US3563338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable muffler cartridge particularly adapted for a forwardly tapering exhaust pipe tip
Assignee: Individual
•
Filing: 1970-03-04
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Granted: 1971-02-16
•
Expires: 1990-03-04
Abstract
Abstract A removable muffler cartridge in combination with a forwardly tapering exhaust pipe tip which has a rearwardly facing V-shaped cross section sealing ring located at the forward end of the cartridge, said cartridge having an inner tube concentrically located within an outer tube to form a muffler chamber therebetween with muffler material therein, said inner tube having a plurality of holes therethrough communicating the muffler chamber with the interior of the inner tube and having a forwardly tapering rear section, said outer tube having a cylindrical front section and a cylindrical rear section which is substantially larger than said front section, said cartridge being provided with radially extending structure at its rear end to index the cartridge concentrically with the exhaust pipe tip, and being removably held in engagement with said V-shaped sealing ring by a bolt extending through the center of the cartridge.
Inventors
- 👤 Richard L Rader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:31
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N1/00; F01N1/24; F01N13/1844; F01N13/1855; F01N2260/00; F01N2260/18; F01N2450/00; F01N2450/22; F01N2450/24; F01N2450/26; F01N2450/30; F01N2470/00; F01N2470/02; F01N2470/06; F01N2470/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
196 words
In combination with an exhaust pipe having a generally tubular shape with a forward sealing ring and a rear indexing ring rearward of said forward sealing ring, said rear indexing ring being of a substantially larger diameter than said forward sealing ring: a muffler cartridge removably received in said exhaust pipe, said cartridge comprising: an inner tube and an outer tube with the inner tube concentrically received within the outer tube forming a muffler chamber therebetween, said inner tube having passages communicating the interior of the inner tube with the muffler chamber, said inner tube having a front inlet and a rear outlet, means fixing said inner tube in concentric relation with said outer tube and closing the front and rear ends of said muffler chamber, index means on said cartridge for engaging said rear indexing ring when the front end of said cartridge engages forward sealing ring, and mounting means removably connected between said exhaust pipe and said cartridge selectively holding said cartridge front end against said forward sealing ring, said mounting means selectively permitting said cartridge to be withdrawn out of said exhaust pipe said cartridge may be selectively removed from said exhaust pipe.
Claim 2
Dependent Claim
196 words
In combination with an exhaust pipe having a generally tubular shape with a forward sealing ring and a rear indexing ring rearward of said forward sealing ring, said rear indexing ring being of a substantially larger diameter than said forward sealing ring: a muffler cartridge removably received in said exhaust pipe, said cartridge comprising: an inner tube and an outer tube with the inner tube concentrically received within the outer tube forming a muffler chamber therebetween, said inner tube having passages communicating the interior of the inner tube with the muffler chamber, said inner tube having a front inlet and a rear outlet, means fixing said inner tube in concentric relation with said outer tube and closing the front and rear ends of said muffler chamber, index means on said cartridge for engaging said rear indexing ring when the front end of said cartridge engages forward sealing ring, and mounting means removably connected between said exhaust pipe and said cartridge selectively holding said cartridge front end against said forward sealing ring, said mounting means selectively permitting said cartridge to be withdrawn out of said exhaust pipe said cartridge may be selectively removed from said exhaust pipe.
Claim 3
Dependent Claim
113 words
The combination set forth in claim 1 wherein said mounting means includes: a rear spider extending across the rear outlet of the inner tube, said rear spider having a hole through the center thereof; a front spider extending across the exhaust pipe adjacent the front end of said cartridge, said front spider having thread means thereon adapted to removably receive the threaded portion of a bolt; and a bolt extending through said hole in the center of said rear spider and into the thread means of said front spider with the head of the bolt engaging the rear spider, whereby the bolt will hold the cartridge in operative position in said exhaust pipe.
Claim 4
Dependent Claim
40 words
The combination set forth in claim 1 wherein: one of said forward sealing ring and said front end of said cartridge has a V-shaped cross section receiving therein the other of said sealing ring and front end of said cartridge.
Claim 5
Dependent Claim
71 words
The combination set forth in claim 1 wherein said forward sealing ring comprises: a rearwardly facing annular ring having a V-shaped cross section and the front end of said cartridge engages the sealing ring in said V-shaped cross section, whereby the front end of said cartridge can seal with said sealing ring and the diameter of the front end of the cartridge as compared to the sealing ring is not critical.
Claim 6
Dependent Claim
54 words
The combination set forth in claim 1 wherein: said outer tube has a cylindrical forward section and a cylindrical rear section joined by a conical section; and said rear section being substantially the same amount larger in diameter than said forward section as said rear indexing ring is larger than said forward sealing ring.
Claim 7
Dependent Claim
32 words
The combination set forth in claim 1 wherein: said index means at the rear of said cartridge effectively seals the area between the exhaust pipe and the outer tube of the cartridge.
Claim 8
Dependent Claim
49 words
The combination set forth in claim 4 wherein: said outer tube front end projects forward of the front end of the inner tube and the means closing the front end of the muffler chamber, and said front end of said outer tube is received in said V-shaped sealing ring.
Claim 9
Dependent Claim
133 words
A muffler cartridge particularly adapted to be removably inserted in an exhaust pipe having a forwardly tapering bore, said cartridge comprising: an inner tube and an outer tube with the inner tube concentrically received within said outer tube forming a muffler chamber therebetween, said inner tube having therein passages communicating between the interior of said inner tube and said muffler chamber, said inner tube having a front inlet and a rear outlet, said outer tube having a cylindrical forward section and a cylindrical rear section with said rear section being substantially larger than said forward section; and index means on said cartridge for indexing said cartridge concentric with an exhaust pipe within which said cartridge is inserted, said index means including radially extending material adapted to engage the wall of the exhaust pipe.
Claim 10
Dependent Claim
133 words
A muffler cartridge particularly adapted to be removably inserted in an exhaust pipe having a forwardly tapering bore, said cartridge comprising: an inner tube and an outer tube with the inner tube concentrically received within said outer tube forming a muffler chamber therebetween, said inner tube having therein passages communicating between the interior of said inner tube and said muffler chamber, said inner tube having a front inlet and a rear outlet, said outer tube having a cylindrical forward section and a cylindrical rear section with said rear section being substantially larger than said forward section; and index means on said cartridge for indexing said cartridge concentric with an exhaust pipe within which said cartridge is inserted, said index means including radially extending material adapted to engage the wall of the exhaust pipe.
Claim 11
Dependent Claim
58 words
The invention set forth in claim 8 including: a spider extending across the rear exit of the interior tube, said spider having a hole therethrough at the axis of the inner tube and adapted to receive therethrough a bolt extending along the axis of the inner tube for purposes of selectively anchoring said cartridge in an exhaust pipe.
Claim 12
Dependent Claim
23 words
The invention set forth in claim 8 wherein said index means comprises: an annular flange extending around the circumference of said outer tube.
Claim 13
Dependent Claim
29 words
The invention set forth in claim 10 including: a tubular stiffener section around the outer edge of said flange, whereby said last mentioned tubular section stiffens said annular flange.
Claim 14
Dependent Claim
45 words
The invention set forth in claim 8 wherein said index means includes: resilient means fixed to said muffler cartridge and extending outwardly on all sides of the cartridge, said resilient means extending rearwardly At least part of its length as the resilient means extends outwardly.
Claim 15
Dependent Claim
24 words
The invention set forth in claim 8 wherein said index means comprises: a circumferential spring bent fixed to said cartridge and extending radially outward.
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |