Patent US3827531A successfully refreshed from Google Patents.
US3827531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust muffler
Assignee: Nelson Muffler Corp
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Filing: 1973-08-17
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Granted: 1974-08-06
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Expires: 1993-08-17
Abstract
Abstract The present invention relates generally to exhaust mufflers and more particularly to the improvements in exhaust mufflers for use with internal combustion engines. The exhaust muffler disclosed herein comprises an elongate muffler housing and a plurality of conduits disposed in substantial parallelism with the longitudinal axis of the housing. Inlet and outlet conduits are each supported at one extremity within the end wall or closure of the housing and additional conduits are telescopically associated with said inlet and outlet conduits. These telescopically associated conduits are supported by flange means within the housing so as to present the elongate annular passages opening at opposite extremities into said housing, said telescopically associated conduits being peripherally joined so as to enhance lateral rigidity thereof within the housing.
Inventors
- 👤 J Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:24
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N1/00; F01N1/08; F01N1/084; F01N2450/00; F01N2450/22; F01N2490/00; F01N2490/02; F01N2490/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
225 words
An exhaust muffler including an elongate muffler housing, first end closure means traversing one extremity of said housing, second end closure means traversing the opposite extremity of said housing, open ended elongate inlet conduit means extending through and supported at one extremity by said first end closure means in substantial parallelism with the longitudinal axis of said housing, first transverse flange means within said housing and supporting the opposite open extremity of said inlet conduit means, open ended elongate outlet conduit means extending through and supported at one extremity by said second end closure means in substantial parallelism with the longitudinal axis of said housing, second transverse flange means within said housing for supporting the opposite open extremity of said outlet conduit means, open ended conduit means telescopically associated with said inlet conduit means and secured at one extremity to said second flange means, so as to present an elongate annular passage opening at opposite extremities within said housing, open ended conduit means telescopically associated with said outlet conduit means and supported at one extremity by said first flange means, so as to present an elongate annular passage opening at opposite extremities into said housing, the conduit means surrounding said inlet conduit means and the conduit means surrounding said outlet conduit means being peripherally joined so as to enhance lateral rigidity thereof within said housing.
Claim 2
Dependent Claim
225 words
An exhaust muffler including an elongate muffler housing, first end closure means traversing one extremity of said housing, second end closure means traversing the opposite extremity of said housing, open ended elongate inlet conduit means extending through and supported at one extremity by said first end closure means in substantial parallelism with the longitudinal axis of said housing, first transverse flange means within said housing and supporting the opposite open extremity of said inlet conduit means, open ended elongate outlet conduit means extending through and supported at one extremity by said second end closure means in substantial parallelism with the longitudinal axis of said housing, second transverse flange means within said housing for supporting the opposite open extremity of said outlet conduit means, open ended conduit means telescopically associated with said inlet conduit means and secured at one extremity to said second flange means, so as to present an elongate annular passage opening at opposite extremities within said housing, open ended conduit means telescopically associated with said outlet conduit means and supported at one extremity by said first flange means, so as to present an elongate annular passage opening at opposite extremities into said housing, the conduit means surrounding said inlet conduit means and the conduit means surrounding said outlet conduit means being peripherally joined so as to enhance lateral rigidity thereof within said housing.
Claim 3
Dependent Claim
28 words
An exhaust muffler as set forth in claim 1, wherein said transverse flange means and said end closure means serve to divide said housing into three discreet chambers.
Claim 4
Dependent Claim
64 words
An exhaust muffler as set forth in claim 1, wherein said first flange means is spaced axially from said second end closure means to provide a chamber therebetween, and said second flange means is spaced axially from said first end closure means to provide a chamber therebetween, said first and second flange means being spaced axially from each other to provide a chamber therebetween.
Claim 5
Dependent Claim
36 words
An exhaust muffler as set forth in claim 1, wherein said conduit means surrounding said inlet conduit means and the conduit means surrounding said outlet conduit means are peripherally secured to each other by a weld.
Claim 6
Dependent Claim
18 words
An exhaust muffler as set forth in claim 1, wherein said housing is of general elliptical cross section.
Claim 7
Dependent Claim
38 words
An exhaust muffler as set forth in claim 5, wherein the first and second end closure means and said first and second flange means are generally elliptical in general conformity with the elliptical cross section of said housing.
Claim 8
Dependent Claim
58 words
An exhaust muffler as set forth in claim 3, wherein the conduit means telescopically associated with each of said outlet and inlet conduit means is so positioned that one extremity communicates with the chamber between said first and second flange means and the opposite extremities communicate with chambers positioned between said flange means and said end closure means.
Claim 9
Dependent Claim
55 words
An exhaust muffler as set forth in claim 3, wherein the inlet conduit means communicates with the chamber defined between said first flange means and said second end closure means and wherein one extremity of said outlet conduit means communicates with the chamber defined between said first flange means and said second end closure means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |