US5113836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for lowering harmful crankcase emissions in an internal combustion engine
Assignee: POLLUTION SOLUTIONS Ltd
•
Filing: 1991-03-25
•
Granted: 1992-05-19
•
Expires: 2011-03-25
Abstract
Abstract Apparatus for receiving crankcase emissions from an internal combustion engine and for separating the liquid portions of the emissions from the gaseous portion thereof. The apparatus includes a mounting flange, an opening for the return of the liquids to the engine, and at least one layer of filtering material. In one embodiment, the filtering material may be soaked with oil. Another embodiment has a screw mounted in the housing, and positioned to retard the flow of emissions exiting from the housing. The apparatus includes an outlet for return of the gaseous portion of the emissions to return to the combustion chamber via the PCV line or the induction manifold.
Inventors
- 👤 Theodore P. Sweeten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:17
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; F01M9/00; F01M9/02; F01M2013/0438; F02; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
47 words
In combination with a crankcase vent connected to an internal combustion engine, a device for separating emissions, said device comprising: a housing; an inlet for taking in crankcase emissions; filtering material; and manually adjustable metering means for selectively controlling the discharge of said emissions from said housing.
Claim 2
Dependent Claim
47 words
In combination with a crankcase vent connected to an internal combustion engine, a device for separating emissions, said device comprising: a housing; an inlet for taking in crankcase emissions; filtering material; and manually adjustable metering means for selectively controlling the discharge of said emissions from said housing.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1 wherein said filtering material is coated with oil.
Claim 4
Dependent Claim
16 words
The apparatus of claim 1 wherein said filtering material is coated with an oil enhancing product.
Claim 5
Dependent Claim
12 words
The apparatus of claim 3 wherein said oil enhancing product is STP.
Claim 6
Dependent Claim
13 words
The apparatus of claim 3 wherein said oil enhancing product is Energy Release.
Claim 7
Dependent Claim
13 words
The apparatus of claim 3 wherein said oil enhancing product is Morey's Stabilizer.
Claim 8
Dependent Claim
18 words
The apparatus of claim 1 wherein said filtering material is a mixture of silica gel and carbon particles.
Claim 9
Dependent Claim
12 words
The apparatus of claim 1 wherein said filtering material is silica gel.
Claim 10
Dependent Claim
12 words
The apparatus of claim 1 wherein said filtering material is carbon particles.
Claim 11
Dependent Claim
12 words
The apparatus of claim 1 wherein said filtering material is silica beads.
Claim 12
Dependent Claim
28 words
The apparatus of claim 1 wherein said metering means comprises a member screwed into the housing, and positioned to retard the flow of emissions exiting from said housing.
Claim 13
Dependent Claim
46 words
In a filter for separating crankcase vent emissions from an internal combustion engine, said device comprising: a housing; an inlet for taking in crankcase emissions; and filtering material; the improvement comprising: manually adjustable metering means for selectively controlling the discharge of said emissions from said housing.
Claim 14
Dependent Claim
46 words
In a filter for separating crankcase vent emissions from an internal combustion engine, said device comprising: a housing; an inlet for taking in crankcase emissions; and filtering material; the improvement comprising: manually adjustable metering means for selectively controlling the discharge of said emissions from said housing.
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) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |