US3981546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air bearing construction
Assignee: Individual
•
Filing: 1969-09-29
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Granted: 1976-09-21
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Expires: 1989-09-29
Abstract
Abstract The disclosure describes a floating bearing consisting of a plate, desirably rectangular but of other possible shapes and forms, which has an internal passageway system permitting air under pressure to be fed into the plate at one side thereof and to be discharged along the upper or lower faces of the plate, depending upon the side which is to be supported. The bearing plate or pad upon the side which carries the discharge openings for the air which insures the floating effect are desirably provided with a series of grooves or recesses in random or linear formation desirably in circular form, on the discharge face, which will engage the flowing air or fluid and tend to retain it for a longer period than a flat face.
Inventors
- 👤 Jacob H. Sperman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:16
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/38; B65; B65G; B65G7/00; B65G7/02; B65G7/06; F16C29/00; F16C29/02; F16C29/025; F16C2322/00; F16C2322/39
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A fluid bearing for supporting a load for movement in a plane substantially parallel to the plate comprising a rigid load supporting plate having substantially parallel upper and lower faces, one of said faces forming a surface for a load to be supported and the other of said faces forming a bearing surface, an internal fluid conduit system intermediate said upper and lower faces, a plurality of spaced outlet orifices extending vertically transversely through the plate between the internal conduit system and the bearing face and a plurality of fluid retaining grooves on said bearing face forming closed ended fluid paths in said bearing surface for receiving a portion of the fluid discharged from said orifices and for restraining the flow of such discharged fluid along said bearing surface. The fluid to be Air or Gas continuously supplied under pressure thru an inlet.
Claim 2
Dependent Claim
143 words
A fluid bearing for supporting a load for movement in a plane substantially parallel to the plate comprising a rigid load supporting plate having substantially parallel upper and lower faces, one of said faces forming a surface for a load to be supported and the other of said faces forming a bearing surface, an internal fluid conduit system intermediate said upper and lower faces, a plurality of spaced outlet orifices extending vertically transversely through the plate between the internal conduit system and the bearing face and a plurality of fluid retaining grooves on said bearing face forming closed ended fluid paths in said bearing surface for receiving a portion of the fluid discharged from said orifices and for restraining the flow of such discharged fluid along said bearing surface. The fluid to be Air or Gas continuously supplied under pressure thru an inlet.
Claim 3
Dependent Claim
18 words
The construction of claim 1, said grooves being randomly positioned over the entire bearing face of said plate.
Claim 4
Dependent Claim
32 words
The construction of claim 1, said grooves consisting of closed passages which have much less cross-sectional area than the orifices and extending primarily between and within the space covered by the orifices.
Claim 5
Dependent Claim
49 words
The construction of claim 1, said orifices being arranged around the periphery of the bearing face of the plate and said grooves being arranged interiorly of and exteriorly of said orifices upon said bearing face. Said orifices to have an inside diameter of 0.010 to 0.050 of an inch.
Claim 6
Dependent Claim
16 words
The construction of claim 1, said grooves consisting of a plurality of circles of varying diameter.
Claim 7
Dependent Claim
39 words
The construction of claim 1, said grooves having a cross-sectional area about 1/10 to 1/100 of the cross-sectional area of said orifices. Said grooves to have a depth not less than 0.00005 inches and not deeper than 0.0009 inches.
References Cited (Backward Citations)
GB177370A
Cited
US2683636A
Cited
US2848820A
Cited
US2938590A
Cited
US3169807A
Cited
US3376083A
Cited
US3439581A
Cited
US3513934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |