US3751118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contaminant deflection groove for gas bearing
Assignee: Individual
•
Filing: 1971-07-02
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Granted: 1973-08-07
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Expires: 1991-07-02
Abstract
Abstract A contaminant particle deflection groove in connection with an externally pressurized gas bearing assembly comprising a sleeve and a shaft with the exhaust perimeter thereof being at the end of said sleeve and the improvement herein consisting of a groove in the face of said sleeve about said exhaust perimeter. The jet of gas exhausting from said exhaust perimeter of said sleeve along the exposed surface of said shaft entrains streams of ambient air and the contaminant particles carried by said air and both are deflected by means of said groove into a path parallel to said jet for dispersal prior to contact of said shaft by said particles of contaminants.
Inventors
- 👤 H Arneson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:15
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0603; F16C32/0614
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
137 words
A contaminant deflection groove in connection with an externally pressurized bearing assembly having in combination, a pair of bearing members respectively having bearing surfaces in parallel opposed relationship to each other and having a bearing space therebetween, means injecting gas under pressure within said bearing space forming a bearing film, an exhaust perimeter at the edge of one of said bearing members for the escape of said bearing film to form a jet, the surface of the otHer of said bearing members extending beyond said exhaust perimeter forming an exposed bearing surface, and a groove formed in the end facing surface of said one of said bearing members closely spaced from said exhaust perimeter, the wall of said groove deflects the entrained air stream and the contaminants therein into a path parallel to said exposed bearing surface.
Claim 2
Dependent Claim
137 words
A contaminant deflection groove in connection with an externally pressurized bearing assembly having in combination, a pair of bearing members respectively having bearing surfaces in parallel opposed relationship to each other and having a bearing space therebetween, means injecting gas under pressure within said bearing space forming a bearing film, an exhaust perimeter at the edge of one of said bearing members for the escape of said bearing film to form a jet, the surface of the otHer of said bearing members extending beyond said exhaust perimeter forming an exposed bearing surface, and a groove formed in the end facing surface of said one of said bearing members closely spaced from said exhaust perimeter, the wall of said groove deflects the entrained air stream and the contaminants therein into a path parallel to said exposed bearing surface.
Claim 3
Dependent Claim
47 words
The structure set forth in claim 1, wherein said groove is spaced from said exhaust perimeter at least 0.010 inches or 0.01 times the numerical value of the magnitude of said jet expressed in cubic inches per second per inch of exhaust perimeter, whichever is the greater.
Claim 4
Dependent Claim
49 words
The structure set forth in claim 1, wherein the width of said groove is at least 0.02 times the magnitude of said jet in cubic inches per second per inch of exhaust perimeter, and the depth of said groove is at least 0.008 times said magnitude of said jet.
Claim 5
Dependent Claim
27 words
The structure set forth in claim 1, wherein said exhaust perimeter is recessed inwardly of the plane of said end facing surface of said one bearing member.
Claim 6
Dependent Claim
38 words
The structure set forth in claim 1, wherein said groove is spaced from said exhaust perimeter 0.01 times the numerical value of the magnitude of said jet expressed in cubic inches per second per inch of exhaust perimeter.
References Cited (Backward Citations)
US3494673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |