US3557903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler having mechanical connection of tube to partition
Assignee: Tenneco Inc
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Filing: 1967-09-26
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Granted: 1971-01-26
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Expires: 1987-09-26
Abstract
Abstract A mechanical connection of a gas flow tube to a partition in lieu of spot welding is provided by means of angularly spaced projections, preferably louvers, which engage one side of a muffler partition and deformed nibs on an end of the tube engaging the end of an annular neck on the partition.
Inventors
- 👤 Eldred G Straw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:26
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N13/185; B; B21; B21D; B21D39/00; B21D39/06; B21D53/00; B21D53/88; F01N2450/00; F01N2450/20; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
179 words
A muffler for silencing sound in flowing gases comprising a housing, a partition secured in the housing having an annular neck extending at substantially right angles to the plane of the partition and defining an opening, a gas flow tube in the housing extending through said neck opening and supported in said neck, means for mechanically clamping the end of said tube to said partition in said neck comprising a first set of radially outwardly extending ramplike projection members formed in the tube and including at their points of maximum radius the butt end of the tube, and a second set of radially outwardly extending projection members formed in the tube and spaced from the first set by substantially the length of said neck, one set of said projection members engaging the butt end of the neck and the other engaging the partition on the side thereof opposite the butt end of the neck, said ramplike projection members compressing said neck and partition against said second set projection members to tightly clamp said tube in position in said neck.
Claim 2
Dependent Claim
179 words
A muffler for silencing sound in flowing gases comprising a housing, a partition secured in the housing having an annular neck extending at substantially right angles to the plane of the partition and defining an opening, a gas flow tube in the housing extending through said neck opening and supported in said neck, means for mechanically clamping the end of said tube to said partition in said neck comprising a first set of radially outwardly extending ramplike projection members formed in the tube and including at their points of maximum radius the butt end of the tube, and a second set of radially outwardly extending projection members formed in the tube and spaced from the first set by substantially the length of said neck, one set of said projection members engaging the butt end of the neck and the other engaging the partition on the side thereof opposite the butt end of the neck, said ramplike projection members compressing said neck and partition against said second set projection members to tightly clamp said tube in position in said neck.
Claim 3
Dependent Claim
21 words
A muffler as set forth in claim 1 wherein said ramplike projection members engage the butt end of said partition neck.
Claim 4
Dependent Claim
20 words
A muffler as set forth in claim 2 wherein said second set of projection members are louvers in the tube.
Claim 5
Dependent Claim
20 words
A muffler as set forth in claim 1 wherein said second set of projection members are louvers in the tube.
Claim 6
Independent Claim
128 words
The method of making a muffler which comprises forming a partition with an annular neck and a gas flow tube with radial outwardly extending projections spaced from one end thereof, inserting the tube through the neck so that the projections engage the partition on the side opposite the neck, inserting a tool in the end of the tube and deforming the end of the tube radially outwardly without shearing it so that at least a portion of the tube engages the butt end of the neck, applying axial force to said deformed portion to tightly clamp the partition against the projections, inserting the partition and attached flow tube inside of a muffler shell and spot welding the partition to the shell, and closing the ends of the shell.
Claim 7
Independent Claim
128 words
The method of making a muffler which comprises forming a partition with an annular neck and a gas flow tube with radial outwardly extending projections spaced from one end thereof, inserting the tube through the neck so that the projections engage the partition on the side opposite the neck, inserting a tool in the end of the tube and deforming the end of the tube radially outwardly without shearing it so that at least a portion of the tube engages the butt end of the neck, applying axial force to said deformed portion to tightly clamp the partition against the projections, inserting the partition and attached flow tube inside of a muffler shell and spot welding the partition to the shell, and closing the ends of the shell.
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |