US4721184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil control system
Assignee: Ingersoll Rand Co
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Filing: 1987-01-28
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Granted: 1988-01-26
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Expires: 2007-01-28
Abstract
Abstract In the disclosed embodiment, the system has a gear housing and an oil reservoir in juxtaposition, with a separated wall therebetween, and a metering channel in penetration of the wall. A gear in the housing throws oil from the lower portion of the housing (i.e., the sump) upwardly to lubricate a meshing gear, bearings, and seals, etc., and to discharge some of the oil through the wall separation into the reservoir. As a consequence of the latter, the oil level in the sump is transformed from a high static level to a lowered, dynamic level in which only the teeth of the oil-throwing gear contact the oil. The metering channel insures that the housing will have some oil constantly supplied thereto from the reservoir, while the latter gear is throwing oil, and that the static level will subsequently return when the gear is halted.
Inventors
- 👤 Brian D. Sowards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:20
CPC Classifications
F; F16; F16N; F16N29/00; F16N29/04; F16H; F16H57/00; F16H57/04; F16H57/0447; F16N7/00; F16N7/14; F16N7/26; F16H57/045; F16H57/0457; F16H57/048; F16H57/0493; F16H57/0495
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
248 words
An oil control system, comprising: a housing; a pair of gears confined, and rotatable on parallel axes, within said housing; an oil reservoir; and separate, first and second means for effecting fluid communication between said housing and said reservoir; wherein said housing and reservoir share a common top and a common base, and have a common wall interposed therebetween; one of said gears is in adjacency to said base, and comprises means for impelling oil from said housing to said reservoir via one of said first and second means; said wall has an opening therein which defines one of said first and second means; said wall has two, straight separate portions; one of said portions rises, perpendicularly, from said base, and the other of said two portions depends, perpendicularly, from said top; said portions subsist in separate, parallel planes and define, therebetween, an open, vertical space which provides an unobstructed pathway for impelled oil to loft, freely, into said reservoir; said one and other portions have linear, terminal edges, spaced-apart from each other, which, therebetween define said opening as a rectilinear void; said other gear of said pair thereof is in adjacency to said top, and said axis thereof is at a prescribed distance from said top; said terminal edge of said other portion is at a given distance from said top which is less than said prescribed distance, whereby impelled oil can freely loft into adjacency to said top and lubricate uppermost portions of said other gear.
Claim 2
Dependent Claim
248 words
An oil control system, comprising: a housing; a pair of gears confined, and rotatable on parallel axes, within said housing; an oil reservoir; and separate, first and second means for effecting fluid communication between said housing and said reservoir; wherein said housing and reservoir share a common top and a common base, and have a common wall interposed therebetween; one of said gears is in adjacency to said base, and comprises means for impelling oil from said housing to said reservoir via one of said first and second means; said wall has an opening therein which defines one of said first and second means; said wall has two, straight separate portions; one of said portions rises, perpendicularly, from said base, and the other of said two portions depends, perpendicularly, from said top; said portions subsist in separate, parallel planes and define, therebetween, an open, vertical space which provides an unobstructed pathway for impelled oil to loft, freely, into said reservoir; said one and other portions have linear, terminal edges, spaced-apart from each other, which, therebetween define said opening as a rectilinear void; said other gear of said pair thereof is in adjacency to said top, and said axis thereof is at a prescribed distance from said top; said terminal edge of said other portion is at a given distance from said top which is less than said prescribed distance, whereby impelled oil can freely loft into adjacency to said top and lubricate uppermost portions of said other gear.
Claim 3
Dependent Claim
30 words
An oil control system, according to claim 11, wherein: the other of said first and second means comprises a metering channel in penetration of said one portion of said wall.
Claim 4
Dependent Claim
45 words
An oil control system, according to claim 1, wherein: said housing comprises an oil sump having a given, static oil level, and another, dynamic oil level; and said oil impelling means comprises one gear for transforming said static oil level to said dynamic oil level.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |