US4767222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compliant hydrodynamic gas lubricated bearing
Assignee: Williams International Corp
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Filing: 1987-06-11
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Granted: 1988-08-30
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Expires: 2007-06-11
Abstract
Abstract A self-pressurizing compliant hydrodynamic gas bearing includes a resilient support system having a multi-stage spring arrangement for supporting a flexible foil. The compliant and resilient support system enables the bearing to provide greater load capacity under extreme transient loads while accommodating local thermal distortions, shaft misalignment and runout.
Inventors
- 👤 Guisuppe Paletta, deceased
- 👤 legal representative Angelo D. Paletta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:13
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/02; F16C17/024; F16C27/00; F16C27/02; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1005
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
62 words
A self-pressurizing compliant hydrodynamic gas bearing comprising a shaft journal, a plurality of spring elements secured to the inner periphery of said shaft journal, a plurality of arcuate pads on said spring elements, respectively, and a flexible foil disposed radially inwardly from said pads and positioned thereby, one end of said foil being secured to said shaft journal to preclude indexing thereof.
Claim 2
Dependent Claim
62 words
A self-pressurizing compliant hydrodynamic gas bearing comprising a shaft journal, a plurality of spring elements secured to the inner periphery of said shaft journal, a plurality of arcuate pads on said spring elements, respectively, and a flexible foil disposed radially inwardly from said pads and positioned thereby, one end of said foil being secured to said shaft journal to preclude indexing thereof.
Claim 3
Dependent Claim
36 words
A gas bearing in accordance with claim 1 wherein said spring elements are of generally U-shaped cross section having a slot in a bight portion thereof for the acceptance of a tab on said shaft journal.
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) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |