US4662658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal
Assignee: General Electric Co
•
Filing: 1984-06-04
•
Granted: 1987-05-05
•
Expires: 2004-06-04
Abstract
Abstract Seal means for reducing the gas flow through the space between the opposing ends of first and second concentric axially disposed cylinders is disclosed. The seal means includes a presizeable annular leaf seal concentrically mateable with the first cylinder. In addition, the seal means includes securing means for securing the left seal to the second cylinder. In a specific embodiment, the seal means provides an effective seal between a turbine rear frame and mixer liner.
Inventors
- 👤 Joseph Holowach
- 👤 James A. Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:31
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/38; F02K1/386; F02K1/78; F02K1/80; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S285/00; Y10S285/917
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
Seal means for reducing the gas flow through the space between the opposing ends of first and second concentric axially disposed cylinders comprising: a presizeable annular leaf seal concentrically mateable with and sealingly engagable with substantially all of said end of said first cylinder; and securing means for securing said leaf seal to said end of said second cylinder; wherein said securing means includes: a ring rigidly secured to said second cylinder and having an outwardly directed flange; and a retaining ring connected to said leaf seal and comprising a radially directed recess adapted to engage said flange; wherein said flange is slideably moveable within said recess so as to allow differential radial movement between said first and second cylinders.
Claim 2
Dependent Claim
120 words
Seal means for reducing the gas flow through the space between the opposing ends of first and second concentric axially disposed cylinders comprising: a presizeable annular leaf seal concentrically mateable with and sealingly engagable with substantially all of said end of said first cylinder; and securing means for securing said leaf seal to said end of said second cylinder; wherein said securing means includes: a ring rigidly secured to said second cylinder and having an outwardly directed flange; and a retaining ring connected to said leaf seal and comprising a radially directed recess adapted to engage said flange; wherein said flange is slideably moveable within said recess so as to allow differential radial movement between said first and second cylinders.
Claim 3
Dependent Claim
22 words
Seal means, as recited in claim 1, wherein said leaf seal is generally axially directed with a generally radially outwardly directed lip.
Claim 4
Dependent Claim
40 words
Seal means, as recited in claim 1, wherein said leaf seal has an axial split thereby forming opposing seal ends and including: joining means for joining said seal ends; and sizing means for varying the radial size of said seal.
Claim 5
Dependent Claim
22 words
Seal means, as recited in claim 3, wherein said sizing means includes at least one shim positioned between said opposing seal ends.
References Cited (Backward Citations)
US3127182A
Cited
US1625545A
Cited
US2231512A
Cited
US2637972A
Cited
FR1562486A
Cited
US4071268A
Cited
US4071269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |