US3757892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust unit for combustion engine
Assignee: Skyway Machine Inc
•
Filing: 1972-04-03
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Granted: 1973-09-11
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Expires: 1992-04-03
Abstract
Abstract As disclosed, a modular arrester unit is fixed into a housing and includes a conical screen supported so that the exterior surface receives an exhaust stream, thereby passing a major part of the stream, but deflecting particles into an annular space which also receives a fragment of the stream through a vane structure to create turbulence. A cylindrical screen internally bounds the cylindrical space and passes the stream fragment back to the major stream. The housing additionally supports a silencer or muffler section downstream from the modular arrester unit.
Inventors
- 👤 C Raudman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:39
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/037; F01N1/00; F01N1/08; F01N1/10; F01N3/06; F01N2230/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
115 words
An exhaust unit for an engine comprising: a housing adapted to be connected to receive an exhaust stream from said engine including gas and particles; a screen defining an internal passage therethrough fixed in said housing to further define a space between said screen and said housing; separation means affixed in said housing for deflecting said particles and a fragment of said stream to said space between said screen and said housing while passing another fragment of said stream through said internal passage of said screen; and means for providing turbulence in said space between said screen and said housing for moving said particles as to be drawn through said screen into said internal passage.
Claim 2
Dependent Claim
115 words
An exhaust unit for an engine comprising: a housing adapted to be connected to receive an exhaust stream from said engine including gas and particles; a screen defining an internal passage therethrough fixed in said housing to further define a space between said screen and said housing; separation means affixed in said housing for deflecting said particles and a fragment of said stream to said space between said screen and said housing while passing another fragment of said stream through said internal passage of said screen; and means for providing turbulence in said space between said screen and said housing for moving said particles as to be drawn through said screen into said internal passage.
Claim 3
Dependent Claim
27 words
An exhaust unit according to claim 1 wherein said separator means comprises a concave-convex screen fixed in said housing to receive said stream at the convex side.
Claim 4
Dependent Claim
41 words
An exhaust unit according to claim 1 wherein said means for providing turbulence comprises a stream vane means for directing said fragment of said stream to move in a pattern circumferentially about the path of the other fragment of said stream.
Claim 5
Dependent Claim
33 words
An exhaust unit according to claim 1 further including a muffler pack comprising a metal core defining louvered passages and a cushion pack supporting said core in said housing to receive said stream.
Claim 6
Dependent Claim
58 words
An exhaust unit according to claim 1 wherein said separator means includes a conical screen member for deflecting said particles radially into said space between said screen and said housing, and wherein said means for providing turbulence comprises vane means for imparting a Flow pattern to said fragment of said stream that extends circumferentially about said internal passage.
Claim 7
Dependent Claim
24 words
An exhaust unit according to claim 5 further including a muffler core affixed in said housing to receive the flow from said internal passage.
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |