Patent US2322602A successfully refreshed from Google Patents.
Patent US5568931A successfully refreshed from Google Patents.
US5568931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush seal
Assignee: General Electric Co
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Filing: 1992-08-20
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Granted: 1996-10-29
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Expires: 2012-08-20
Abstract
Abstract There is provided by the present invention a brush seal including apparatus for reducing bristle vibrations, such as a damper, that engages the upstream side of the bristle pack of the brush seal so as to absorb vibrations and therefore reduce chamfering of the bristle pack.
Inventors
- 👤 Wu-Yang Tseng
- 👤 Brent L. Bristol
- 👤 Rolf R. Hetico
- 👤 Christopher C. Glynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:36
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; F16J15/3288
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
Sealing apparatus for sealing a leakage path extending axially from a high pressure, upstream region to a low pressure, downstream region between a rotating member and a stationary member of a fluid flow machine, said apparatus comprising: a brush seal having at least one stage, said stage including a bristle pack sandwiched between upstream and downstream plates, said plates being attached to said stationary member, said bristle pack including a plurality of bristles, said bristles having free ends that sealingly engage said rotating member; and a damping plate disposed between said upstream plate and said bristle pack, said damping plate bearing against said upstream side of said bristle pack and having a substantially planar, annular configuration with a radially inside edge, said damping plate including a plurality of substantially radially directed slots extending from said inside edge outwardly, said slots being provided for absorbing vibrations.
Claim 2
Dependent Claim
145 words
Sealing apparatus for sealing a leakage path extending axially from a high pressure, upstream region to a low pressure, downstream region between a rotating member and a stationary member of a fluid flow machine, said apparatus comprising: a brush seal having at least one stage, said stage including a bristle pack sandwiched between upstream and downstream plates, said plates being attached to said stationary member, said bristle pack including a plurality of bristles, said bristles having free ends that sealingly engage said rotating member; and a damping plate disposed between said upstream plate and said bristle pack, said damping plate bearing against said upstream side of said bristle pack and having a substantially planar, annular configuration with a radially inside edge, said damping plate including a plurality of substantially radially directed slots extending from said inside edge outwardly, said slots being provided for absorbing vibrations.
Claim 3
Dependent Claim
147 words
A brush seal for sealing a leakage path extending axially from a high pressure, upstream region to a low pressure, downstream region between a rotating member and a stationary member of a fluid flow machine, said brush seal having at least one stage, said stage including a bristle pack and an upstream and a downstream plate, said plates being attached to said stationary member and sandwiching said bristle pack, said bristle pack having upstream and downstream sides and having a plurality of bristles, said seal further including a damping plate disposed between said upstream plate and said bristle pack, said damping plate bearing against said upstream side of said bristle pack and having a substantiality planar, annular configuration with a radially inside edge, said damping plate including a plurality of substantially radially directed slots extending from said inside edge outwardly, said slots being provided for absorbing vibrations.
Claim 4
Dependent Claim
147 words
A brush seal for sealing a leakage path extending axially from a high pressure, upstream region to a low pressure, downstream region between a rotating member and a stationary member of a fluid flow machine, said brush seal having at least one stage, said stage including a bristle pack and an upstream and a downstream plate, said plates being attached to said stationary member and sandwiching said bristle pack, said bristle pack having upstream and downstream sides and having a plurality of bristles, said seal further including a damping plate disposed between said upstream plate and said bristle pack, said damping plate bearing against said upstream side of said bristle pack and having a substantiality planar, annular configuration with a radially inside edge, said damping plate including a plurality of substantially radially directed slots extending from said inside edge outwardly, said slots being provided for absorbing vibrations.
References Cited (Backward Citations)
US885032A
Cited
US2878048A
Cited
US4645362A
Cited
USRE30600E
Cited
US3917150A
Cited
USRE30206E
Cited
US4204629A
Cited
US4218189A
Cited
US4265455A
Cited
US4202554A
Cited
US4269420A
Cited
US4411594A
Cited
US4415309A
Cited
US4358120A
Cited
US4600202A
Cited
US4678113A
Cited
US4781388A
Cited
US4595207A
Cited
US4809990A
Cited
US4696480A
Cited
US4755103A
Cited
US4756536A
Cited
US5090710A
Cited
US4971336A
Cited
US5026252A
Cited
US5029875A
Cited
US5031922A
Cited
US5042823A
Cited
GB2250789A
Cited
GB2250790A
Cited
GB9121398D0
Cited
GB2258277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-10-29 | 2000-04-29 | 2000-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-29 | 2004-04-29 | 2004-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-29 | 2008-04-29 | 2008-10-29 | $7700.00 | Window Closed / Lapsed |