US3716968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for filtering and cleaning filters
Assignee: Daimler Benz AG
•
Filing: 1970-03-26
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Granted: 1973-02-20
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Expires: 1990-03-26
Abstract
Abstract An installation for cleaning a filter, particularly a paper filter or the like, arranged in the intake installation of a combustion engine, in which a blow-out device adapted to be connected with a compressed air source is arranged inside of the intake installation which has one or several discharge apertures that are directed preferably approximately perpendicularly against the filtered-air-side of the filter; additional blow-out devices may be provided on the outside of the filter whose discharge apertures are directed approximately tangentially to the outer side of the filter so as to remove from the filter those dust particles which have been loosened by the blast from the discharge apertures on the inside of the filter.
Inventors
- 👤 A Mischke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:30
CPC Classifications
B; B01; B01D; B01D41/00; B01D41/04; F; F02; F02M; F02M35/00; F02M35/02; F02M35/08; F02M35/086
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
120 words
A cleaning installation comprising a filter arranged in a filter housing within an air intake system of a combustion engine, said filter housing including means for directing unfiltered air through the filter from one side thereof and means for the exiting of filtered air at the other side thereof, blowout means mounted within the filter housing and connected with a compressed air means, said blow-out means including a rotating tubular member having a discharge aperture means for directing air substantially perpendicularly to the filtered air side of the filter about the surface thereof, and discharge nozzle means provided between the filter housing and the filter for directing air toward the unfiltered air side of the filter about the surface thereof.
Claim 2
Dependent Claim
120 words
A cleaning installation comprising a filter arranged in a filter housing within an air intake system of a combustion engine, said filter housing including means for directing unfiltered air through the filter from one side thereof and means for the exiting of filtered air at the other side thereof, blowout means mounted within the filter housing and connected with a compressed air means, said blow-out means including a rotating tubular member having a discharge aperture means for directing air substantially perpendicularly to the filtered air side of the filter about the surface thereof, and discharge nozzle means provided between the filter housing and the filter for directing air toward the unfiltered air side of the filter about the surface thereof.
Claim 3
Dependent Claim
120 words
A cleaning installation comprising a filter arranged in a filter housing within an air intake system of a combustion engine, said filter housing including means for directing unfiltered air through the filter from one side thereof and means for the exiting of filtered air at the other side thereof, blow-out means mounted within the filter housing and connected with a compressed air means, said blow-out means including a rotating tubular member having a discharge aperture means for directing air substantially perpendicularly to the filtered air side of the filter about the surface thereof, and discharge nozzle means provided between the filter housing and the filter for directing air toward the unfiltered air side of the filter about the surface thereof.
Claim 4
Dependent Claim
120 words
A cleaning installation comprising a filter arranged in a filter housing within an air intake system of a combustion engine, said filter housing including means for directing unfiltered air through the filter from one side thereof and means for the exiting of filtered air at the other side thereof, blow-out means mounted within the filter housing and connected with a compressed air means, said blow-out means including a rotating tubular member having a discharge aperture means for directing air substantially perpendicularly to the filtered air side of the filter about the surface thereof, and discharge nozzle means provided between the filter housing and the filter for directing air toward the unfiltered air side of the filter about the surface thereof.
Claim 5
Dependent Claim
34 words
An installation according to claim 1 characterized in that said tubular member is provided with additional tangentially directed discharge aperture means which serve for rotating said tubular member when compressed air is discharged therefrom.
Claim 6
Dependent Claim
10 words
An installation according to claim 1, including a paper filter.
Claim 7
Dependent Claim
15 words
An installation according to claim 1, characTerized in that the paper filter is cylindrically shaped.
Claim 8
Dependent Claim
34 words
An installation according to claim 1 characterized in that said discharge aperture means includes a plurality of small bores for directing jets of air substantially perpendicularly to the filtered air side of the filter.
Claim 9
Dependent Claim
38 words
An installation according to claim 5, characterized in that the tubular member extends at a slight distance substantially parallel to the inner surface of the filter and is provided with a central connecting means for the compressed air.
Claim 10
Dependent Claim
21 words
An installation according to claim 6, characterized in that the tubular member is provided with additional tangentially directed discharge aperture means.
Claim 11
Dependent Claim
31 words
An installation according to claim 7, characterized in that said discharge nozzle means are provided with discharge aperture means directed under a flat angle toward the unfiltered-air side of the filter.
Claim 12
Dependent Claim
29 words
An installation according to claim 8, characterized in that the discharge aperture means of said discharge nozzle means are directed substantially tangentially against the unfiltered-air side of the filter.
Claim 13
Dependent Claim
26 words
An installation according to claim 8, characterized in that said discharge nozzle means are constructed as tubular elements and are connected to a common annular channel.
Claim 14
Dependent Claim
23 words
An installation according to claim 10, characterized in that the filter housing is provided approximately at its lowest place with a separating space.
Claim 15
Dependent Claim
21 words
An installation according to claim 11, characterized in that the separating space includes a discharge means for discharging the accummulated dirt.
Claim 16
Dependent Claim
15 words
An installation according to claim 12, characterized in that the discharge means is automatically operating.
References Cited (Backward Citations)
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Cited
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Cited
US3095289A
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US3325978A
Cited
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Cited
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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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |