US3730599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing assembly for spinning rotors
Assignee: SKF GmbH
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Filing: 1971-03-30
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Granted: 1973-05-01
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Expires: 1991-03-30
Abstract
Abstract A bearing assembly comprising a hollow cylindrical housing in which a shaft is axially arranged. The shaft and housing are enclosed at each end. A radial opening is provided in the housing forming an inlet port for lubricant. The opening is covered by an elastomeric sealing member penetrable by a lubricating tool.
Inventors
- 👤 R Fingerle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:01
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/66; F16C33/6603; F16C33/6607; D; D01; D01H; D01H4/00; D01H4/04; D01H4/08; D01H4/12; F16C33/6622; F16C2340/00; F16C2340/18
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
145 words
A bearing assembly comprising a hollow cylindrical housing, a shaft axially arranged within said housing and extending outwardly of each end, means surrounding said shaft for closing the ends of said housing, spaced anti-friction bearings rotatably journalling said shaft within said housing, a radial opening formed in the wall of said housing between said bearing, an elastomeric cover securing said opening, said cover being penetratable by means for supplying lubricant to said antifriction bearings and a hollow cylindrical sleeve intermEdiate said housing and said shaft, said sleeve being spaced from at least in part from the inner wall of said housing and from the outer wall of said shaft and arranged between said anti-friction bearings, said sleeve defining a lubricant storage chamber surrounding said shaft and a channel communicating with said radial opening and said anti-friction bearings for the free flow of lubricant directly therebetween.
Claim 2
Dependent Claim
145 words
A bearing assembly comprising a hollow cylindrical housing, a shaft axially arranged within said housing and extending outwardly of each end, means surrounding said shaft for closing the ends of said housing, spaced anti-friction bearings rotatably journalling said shaft within said housing, a radial opening formed in the wall of said housing between said bearing, an elastomeric cover securing said opening, said cover being penetratable by means for supplying lubricant to said antifriction bearings and a hollow cylindrical sleeve intermEdiate said housing and said shaft, said sleeve being spaced from at least in part from the inner wall of said housing and from the outer wall of said shaft and arranged between said anti-friction bearings, said sleeve defining a lubricant storage chamber surrounding said shaft and a channel communicating with said radial opening and said anti-friction bearings for the free flow of lubricant directly therebetween.
Claim 3
Dependent Claim
41 words
The assembly according to claim 1, wherein said housing is formed with a shallow circumferential groove on its outer wall surface, said radial opening being located within said groove and said elastomeric cover comprises an annular band secured within said groove.
Claim 4
Dependent Claim
38 words
The assembly according to claim 1 wherein said radial opening is provided with a cylindrical portion adjacent the outer wall surface of said housing and said elastomeric cover comprises a disk shaped member secured within said cylindrical portion.
Claim 5
Dependent Claim
32 words
The assembly according to claim 3 wherein said disk shaped cover is provided with at least one slot formed therein enabling creation of a passage on application of pressure to said cover.
Claim 6
Dependent Claim
30 words
The assembly according to claim 4 wherein said cover is formed with two slots, said slots intersecting each other in a cross thereby providing four flexible flaps forming said passage.
Claim 7
Dependent Claim
23 words
The assembly according to claim 1, wherein said radial opening has an inwardly directed conical portion adjacent the inner wall of said housing.
Claim 8
Dependent Claim
49 words
The assembly according to claim 1 wherein the outer wall of said sleeve is provided with a plurality of grooves extending longitudinally from one end to the other and a circumferential groove interconnecting said longitudinal grooves, said circumferential groove being aligned in the transverse plane of said radial opening.
Claim 9
Dependent Claim
26 words
The assembly according to claim 1 wherein said sleeve is made of elastomeric material and its inner wall is conical from one end to the other.
Claim 10
Dependent Claim
47 words
The assembly according to claim 1 wherein said sleeve is provided with an annular circumferential collar on its outer wall, and said housing is formed with an annular groove in its inner wall in which said collar is received to thereby secure said sleeve against axial movement.
Claim 11
Dependent Claim
66 words
The assembly according to claim 1, said sleeve defining in cooperation with said housing a first annular storage chamber sealed at each end and communicating with said radial opening, said sleeve defining with said shaft a second annular chamber open at each end for communication with said anti-friction bearings and including at least one radial duct connecting said first and second chambers for flow of lubricant.
Claim 12
Dependent Claim
55 words
The assembly according to claim 10 wherein said anti-friction bearings are arranged in an inner race formed on said shaft and an outer race secured to said housing, said sleeve being formed of rigid material having a peripheral edge at each end abutting said outer race and defining therewith a space surrounding said anti-friction bearings.
Claim 13
Dependent Claim
52 words
The assembly according to claim 1 including a radial disk secured to said shaft adjacent the closing means at each end of said housing, said radial disk being spaced from said cover member and being rotatable by said shaft to provide centrifugal means for preventing flow of lubricant axially from said housing.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |