US5579744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankcase ventilator for internal combustion engines
Assignee: Mann and Hummel GmbH
•
Filing: 1995-06-30
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Granted: 1996-12-03
•
Expires: 2015-06-30
Abstract
Abstract A crankcase ventilating system for an internal combustion engine includes a vent line issuing from the crankcase and connected to a liquid separator. The liquid separator has a collecting chamber for separated liquid and at least two drain lines returning to the crankcase. The liquid separator also has a connection leading to the vacuum line of the internal combustion engine.
Inventors
- 👤 Walter Trefz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; F01M13/0405; F01M13/02; F01M13/021; F01M13/022; F01M13/023
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
A crankcase ventilator for an internal combustion engine comprising: a liquid separator connected with a vacuum line of the internal combustion engine and having a collecting chamber for separated liquid; a vent line communicating the liquid separator with a crankcase; and first and second outlet lines communicating the collecting chamber with the crankcase, said outlet lines being arranged substantially diametrically opposite each other.
Claim 2
Dependent Claim
63 words
A crankcase ventilator for an internal combustion engine comprising: a liquid separator connected with a vacuum line of the internal combustion engine and having a collecting chamber for separated liquid; a vent line communicating the liquid separator with a crankcase; and first and second outlet lines communicating the collecting chamber with the crankcase, said outlet lines being arranged substantially diametrically opposite each other.
Claim 3
Dependent Claim
20 words
A crankcase ventilator according to claim 1, wherein the first and second outlet lines lead into a common drain line.
Claim 4
Dependent Claim
31 words
A crankcase ventilator according to claim 1, wherein the collecting chamber comprises an annular trough, and said first and second outlet lines are connected to outlet openings in said annular trough.
Claim 5
Dependent Claim
67 words
A crankcase ventilator for an internal combustion engine comprising: a liquid separator connected with a vacuum line of the internal combustion engine and having a collecting chamber for separated liquid; a vent line communicating the liquid separator with a crankcase; at least three outlet lines communicating the collecting chamber with the crankcase, said at least three outlet lines being disposed at various positions in the collecting chamber.
Claim 6
Dependent Claim
67 words
A crankcase ventilator for an internal combustion engine comprising: a liquid separator connected with a vacuum line of the internal combustion engine and having a collecting chamber for separated liquid; a vent line communicating the liquid separator with a crankcase; at least three outlet lines communicating the collecting chamber with the crankcase, said at least three outlet lines being disposed at various positions in the collecting chamber.
Claim 7
Dependent Claim
20 words
A crankcase ventilator according to claim 4, wherein the at least three outlet lines lead into a common drain line.
Claim 8
Dependent Claim
31 words
A crankcase ventilator according to claim 4, wherein the collecting chamber comprises an annular trough, and said at least three outlet lines are connected to outlet openings in said annular trough.
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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) | 1999-12-03 | 2000-06-03 | 2000-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-03 | 2004-06-03 | 2004-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-03 | 2008-06-03 | 2008-12-03 | $7700.00 | Window Closed / Lapsed |