US4456091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer in stainless material for exhaust systems of automobile vehicles
Assignee: INDUSTELER A FRENCH Co
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Filing: 1982-01-25
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Granted: 1984-06-26
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Expires: 2002-01-25
Abstract
Abstract The silencer in stainless material for exhaust systems of automobile vehicles is made of two shells with crimped flanges. The bottom portion of the two shells have transverse corrugations on which rest the arcuate bottoms of holder elements of a box shape the vertical wings of which terminate by corrugated edges into which enter semi-circular corrugations of conformed plates. The two shells, the holder elements and the conformed plates are maintained in place by the crimped edges.
Inventors
- 👤 Pierre Blanchot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:19
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1872; F01N13/009; F01N13/0097; F01N13/16; F01N13/1838; F01N13/1844; F01N13/185; F01N13/1888; F01N2470/00; F01N2470/02; F01N2470/06; F01N2510/00; F01N2510/08; F01N2530/00; F01N2530/02; F01N2530/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
A silencer for the exhaust systems of automotive vehicles and the like, said silencer consisting essentially entirely of stainless steel, said silencer comprising an assembly of a pair of formed plates, a pair of shells, and a plurality of holder elements, said holder elements having a box-like cross-sectional shape having a bottom portion and a pair of wing portions extending therefrom, said shells being formed with transverse corrugation means each adapted to receive a bottom portion of one of said holder elements, the ends of said wing portions being formed to receive mating portions of said formed plates, and said shells being formed with edge flanges adapted to be crimped together to thereby secure said assembly of said holder elements, said formed plates and said shells together.
Claim 2
Dependent Claim
127 words
A silencer for the exhaust systems of automotive vehicles and the like, said silencer consisting essentially entirely of stainless steel, said silencer comprising an assembly of a pair of formed plates, a pair of shells, and a plurality of holder elements, said holder elements having a box-like cross-sectional shape having a bottom portion and a pair of wing portions extending therefrom, said shells being formed with transverse corrugation means each adapted to receive a bottom portion of one of said holder elements, the ends of said wing portions being formed to receive mating portions of said formed plates, and said shells being formed with edge flanges adapted to be crimped together to thereby secure said assembly of said holder elements, said formed plates and said shells together.
Claim 3
Dependent Claim
74 words
The silencer of claim 1, said formed plates having portions which define exhaust gas conduit means in the assembled together condition of said silencer, said conduit means defining portions of said formed plates being formed with openings which communicate the space within said conduit means with the space within said shells in the assembled together condition of said silencer, and said conduit means defining portions in each said formed plate being of semi-circular configuration.
Claim 4
Dependent Claim
23 words
The silencer of claim 1 or 2, wherein said formed plates are formed with holes in the areas thereof between said holder elements.
Claim 5
Dependent Claim
38 words
The silencer of claim 1 or 2, wherein said holder elements are held in place between said shells and said formed plates in the assembled together condition of said silencer by said crimped edges and without any soldering.
References Cited (Backward Citations)
US3638756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |