US4645217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finger seal assembly
Assignee: RTX Corp
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Filing: 1985-11-29
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Granted: 1987-02-24
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Expires: 2005-11-29
Abstract
Abstract A finger seal assembly for use between a stationary member and a movable member is formed of two overlapping metallic members having a solid portion at one end and having fingers at the other end, a layer of high temperature resistant cloth being positioned between said overlapping metallic members; said fingers of one metallic member being bent over the fingers of the other metallic member to hold said fingers together, and said solid portions of said metallic members being welded together, trapping said high temperature resistant cloth between said metallic members. High pressure acts on the inner metallic member to compress the high temperature resistant cloth.
Inventors
- 👤 Fred L. Honeycutt, Jr.
- 👤 Robert G. Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; F01; F01D; F01D11/00; F01D11/005; F02; F02K; F02K1/00; F02K1/78; F02K1/80; F02K1/805; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/943
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
A seal means for use between a stationary member and a movable member, said seal means comprising two overlapping inner and outer metallic members each having a solid portion at one end and having slots forming fingers at the other end, said solid portions being contoured to fit a stationary member, said fingers of said outer metallic member being shaped to fit a movable member, said metallic members being offset so that the slots of each member are not aligned, a layer of high temperature resistant cloth positioned between said overlapping metallic members sealing flow through said slots and between said two metallic members.
Claim 2
Dependent Claim
104 words
A seal means for use between a stationary member and a movable member, said seal means comprising two overlapping inner and outer metallic members each having a solid portion at one end and having slots forming fingers at the other end, said solid portions being contoured to fit a stationary member, said fingers of said outer metallic member being shaped to fit a movable member, said metallic members being offset so that the slots of each member are not aligned, a layer of high temperature resistant cloth positioned between said overlapping metallic members sealing flow through said slots and between said two metallic members.
Claim 3
Dependent Claim
56 words
A seal means as set forth in claim 1 wherein said high temperature resistant cloth extends for approximately the length and width of one of the metallic members, said outer metallic member having the ends of the fingers bent inwardly and back over the fingers of said inner metallic member enclosing said high temperature resistant cloth.
Claim 4
Dependent Claim
72 words
A seal means as set forth in claim 2 wherein said metallic members are of the same width and have the same number of fingers, said offset positioning of said metallic members leaving an extending portion of the inner metallic member at one end and an extending portion of the outer metallic member at the other end, said high temperature resistant cloth covering the extending portion of one of the metallic members.
Claim 5
Dependent Claim
96 words
A seal means as set forth in claim 2 wherein the solid portions of said inner and outer metallic members having the layer of high temperature resistant cloth between them are fixed together, said high temperature resistant cloth having openings therethrough at a plurality of locations between the solid portions of the inner and outer metallic members, said solid portion of inner and outer metallic members projecting towards each other through said openings and having surface engagement, each engaging location being spot welded to hold the solid portions of said inner and outer metallic members together.
Claim 6
Dependent Claim
21 words
A seal means as set forth in claim 1 wherein said high temperature resistant cloth is a high temperature ceramic cloth.
Claim 7
Dependent Claim
17 words
A seal means as set forth in claim 5 wherein said high temperature ceramic cloth is Nextel.
References Cited (Backward Citations)
US3843278A
Cited
US25724A
Cited
US2124108A
Cited
US2571817A
Cited
US2699349A
Cited
US3199878A
Cited
US3381969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |