Patent DE36015C successfully refreshed from Google Patents.
Patent US3590946A successfully refreshed from Google Patents.
US3590946A
Expired / Lapsed
US
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Exhaust system
Assignee: MINI FOLD SCOOTER CO Inc
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Filing: 1969-12-03
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Granted: 1971-07-06
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Expires: 1989-12-03
Abstract
Abstract An elongate core member is disclosed defining indentations therein which afford a fluted interior passage, the walls of the indentations being relatively thin at times defining openings therethrough. The core member is disclosed in a folded configuration enclosed by a housing with a cushioned lining pad separating the core member from the housing. A screen is positioned in the duct which is partially defined by the core, to assure the passage of only particles of minimum size.
Inventors
- 👤 Emmet J Corn Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:56
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N1/00; F01N1/08; F01N1/084; F01N1/10; F01N13/009; F01N13/0097; F01N3/00; F01N3/06; F01N2230/00; F01N2230/06; F01N2310/00; F01N2310/02; F01N2450/00; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/10; F01N2490/00; F01N2490/02; F01N2490/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
107 words
An exhaust system for an engine, comprising: an elongate metal core member defining a fluted passage to receive exhaust from said engine, said core member defining a folded elongate tube of substantially uniform cross-sectional area, perforated by arcuate gaps transversely defined in the walls thereof and transversely bridged by integral straps of a thickness that is substantially less than the thickness of said tube; a metal housing enclosing said core member and defining an intake port and an exhaust port, said housing defining a space uniformly larger than said core member; and a lining pad of cushionlike material disposed between said core member and said metal housing.
Claim 2
Dependent Claim
107 words
An exhaust system for an engine, comprising: an elongate metal core member defining a fluted passage to receive exhaust from said engine, said core member defining a folded elongate tube of substantially uniform cross-sectional area, perforated by arcuate gaps transversely defined in the walls thereof and transversely bridged by integral straps of a thickness that is substantially less than the thickness of said tube; a metal housing enclosing said core member and defining an intake port and an exhaust port, said housing defining a space uniformly larger than said core member; and a lining pad of cushionlike material disposed between said core member and said metal housing.
Claim 3
Dependent Claim
39 words
An exhaust system according to claim 1 wherein said passage of said elongate metal core is offset from alignment with said intake port of said metal housing and wherein said metal core member is folded within a single plane.
Claim 4
Dependent Claim
23 words
An exhaust system according to claim 2 further including a screen member affixed in said housing to receive exhaust from said core member.
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |