US3679278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil seal arrangements for rotary shafts
Assignee: Individual
•
Filing: 1970-09-02
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Granted: 1972-07-25
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Expires: 1990-09-02
Abstract
Abstract An oil seal arrangement for a rotary shaft which is supported by a bearing within an end closure of a casing, the casing having a shroud which extends around an extended portion of the shaft, and there is provided a passage in the shroud and through which air can be forced through the bearing into the casing and the shaft is provided with a passage through which air can escape from the casing. In order to prevent escape of oil from the casing a baffle is provided and through which the air leaving the casing passes, the baffle acting to coalesce any oil entrained with the air. The baffle is subjected to centrifugal force so that the coalesced oil will be returned to the interior of the casing.
Inventors
- 👤 Sydney Lucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:07
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F16C; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C33/00; F16C33/30; F16C33/66; F16C33/6637; F16C33/6685; F16C33/72; F16C33/76; F16C33/762; Y; Y10; Y10S; Y10S277/00; Y10S277/918
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
An oil seal arrangement for a rotary shaft of the kind comprising a shaft extending from within a hollow housing, an end closure for the housing and a bearing receiving said shaft mounted in said end closure, the oil seal arrangement comprising, means for directing gas through the bearing into the housing thereby to minimize the flow of oil from the housing through the bearing, passage means formed in the shaft to allow the gas to escape from the housing, an oil baffle incorporated in said passage means, said oil baffle being is mounted upon the shaft and which coalesces acting to coalesces and oil mist, the oil being returned to the housing by the action of centrifugal force.
Claim 2
Dependent Claim
119 words
An oil seal arrangement for a rotary shaft of the kind comprising a shaft extending from within a hollow housing, an end closure for the housing and a bearing receiving said shaft mounted in said end closure, the oil seal arrangement comprising, means for directing gas through the bearing into the housing thereby to minimize the flow of oil from the housing through the bearing, passage means formed in the shaft to allow the gas to escape from the housing, an oil baffle incorporated in said passage means, said oil baffle being is mounted upon the shaft and which coalesces acting to coalesces and oil mist, the oil being returned to the housing by the action of centrifugal force.
Claim 3
Dependent Claim
177 words
An oil seal arrangement for a rotary shaft of the kind comprising a shaft extending from within a hollow housing, an end closure for the housing and a bearing receiving said shaft mounted in said end closure, the oil seal arrangement comprising an extension of the end closure surrounding a portion of the shaft exterior of the housing, a passage formed in said extension for communication at one end with a source of gas under pressure, an annular space defined about said shaft, said passage communicating with said space, a helical groove intermediate said space and the bearing and along which gas flows through the bearing into the housing, a passage formed in said shaft, said passage communicating with the exterior and the interior of the housing and an oil baffle disposed at the end of said passage interior of the housing, said baffle acting to coalesce any oil mist tending to flow along said passage, said baffle being subjected to centrifugal force to return the oil retained by the baffle to the interior of the housing.
Claim 4
Dependent Claim
177 words
An oil seal arrangement for a rotary shaft of the kind comprising a shaft extending from within a hollow housing, an end closure for the housing and a bearing receiving said shaft mounted in said end closure, the oil seal arrangement comprising an extension of the end closure surrounding a portion of the shaft exterior of the housing, a passage formed in said extension for communication at one end with a source of gas under pressure, an annular space defined about said shaft, said passage communicating with said space, a helical groove intermediate said space and the bearing and along which gas flows through the bearing into the housing, a passage formed in said shaft, said passage communicating with the exterior and the interior of the housing and an oil baffle disposed at the end of said passage interior of the housing, said baffle acting to coalesce any oil mist tending to flow along said passage, said baffle being subjected to centrifugal force to return the oil retained by the baffle to the interior of the housing.
Claim 5
Dependent Claim
33 words
An oil seal arrangement as claimed in claim 2 in which said helical groove is formed in the shaft and is arranged to return any oil passing through the bearing to the housing.
Claim 6
Dependent Claim
37 words
An oil seal arrangement as claimed in claim 3 in which a plurality of circumferential grooves are formed in the shaft, the grooves being disposed on the opposite side of the annular space to said helical groove.
Claim 7
Dependent Claim
24 words
An oil seal arrangement as claimed in claim 4 in which said baffle is of annular form and is formed as a porous structure.
Claim 8
Dependent Claim
19 words
An oil seal arrangement as claimed in claim 5 in which the baffle is formed as a wire matrix.
References Cited (Backward Citations)
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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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |