US3855976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the quality of the combustion air of an engine
Assignee: Individual
•
Filing: 1973-10-10
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Granted: 1974-12-24
•
Expires: 1993-10-10
Abstract
Abstract An apparatus is provided for cleaning the combustion air of an air-cooled internal combustion engine and includes an air filter having a planar inlet surface over which a high velocity air stream is passed in a substantially parallel direction to permit a scouring effect sufficient to prevent foreign bodies carried by the air stream from accumulating on said inlet surface prior to passgae of the air stream carrying the foreign bodies over the cooling fins of the engine cylinder.
Inventors
- 👤 J Notaras
- 👤 A Notaras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:18
CPC Classifications
B; B27; B27B; B27B17/00; F; F01; F01P; F01P11/00; F01P11/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
A self-cleaning air filtering apparatus in combination with an internal combustion engine having a fan mounted on the engine, said apparatus including a cover overlying said fan and a portion of the cylinder of said engine, said cover provided with an air intake adjacent said fan communicating with an air flow chamber within said cover extending toward said engine cylinder, said cover having an opening therethrough upstream from and adjacent said cylinder, a planar filter medium disposed over said cover opening, cover means overlying said filter medium and provided with a passageway communicating with a combustion air intake port of said engine whereby, air directed by said fan from said air intake through said air flow chamber to said engine cylinder sweeps across said planar filter medium in the direction of orientation of the planar filter to constantly scour foreign particles therefrom and direct them past said cylinder.
Claim 2
Dependent Claim
148 words
A self-cleaning air filtering apparatus in combination with an internal combustion engine having a fan mounted on the engine, said apparatus including a cover overlying said fan and a portion of the cylinder of said engine, said cover provided with an air intake adjacent said fan communicating with an air flow chamber within said cover extending toward said engine cylinder, said cover having an opening therethrough upstream from and adjacent said cylinder, a planar filter medium disposed over said cover opening, cover means overlying said filter medium and provided with a passageway communicating with a combustion air intake port of said engine whereby, air directed by said fan from said air intake through said air flow chamber to said engine cylinder sweeps across said planar filter medium in the direction of orientation of the planar filter to constantly scour foreign particles therefrom and direct them past said cylinder.
Claim 3
Dependent Claim
28 words
A self-cleaning air filtering apparatus according to claim 1 wherein, the entire exposed surface of said filter medium is subjected to the sweeping action of said air flow.
Claim 4
Dependent Claim
21 words
A self-cleaning air filtering apparatus according to claim 1 wherein, said cover means comprises a removable housing having said passageway therein.
Claim 5
Dependent Claim
24 words
A self-cleaning air filtering apparatus according to claim 1 wherein, said filter medium comprises a non-stick material excluding particles in excess of five microns.
Claim 6
Dependent Claim
27 words
A self-cleaning air filtering apparatus according to claim 1 wherein, said filter medium comprises a thin fine-mesh layer backed up by a coarser more rigid supporting layer.
Claim 7
Dependent Claim
28 words
A self-cleaning air filtering apparatus according to claim 1 wherein, said cover includes a chamber for filtered air communicating with said passageway and said combustion air intake port.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |