US3630182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antipollution system for internal combustion engines
Assignee: LEWIS M D GRAINGER
•
Filing: 1970-06-17
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Granted: 1971-12-28
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Expires: 1990-06-17
Abstract
Abstract An antipollution system for internal combustion engines in which a blower-forming part of the fan blade of the engine draws fumes from the crankcase of the engine and feeds the fumes along with fresh air through a heat exchanger to heat the gases and then to an oil bath air cleaner air intake of the carburetor. A portion of the fumes and air are fed to an exhaust-gas-pollution-burning device.
Inventors
- 👤 Lewis M D Grainger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:11
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/30; F01M; F01M13/00; F01M13/02; F02; F02F; F02F7/00; F02F7/006; F02M; F02M35/00; F02M35/02; F02M35/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/19; Y10S55/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
27 words
A device claimed in claim 1 wherein a conduit extends from said oil filler pipe to said combined fan and blower for removing fumes from said crankcase.
Claim 2
Dependent Claim
28 words
A device as claimed in claim 1 wherein a conduit extends from said valve chamber to said combined fan and blower to remove fumes from said valve chamber.
Claim 3
Dependent Claim
27 words
A device as claimed in claim 1 wherein means are provided for heating the air from said combined fan and blower prior to delivery to said carburetor.
Claim 4
Dependent Claim
83 words
A device as claimed in claim 1 wherein an oil bath air cleaner is mounted on said carburetor and the air is directed thereto by said conduit means, said air cleaner including an outer annular passage for producing a downward air flow, an oil sump at the bottom of said air cleaner across which the air flows, an annular filter through which the air flows upwardly and a axial conduit connected to the carburetor through which the air flows downwardly from the filter.
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |