US4286829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing for high rotational speeds
Assignee: SKF Industrial Trading and Development Co BV
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Filing: 1979-09-28
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Granted: 1981-09-01
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Expires: 1999-09-28
Abstract
Abstract A system for lubricating a bearing adapted for high rotational speed comprising a stationary and a rotatable race ring and a plurality of rolling elements guided by a cage in the annular space between the rings. The lubricating system for supplying lubricant to the races of the bearing comprises a ring made of a porous material fixed adjacent at least one axial end of the stationary race, an annular lubricant source located adjacent the porous ring which extends into the region of the running surface of the rotating race whereby the lubricant under the influence of negative pressure generated by high rotation is drawn from the lubricant reservoir through the porous ring, circulated through the bearing raceways and rolling elements and returned to the porous ring along the running surface of the stationary race ring.
Inventors
- 👤 Rutgerus S. Heemskerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:28
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/02; F16C19/14; F16C19/16; F16C19/163; F16C33/00; F16C33/30; F16C33/66; F16C33/6637; F16C33/664; F16C33/6648; F16C33/6681; F16C33/72; F16C33/76; F16C33/78; F16C33/7886
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
162 words
A bearing for high rotational speeds, comprising a stationary and a rotatable race ring, a plurality of rolling elements in the annular space between the rings, a cage for spacing the rolling elements, and a lubricating system to supply lubricant to the raceways of the bearing, characterized by a ring made of a porous material fixed in at least one end part of said stationary ring adjoined by a source of lubricant, a part of said ring of porous material extending into the vicinity of the running surface of the rotating raceway such that the lubricant, under the influence of negative pressure generated by high rotation, is drawn out from said end part and moved from said part in a direction to the said stationary race ring and returned to the porous ring once more on the running surfaces of said stationary race ring, and a recess formed in the porous ring and adjoining the stationary race defining a reservoir for lubricant.
Claim 2
Dependent Claim
162 words
A bearing for high rotational speeds, comprising a stationary and a rotatable race ring, a plurality of rolling elements in the annular space between the rings, a cage for spacing the rolling elements, and a lubricating system to supply lubricant to the raceways of the bearing, characterized by a ring made of a porous material fixed in at least one end part of said stationary ring adjoined by a source of lubricant, a part of said ring of porous material extending into the vicinity of the running surface of the rotating raceway such that the lubricant, under the influence of negative pressure generated by high rotation, is drawn out from said end part and moved from said part in a direction to the said stationary race ring and returned to the porous ring once more on the running surfaces of said stationary race ring, and a recess formed in the porous ring and adjoining the stationary race defining a reservoir for lubricant.
Claim 3
Dependent Claim
36 words
Bearing according to claim 1, characterized in that the (each) porous ring has a portion directed inward on the side of the rotating race, the terminal surface whereof extends near the running surface of one race.
Claim 4
Dependent Claim
16 words
Bearing according to claim 2, characterized in that the portion directed inward tapers to a point.
Claim 5
Dependent Claim
30 words
Bearing according to claim 1, characterized in that, on the inner side of the (each) porous ring, a sealing ring is arranged, extending into the vicinity of the stationary race.
Claim 6
Dependent Claim
35 words
Bearing according to claim 1, characterized in that a sealing layer, at least for the lubricant, is arranged on the inner side of the (each) porous ring, which layer extends close to the stationary race.
Claim 7
Dependent Claim
29 words
Bearing according to claim 1, characterized in that, on the outer side of the (each) porous ring, a sealing ring or plate is arranged, partially enclosing the porous ring.
Claim 8
Dependent Claim
26 words
Bearing according to claim 1, characterized in that the (each) porous ring is provided on the outerside with a protective layer sealing it against the lubricant.
Claim 9
Dependent Claim
17 words
Bearing according to claim 1, characterized in that the (each) porous ring is made of sintered material.
Claim 10
Dependent Claim
33 words
A bearing according to claim 1 including a porous plate fixed on opposite sides of said stationary race, each ring having an end part close to said rolling elements and rotatable race ring.
Claim 11
Dependent Claim
185 words
A bearing for high rotational speeds, comprising a stationary and a rotatable race ring, a plurality of rolling elements in the annular space between the rings, a cage for spacing the rolling elements, and a lubricating system to supply lubricant to the raceways of the bearing, characterized by a ring made of a porous material fixed in at least one end part of said stationary ring adjoined by a source of lubricant, a part of said ring of porous material extending into the vicinity of the running surface of the rotating raceway such that the lubricant, under the influence of negative pressure generated by high rotation, is drawn out from said end part and moved from said part in a direction to the said stationary race ring and returned to the porous ring once more on the running surfaces of said stationary race ring, and a recess formed in the porous ring and adjoining the stationary race defining a reservoir for lubricant, said source of lubricant consisting of an absorbent ring saturated with a lubricant and arranged in said recess and adjoining the stationary race.
Claim 12
Dependent Claim
185 words
A bearing for high rotational speeds, comprising a stationary and a rotatable race ring, a plurality of rolling elements in the annular space between the rings, a cage for spacing the rolling elements, and a lubricating system to supply lubricant to the raceways of the bearing, characterized by a ring made of a porous material fixed in at least one end part of said stationary ring adjoined by a source of lubricant, a part of said ring of porous material extending into the vicinity of the running surface of the rotating raceway such that the lubricant, under the influence of negative pressure generated by high rotation, is drawn out from said end part and moved from said part in a direction to the said stationary race ring and returned to the porous ring once more on the running surfaces of said stationary race ring, and a recess formed in the porous ring and adjoining the stationary race defining a reservoir for lubricant, said source of lubricant consisting of an absorbent ring saturated with a lubricant and arranged in said recess and adjoining the stationary race.
Claim 13
Dependent Claim
14 words
Bearing according to claim 10, characterized in that the absorbent ring consists of felt.
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) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |