Invention Grant
- Patent Title: Eddy current damper for lift off seal
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Application No.: US15657882Application Date: 2017-07-24
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Publication No.: US10465544B2Publication Date: 2019-11-05
- Inventor: Richard A. Lomenzo , Daniel L. Gysling , Joseph V. Paturzo
- Applicant: UNITED TECHNOLOGIES CORPORATION
- Applicant Address: US CT Farmington
- Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee Address: US CT Farmington
- Agency: Snell & Wilmer, L.L.P.
- Main IPC: F01D11/00
- IPC: F01D11/00 ; F16J15/34 ; F01D25/16

Abstract:
A gas turbine engine may include a liftoff carbon seal assembly. Liftoff carbon seal assembly may include a static seal support structure, a magnetic carrier spring assembly coupled to the static seal support structure, a nonferrous metal slab magnetically associated with the magnetic carrier spring assembly and coupled to the static seal support structure. In various embodiments, a combination of the magnetic carrier spring assembly and the nonferrous metal slab create a counter-force using an eddy current to oppose a motion of the magnetic carrier spring assembly.
Public/Granted literature
- US20190024523A1 EDDY CURRENT DAMPER FOR LIFT OFF SEAL Public/Granted day:2019-01-24
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