US3779221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine pollution control device
Assignee: Individual
•
Filing: 1971-11-23
•
Granted: 1973-12-18
•
Expires: 1991-11-23
Abstract
Abstract A pollution control device for automobile engines and the like is provided having a housing adapted to receive the blowby gasses from the engine crankcase. The housing has a filter assembly for filtering the blowby gasses and inlet means for mixing the gasses with air to increase oxidation of the pollutants in the gasses. The treated gasses are supplied to the engine intake manifold through the positive crankcase ventilation valve. Alternative embodiments of the invention provide for heating the blowby gasses in the housing, eliminating the need for the positive crankcase ventilation valve, and for sonic mixing of the air and blowby gasses in the housing.
Inventors
- 👤 J Gartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:25
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/06; F01; F01M; F01M13/00; F01M13/04; F01M13/02; F01M13/021; F01M13/022; F01M13/023; F01M13/0011; F01M2013/0027; F01M2013/0455; F01M2013/0472; F01M5/00; F01M5/001; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
91 words
A pollution control device for internal combustion engines having a positive crankcase ventilation valve comprising a hollow housing having an inlet opening adapted to be coupled to the crankcase of said engine to receive the blowby gasses therefrom, an outlet opening adapted to be coupled to said positive crankcase ventilation valve of the engine, and an air inlet passageway for supplying air to the blowby gasses; and a mechanical filter assembly disposed in said housing between said inlet and outlet openings for filtering the blowby gasses to remove the pollutants therefrom.
Claim 2
Dependent Claim
91 words
A pollution control device for internal combustion engines having a positive crankcase ventilation valve comprising a hollow housing having an inlet opening adapted to be coupled to the crankcase of said engine to receive the blowby gasses therefrom, an outlet opening adapted to be coupled to said positive crankcase ventilation valve of the engine, and an air inlet passageway for supplying air to the blowby gasses; and a mechanical filter assembly disposed in said housing between said inlet and outlet openings for filtering the blowby gasses to remove the pollutants therefrom.
Claim 3
Dependent Claim
31 words
A pollution control device as claimed in claim 1 further comprising means adapted to be coupled to the exhaust manifold of the engine for heating the blowby gasses in said housing.
Claim 4
Dependent Claim
58 words
A pollution control device as claimed in claim 2 wherein said filter assembly comprises a stack of spaced filter plates, each of said filter plates having a plurality of spaced filter apertures therein, said housing has an inwardly projecting wall portion defining a cavity therein, and said heating means comprises a heat exchanger removably disposed in said cavity.
Claim 5
Dependent Claim
70 words
A pollution control device as claimed in claim 1 wherein said filter assembly comprises a shaft member, a stack of spaced filter plates slidably disposed on said shaft member for support thereby, each of said filter plates having a plurality of radially-disposed filter slots formed therein, and a pair of end plates slidably disposed on said shaft member for support thereby at opposite ends of said stack of filter plates.
Claim 6
Dependent Claim
79 words
A pollution control device fingers claimed in claim 4 wherein said filter slots are formed by a plurality of radially-disposed fingers cut from the filter plate to leave a plurality of radially-disposed slotted openings in the plate, each of said fingers being supported at one end thereof by the plate and being spaced a distance from the plane of the plate, so that the radially-disposed edges of the ingers cooperate with said slotted openings to form the filter slots.
Claim 7
Dependent Claim
77 words
A pollution control device as claimed in claim 4 wherein each of said end plates has a larger area than the area of each of said filter plates, so that the filter assembly is centered in said housing by the end plates, said end plates being provided with openings having an area considerably larger than the area of said filter plates so that the filter assembly may be cleaned by the passage of a cleaning fluid therethrough.
Claim 8
Dependent Claim
47 words
A pollution control device as claimed in claim 5 wherein each of said end plates is formed by one of said filter plates and has a plurality of notches formed about the periphery thereof to permit cleaning of the filter assembly and drainage of the condensate therefrom.
Claim 9
Dependent Claim
52 words
A pollution control device as claimed in claim 4 wherein one of said end plates has a plurality of radially-disposed apertures formed therein and a leaf spring having a plurality of radially-disposed fingers is provided tO seal the apertures, so that gas flow through the filter assembly is limited to one direction.
Claim 10
Dependent Claim
56 words
A pollution control device as claimed in claim 1 further comprising a sonic mixing chamber disposed in said housing for mixing the blowby gasses with the air from said air inlet passageway, said mixing chamber having a passageway with a throat portion of reduced cross-sectional area which is adapted to receive the blowby gasses and air.
Claim 11
Dependent Claim
38 words
A pollution control device as claimed in claim 6 wherein said hollow housing is provided with a drain opening, and a closed storage container is connected to said drain opening to receive pollutants filtered from said blowby gasses.
Claim 12
Dependent Claim
43 words
A pollution control device as claimed in claim 10 wherein said hollow housing is cylindrical, said filter plates and end plates are circular, and said inlet opening and outlet opening are formed by cylindrical hose fittings disposed at opposite ends of said housing.
Claim 13
Dependent Claim
71 words
A pollution control device as claimed in claim 11 wherein each of said radially-disposed filter slots is approximately 0.010 inch wide, and the total filtering area provided by said filter slots and the clearance between said stack of filter plates and the inside diameter of said housing is at least equal to the cross-sectional area of said outlet opening, so that no back pressure is formed during operation of the device.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |