Patent US5228784A successfully refreshed from Google Patents.
US5228784A
Expired / Lapsed
US
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Squeeze film damper composite ring seal
Assignee: General Electric Co
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Filing: 1991-05-16
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Granted: 1993-07-20
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Expires: 2011-05-16
Abstract
Abstract A piston type ring which includes a continuous synthetic material O-ring concentrically mounted thereon in a groove in the outer circumference of the ring is utilized as a piston ring seal in a squeeze film damper.
Inventors
- 👤 Melvin Bobo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:40
CPC Classifications
F; F16; F16C; F16C27/00; F16C27/04; F16C27/045; F16C19/00; F16C19/22; F16C19/24; F16C19/26; F16C2360/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
In a squeeze film damper assembly comprising a housing having an annular chamber therein and an annular bearing support member in said chamber and adapted for radial motion therein, said bearing support having a pair of spaced apart parallel ring grooves therein, an improved sealing ring in said grooves and projecting therefrom to sealingly engage said housing, said sealing ring comprising in combination (a) a hard metal strip formed into a circular configuration with the ends thereof in closely spaced abutting relationship, (b) said metal strip in circular configuration having a concentric groove therein in the circumferential outer surface thereof, and (c) a non-metal continuous circular ring insert fitting concentrically in said groove and projecting therefrom to sealingly engage an opposite circumferential surface.
Claim 2
Dependent Claim
123 words
In a squeeze film damper assembly comprising a housing having an annular chamber therein and an annular bearing support member in said chamber and adapted for radial motion therein, said bearing support having a pair of spaced apart parallel ring grooves therein, an improved sealing ring in said grooves and projecting therefrom to sealingly engage said housing, said sealing ring comprising in combination (a) a hard metal strip formed into a circular configuration with the ends thereof in closely spaced abutting relationship, (b) said metal strip in circular configuration having a concentric groove therein in the circumferential outer surface thereof, and (c) a non-metal continuous circular ring insert fitting concentrically in said groove and projecting therefrom to sealingly engage an opposite circumferential surface.
Claim 3
Dependent Claim
16 words
The invention as recited in claim 1 wherein said non-metal insert comprises a synthetic rubbery material.
Claim 4
Dependent Claim
15 words
The invention as recited in claim 1 wherein said non-metal insert comprises an elastomer material.
Claim 5
Dependent Claim
20 words
The invention as recited in claim 1 wherein said bearing support is the outer race of a rolling element bearing.
Claim 6
Dependent Claim
18 words
The invention as recited in claim 1 wherein said hard metal strip is of a rectangular cross section.
Claim 7
Dependent Claim
19 words
The invention as recited in claim 1 wherein said groove in said circular ring is of rectangular cross section.
Claim 8
Dependent Claim
15 words
The invention as recited in claim 1 wherein said insert is of circular cross section.
Claim 9
Dependent Claim
14 words
The invention as recited in claim 1 wherein said insert comprises an elastomeric material.
References Cited (Backward Citations)
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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) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |