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US 10,138,750 B2Granted
Boas segmented heat shield
AssigneeUnited Technologies Corporation
InventorsMichael G. McCaffrey, Benjamin F. Hagan, David Richard Griffin
Life of this patent
Estimating the term…
Abstract
A seal assembly includes a seal arc segment defining first and second seal supports with a carriage defining first and second support members. The first support member supports the seal arc segment in a first ramped interface, and the second support member supports the seal arc segment in a second ramped interface. A spring is configured to bias the seal arc segment axially. A heat shield is radially inward of the spring.
Claims20
A seal assembly, comprising:
- a seal arc segment defining first and second seal supports;
- a carriage defining first and second support members, the first support member supporting the seal arc segment in a first ramped interface and the second support member supporting the seal arc segment in a second ramped interface;
- a spring configured to bias the seal arc segment axially;
- and
- a heat shield radially inward of the spring and having a radially-extending leg disposed axially between the spring and the seal arc segment.
2 more elements
A gas turbine engine, comprising:
- a rotor rotatable about an axis;
- a seal arc segment radially outward of the rotor defining first and second seal supports;
- a carriage defining first and second support members, the first support member supporting the seal arc segment in a first ramped interface and the second support member supporting the seal arc segment in a second ramped interface;
- a spring configured to bias the seal arc segment axially;
- and
- a heat shield radially inward of the spring and having a radially-extending leg disposed axially between the spring and the seal arc segment.
3 more elements
A method of assembling a seal assembly, comprising:
- providing a seal arc segment, the seal arc segment defining first and second seal supports;
- supporting the seal arc segment on a carriage defining first and second support members, the first support member supporting the seal arc segment in a first ramped interface and the second support member supporting the seal arc segment in a second ramped interface;
- biasing the seal arc segment axially with a spring;
- and
- providing a heat shield radially inward of the spring and having a radially-extending leg disposed axially between the spring and the seal arc segment.
2 more elements
Dependencies are inferred from the claim text.