US5568931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush seal
Assignee: General Electric Co
•
Filing: 1992-08-20
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Granted: 1996-10-29
•
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 04:47
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.
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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 |