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US5056935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil film damper seal ring
Assignee: General Electric Co
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Filing: 1990-11-05
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Granted: 1991-10-15
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Expires: 2010-11-05
Abstract
Abstract A squeeze film damper employs spaced apart diagonal cross-section piston ring seals in diagonal cross-section grooves in cross-section to cross-section matching and registry relationship with diagonal surfaces directly exposed to the squeeze film space between the rings.
Inventors
- 👤 Anant P. Singh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:23
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/02; F16F15/023; F16F15/0237; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D25/164; F16C; F16C27/00; F16C27/04; F16C27/045; F16C19/00; F16C19/22; F16C19/24; F16C19/26; F16C2360/00; F16C2360/23
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
In a squeeze film damper comprising a housing with a rolling element bearing assembly therein with an annular bearing race member thereof slidingly fitted in an annular chamber of said housing for transverse radial and orbital motion therein, and where the bearing race member and housing each include a circumferential wall in close spaced nesting relationship to define a squeeze film space therebetween, the improvement comprising, the said bearing support circumferential wall having a pair of spaced apart concentric diagonal-containing cross-section grooves therein with said squeeze film space therebetween.
Claim 2
Dependent Claim
89 words
In a squeeze film damper comprising a housing with a rolling element bearing assembly therein with an annular bearing race member thereof slidingly fitted in an annular chamber of said housing for transverse radial and orbital motion therein, and where the bearing race member and housing each include a circumferential wall in close spaced nesting relationship to define a squeeze film space therebetween, the improvement comprising, the said bearing support circumferential wall having a pair of spaced apart concentric diagonal-containing cross-section grooves therein with said squeeze film space therebetween.
Claim 3
Dependent Claim
17 words
The invention as recited in claim 1 wherein the diagonal of said grooves face towards each other.
Claim 4
Dependent Claim
28 words
The invention as recited in claim 1 wherein a diagonal-containing cross-section piston ring seal is positioned in each said grooves in ring cross-section and groove cross-section registry relationship.
Claim 5
Dependent Claim
23 words
The invention as recited in claim 3 wherein the diagonal of each said ring is exposed directly to the squeeze film space therebetween.
Claim 6
Dependent Claim
41 words
The invention as recited in claim 3 wherein the diagonal of said rings and the diagonal of said grooves are in spaced apart parallel relationship to define an oil filled slant space in fluid flow communication with said squeeze film space.
Claim 7
Dependent Claim
26 words
The invention as recited in claim 5 wherein the distance between said spaced apart diagonals is no more than the thickness of said squeeze film space.
Claim 8
Dependent Claim
17 words
The invention as recited in claim 5 wherein said diagonals are the diagonals of a right triangle.
Claim 9
Dependent Claim
16 words
The invention as recited in claim 5 wherein said diagonals are the diagonals of a trapezoid.
Claim 10
Dependent Claim
29 words
The invention as recited in claim 5 wherein said rings slidingly project from said grooves to provide a circumferential planar surface in engagement with an opposite circumferential planar surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |