Patent US4314705A successfully refreshed from Google Patents.
US4314705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil seal device
Assignee: IHI Corp
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Filing: 1980-05-19
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Granted: 1982-02-09
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Expires: 2000-05-19
Abstract
Abstract Disclosed is an oil seal device using oil seal rings and a centrifugal oil thrower and having a construction such that the oil seal rings are provided on each side of the oil thrower to minimize the amount of oil that leaks to the oil thrower.
Inventors
- 👤 Masami Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:45
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/18; F01D25/183; F01D25/186; F01D11/00; F01D11/003; F16; F16C; F16C17/00; F16C17/12; F16C17/18; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/72; F16C33/74; F16J; F16J15/00; F16J15/002; F16J15/004; F16J15/16; F16J15/34; F16J15/3404; F16J15/54; F16C17/02; F16C2360/00; F16C2360/23; F16C2360/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
In a high speed rotating machine, in combination: (a) a common rotating turbine and blower shaft; (b) a bearing casing having a bearing portion and an oil discharge chamber formed below said bearing portion; (c) an oil thrower laterally spaced from said casing and mounted on said shaft; (d) a floating metal structure supported in said casing bearing portion and supporting said shaft; (e) first and second oil seal rings, the first of said oil seal rings being mounted in said casing between and laterally spaced from said oil thrower and one end of said floating metal structure and the second of said oil seal rings being mounted in machine structure on an opposite side of said thrower; and (f) structural means forming oil release and gap openings enabling oil accumulating between said first oil seal ring and said floating metal structure to be communicated to said oil discharge chamber.
Claim 2
Dependent Claim
150 words
In a high speed rotating machine, in combination: (a) a common rotating turbine and blower shaft; (b) a bearing casing having a bearing portion and an oil discharge chamber formed below said bearing portion; (c) an oil thrower laterally spaced from said casing and mounted on said shaft; (d) a floating metal structure supported in said casing bearing portion and supporting said shaft; (e) first and second oil seal rings, the first of said oil seal rings being mounted in said casing between and laterally spaced from said oil thrower and one end of said floating metal structure and the second of said oil seal rings being mounted in machine structure on an opposite side of said thrower; and (f) structural means forming oil release and gap openings enabling oil accumulating between said first oil seal ring and said floating metal structure to be communicated to said oil discharge chamber.
Claim 3
Dependent Claim
45 words
In a high speed rotating machine as claimed in claim 1 wherein said structural means forms a gap between said first oil seal ring and said floating metal structure and said gap forms part of an oil release path communicating with said oil discharge chamber.
Claim 4
Dependent Claim
36 words
In a high speed rotating machine as claimed in claim 2 and wherein said structural means includes oil release openings formed in said bearing portion of said casing and communicating with said chamber and said gap.
Claim 5
Dependent Claim
32 words
In a high speed rotating machine as claimed in claim 1 wherein said structural means includes oil release openings formed in said bearing portion of said casing and communicating with said chamber.
Claim 6
Dependent Claim
30 words
In a high speed rotating machine as claimed in claim 1 wherein said structural means includes said floating metal structure and said floating metal structure includes said oil release openings.
Claim 7
Dependent Claim
30 words
In a high speed rotating machine as claimed in claim 5 wherein said oil release openings comprise oil release openings formed through and running lengthwise of said floating metal structure.
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) | 1985-02-08 | 1985-08-10 | 1986-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-08 | 1989-08-10 | 1990-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-08 | 1993-08-10 | 1994-02-09 | $7700.00 | Window Closed / Lapsed |