:
- a stepped cylinder having multiple steps of increasing diameter from an inner step to an outer step, the outer step having a greater diameter than the inner step,
- a sealing plate extending radially inward from the inner step and configured to extend into the annular oil chamber such that the oil fills a gap between the sealing plate and the rotating cylinder to reduce air leakage between the rotating component and the static component in response to rotation of the rotating component, and
- an attachment platform extending away from the outer step and configured to couple the static component to an external component;
- and
- a pinion gear configured to be positioned radially between the static component and the rotating shaft.
A seal for reducing leakage about a rotating shaft having an axis, the seal comprising:
- a rotating component configured to be positioned radially outward from and surround the rotating shaft, and including:
- a rotating cylinder defining an annular oil chamber for receiving oil, and
- a collar connected to the rotating cylinder and defining a plurality of oil feed holes configured to receive oil and to facilitate transfer of the oil to the annular oil chamber;
- a static component including:
- a stepped cylinder having multiple steps of increasing diameter from an inner step to an outer step, the outer step having a greater diameter than the inner step, the stepped cylinder configured to be positioned adjacent to and downstream from the rotating component,
- a sealing plate configured to extend into the annular oil chamber from the inner step such that the oil fills a gap between the sealing plate and the rotating cylinder to reduce air leakage between the rotating component and the static component in response to rotation of the rotating component, and
- an attachment platform extending away from the outer step and configured to couple the static component to an external component;
- and
- a pinion gear configured to be positioned radially between the static component and the rotating shaft.
Dependencies are inferred from the claim text.