US3645589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air bearing with low tensile strength permeable sleeve
Assignee: Motors Liquidation Co
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Filing: 1970-12-03
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Granted: 1972-02-29
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Expires: 1990-12-03
Abstract
Abstract An externally pressurized, gas-bearing roll shell has a low tensile strength, permeable sleeve restricting gas flow to the gas load carrying layer. Three schemes are shown for mounting the permeable sleeve on a stationary mandrel in such a manner that excessive tensile stress is not imparted to the sleeve.
Inventors
- 👤 Melvyn R Bird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:08
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0603; F16C32/0614; F16C32/0618; F16C13/00; F16C13/02; F16C13/022
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
122 words
In an externally pressurized gas-bearing roll shell having a stationary member with a supply plenum into which pressurized gas is fed for distribution through a permeable member to a gas film rotatably supporting a cylindrical sleeve on the stationary member, the improvement comprising, said stationary member having a groove in its outer circumferential surface, said permeable member being concentric with said stationary member and comprising a permeable, low tensile strength sleeve overlying said groove, and annular band means mounted on one of said members to effect a seal therebetween to provide said plenum for the reception of pressurized gas and to axially fix said members with respect to each other without producing excessive tensile stresses in the permeable, low tensile strength sleeve.
Claim 2
Dependent Claim
122 words
In an externally pressurized gas-bearing roll shell having a stationary member with a supply plenum into which pressurized gas is fed for distribution through a permeable member to a gas film rotatably supporting a cylindrical sleeve on the stationary member, the improvement comprising, said stationary member having a groove in its outer circumferential surface, said permeable member being concentric with said stationary member and comprising a permeable, low tensile strength sleeve overlying said groove, and annular band means mounted on one of said members to effect a seal therebetween to provide said plenum for the reception of pressurized gas and to axially fix said members with respect to each other without producing excessive tensile stresses in the permeable, low tensile strength sleeve.
Claim 3
Dependent Claim
53 words
The improvement as defined in claim 1 wherein said annular band means comprises a pair of spaced annular bands mounted on said stationary member, each of said bands being on an opposite side of the groove in said stationary member and sealingly engaging a radial face on said permeable, low tensile strength sleeve.
Claim 4
Dependent Claim
53 words
The improvement as defined in claim 1 wherein said annular band means are mounted on the outer periphery of said permeable, low tensile strength sleeve and effect a seal between said sleeve and said stationary member by compressively loading said sleeve into tight engagement with the outer circumferential surface of said stationary member.
Claim 5
Dependent Claim
47 words
The improvement as defined in claim 1 wherein said annular band means comprises a perforate sleeve mounted on the outer periphery of said permeable, low tensile strength sleeve which compressively loads said permeable sleeve into tight engagement with said stationary member of opposite sides of said plenum.
Claim 6
Dependent Claim
103 words
In an externally pressurized gas-bearing roll shell having a stationary member with a supply plenum into which pressurized gas is fed for distribution through a porous sleeve to a gas film rotatably supporting a cylindrical sleeve on the stationary member, the improvement comprising, said stationary member having a groove in its outer circumferential surface, said porous sleeve having a permeable, low tensile strength and mounted on said member and overlying said groove, and annular band means mounted on the outer periphery of said sleeve and compressing said sleeve into tight engagement with said member without producing excessive tensile stresses in said porous sleeve.
Claim 7
Dependent Claim
103 words
In an externally pressurized gas-bearing roll shell having a stationary member with a supply plenum into which pressurized gas is fed for distribution through a porous sleeve to a gas film rotatably supporting a cylindrical sleeve on the stationary member, the improvement comprising, said stationary member having a groove in its outer circumferential surface, said porous sleeve having a permeable, low tensile strength and mounted on said member and overlying said groove, and annular band means mounted on the outer periphery of said sleeve and compressing said sleeve into tight engagement with said member without producing excessive tensile stresses in said porous sleeve.
Claim 8
Dependent Claim
44 words
The improvement as defined in claim 5 wherein said annular band means comprises a pair of spaced metal bands shrunk fit onto the end portions, respectively, of the permeable sleeve which overlie the portions of the stationary member outer circumferential surface adjacent the groove.
Claim 9
Dependent Claim
48 words
The improvement as defined in claim 5 wherein said annular band means comprises a perforate sleeve mounted on the outer periphery of said permeable, low tensile strength sleeve, said perforate sleeve being of a relatively high tensile strength material and of the same material as said cylindrical sleeve.
References Cited (Backward Citations)
US3527510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |