US3747347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pollution preventing exhaust device
Assignee: Individual
•
Filing: 1971-04-12
•
Granted: 1973-07-24
•
Expires: 1991-04-12
Abstract
Abstract A muffler-separator connected to the exhaust pipe of an engine includes a tubular elongated casing divided into chambers by baffles extended alternately from opposite walls of the casing leaving a space at the free edge of each baffle for the passage of products of combustion from chamber to chamber; the baffles are parallel and are inclined toward the intake end of the casing; the volume of the chamber at the intake end is about three times the combined volume of all the combustion chambers of the engine; the volume in each intermediate chamber is about the same as that of a single combustion chamber in the engine; the volume of the chambers nearer the exhaust end of the casing increases gradually; a trap underneath the casing collects trapped moisture which can be reintroduced into the engine.
Inventors
- 👤 S Ciraolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:00
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/083; F01N3/00; F01N3/005; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
245 words
In a pollution preventing device for engines, a closed tubular casing having a closed inlet end and a closed outlet end, said inlet end having an inlet connected to the exhaust of the engine, said outlet end having an outlet, a plurality of spaced baffles along said casing between said ends having their edges secured alternately to opposite wall portions of said casing and having unsecured edges spaced from the side of said casing thereby to provide passages alternately on opposite sides of said casing for changing the direction of flow of fumes several times between said inset and outlet end, The spacing between the first baffle and said inlet end being the largest, the spacing between the intermediate baffles being about equal and substantially less than the spacing of the first baffle from the inlet end, the secured edges of each baffle being imperforate thereby to limit the passage of fumes to the space at the unsecured edge of each baffle, said baffles being parallel and being inclined lengthwise in said casing in the same direction, said first baffle being inclined with its unsecured edge toward said inlet end, and said unsecured edges of the baffles overlapping the positions of the unsecured edges of the adjacent alternate baffles, a closed space along the lowest portion of said casing for collecting escaped liquid, said casing having apertures in said lower portion between said baffles for the escape of precipitated liquid particles into said closed space.
Claim 2
Dependent Claim
245 words
In a pollution preventing device for engines, a closed tubular casing having a closed inlet end and a closed outlet end, said inlet end having an inlet connected to the exhaust of the engine, said outlet end having an outlet, a plurality of spaced baffles along said casing between said ends having their edges secured alternately to opposite wall portions of said casing and having unsecured edges spaced from the side of said casing thereby to provide passages alternately on opposite sides of said casing for changing the direction of flow of fumes several times between said inset and outlet end, The spacing between the first baffle and said inlet end being the largest, the spacing between the intermediate baffles being about equal and substantially less than the spacing of the first baffle from the inlet end, the secured edges of each baffle being imperforate thereby to limit the passage of fumes to the space at the unsecured edge of each baffle, said baffles being parallel and being inclined lengthwise in said casing in the same direction, said first baffle being inclined with its unsecured edge toward said inlet end, and said unsecured edges of the baffles overlapping the positions of the unsecured edges of the adjacent alternate baffles, a closed space along the lowest portion of said casing for collecting escaped liquid, said casing having apertures in said lower portion between said baffles for the escape of precipitated liquid particles into said closed space.
Claim 3
Dependent Claim
31 words
The invention specified in claim 1, and the spacing between the last baffle and said outlet end being about the same as the spacing of the first baffle from said inlet.
Claim 4
Dependent Claim
30 words
The invention specified in claim 2, and an inlet conduit through said inlet turned away from the passage at said first baffle for directing flow away from the first passage.
Claim 5
Dependent Claim
22 words
The invention specified in claim 3, and said outlet through said outlet end being offset from the passage at said last baffle.
Claim 6
Dependent Claim
66 words
The invention specified in claim 1, and said engine having several cylinders of about equal volume of displacement, said spacing of said first baffle from said inlet end forming a chamber of a volume about equal to the total volume of displacement in said engine, and each of said spacings between said intermediate baffles being about equal to the displacment in one cylinder of said engine.
Claim 7
Dependent Claim
33 words
The invention defined in claim 3, and the passage of said inlet conduit being considerable smaller than the cross-sectional area of said first spacing thereby to cause expansion of the fumes flowing therethrough.
Claim 8
Dependent Claim
40 words
The invention defined in claim 1, and said casing having apertures in its bottom wall between said baffles for the escape of collected liquid particles, and a closed pan on said casing along said apertures for collecting said escaped liquid.
References Cited (Backward Citations)
US911969A
Cited
GB190914923A
Cited
US1415418A
Cited
US1804070A
Cited
US2087411A
Cited
US2115228A
Cited
US3421315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |