US3837716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air, gas or fluid bearings
Assignee: Federal Mogul Westwind Air Bearings Ltd
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Filing: 1972-11-15
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Granted: 1974-09-24
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Expires: 1992-11-15
Abstract
Abstract A fluid bearing which comprises first and second mutually facing relatively rotatable members, one of the mutually facing surfaces having formed therein a recess acting as a fluid reservoir to which is supplied pressure fluid via a supply conduit and a series of blind ended, preferably parallel, grooves formed in that one surface and in communication with the recess.
Inventors
- 👤 N Allen
- 👤 W Kammerling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:55
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0629; F16C32/064; F16C32/0651; F16C32/0659; F16C32/0681; F16C32/0692
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
A fluid bearing comprising first and second relatively rotatable members having mutually facing axially extending surfaces, one of said surfaces having a recess formed therein which serves as a fluid reservoir, a supply conduit in communication with said recess for, during the bearing operation, supplying fluid at the supply pressure to said recess, and a plurality of blind ended grooves which are formed in said one surface and are in communication with said recess, one of said members including an annular depression therein and at least a portion of the other of said members being positioned in said depression so as to provide mutually facing radially extending surfaces, at least one of said radially extending surfaces including further grooves therein.
Claim 2
Dependent Claim
120 words
A fluid bearing comprising first and second relatively rotatable members having mutually facing axially extending surfaces, one of said surfaces having a recess formed therein which serves as a fluid reservoir, a supply conduit in communication with said recess for, during the bearing operation, supplying fluid at the supply pressure to said recess, and a plurality of blind ended grooves which are formed in said one surface and are in communication with said recess, one of said members including an annular depression therein and at least a portion of the other of said members being positioned in said depression so as to provide mutually facing radially extending surfaces, at least one of said radially extending surfaces including further grooves therein.
Claim 3
Dependent Claim
46 words
A fluid bearing as claimed in claim 1 wherein one of said members is a shaft and the other of said members is a bearing, and said depression is formed in said shaft and at least a portion of said bearing is positioned in said depression.
Claim 4
Dependent Claim
62 words
A fluid bearing as claimed in claim 2 wherein a said annular recess is formed at each Of the opposite ends of said depression, said blind ended grooves extending axially from said recesses towards the center of said depression and said further grooves being formed in a said radially extending surface formed by said shaft and extending radially from a said recess.
Claim 5
Dependent Claim
39 words
A fluid bearing as claimed in claim 3 wherein said further grooves comprise first and second series of radial grooves formed in first and second radially extending surfaces of said shaft and extending radially from respective of said recesses.
Claim 6
Dependent Claim
34 words
A fluid bearing as claimed in claim 3 further comprising an annular groove formed in said radially extending surface, said further grooves being in communication with said annular groove at the outer ends thereof.
Claim 7
Dependent Claim
36 words
A fluid bearing as claimed in claim 2 wherein said depression is formed in the outer peripheral surface of said shaft and said bearing includes a radially inwardly extending flange which is positioned in said depression.
Claim 8
Dependent Claim
39 words
A fluid bearing as claimed in claim 6 wherein said recess is formed in an axially extending surface of said bearing member, said bearing member further including an outlet located in said flange and connected to said supply conduit.
Claim 9
Dependent Claim
40 words
A fluid bearing a claimed in claim 7 wherein said bearing includes a further recess located at the intersection of said axially extending surface and a said radially extending surface, and an outlet conduit in communication with said further recess.
Claim 10
Dependent Claim
27 words
A fluid bearing as claimed in claim 6 wherin said further grooves comprise first and second sets of radial grooves located on opposite sides of said flange.
Claim 11
Dependent Claim
47 words
A fluid bearing as claimed in claim 8 wherein said flange includes first and second annular grooves located in opposite sides thereof, said radial grooves of said first and second sets being in communication at the outer ends thereof with said first and second annular grooves, respectively.
Claim 12
Dependent Claim
113 words
A fluid bearing as claimed in claim 6 wherein said bearing member includes a further recess located in the axially extending surface thereof and an outlet conduit connected to said recess, the first mentioned recess being located at the intersection of said axially extending surface and a radially extending surface and the flange of said bearing member including an outlet located in one radially extending surface thereof and in communication with said supply conduit, and a plurality of blind ended grooves in communication with said outlet, said flange further including a plurality of blind ended grooves located in the other radially extending surface thereof and in communication with the said first mentioned recess.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |