US3276108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a muffler
Assignee: Reynolds Metals Co
•
Filing: 1964-02-21
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Granted: 1966-10-04
•
Expires: 1984-02-21
Abstract
No abstract record available.
Inventors
- 👤 White Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:41
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; B; B21; B21D; B21D53/00; B21D53/88; F01N1/00; F01N1/08; F01N2450/00; F01N2450/20; F01N2470/00; F01N2470/02; F01N2470/24; F01N2530/00; F01N2530/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49398; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD OF MANUFACTURING A MUFFLER COMPRISING THE STEPS OF FORMING A LAMINATED SHEET MATERIAL HAVING BONDED AND UNBONDED AREAS AND FURTHER HAVING LONGITUDINALLY EXTENDING MARGINAL PORTIONS, INFLATING THE UNBONDED AREAS TO FORM PASSAGEWAYS WHICH EXTEND LONGITUDINALLY ALONG THE LAMINATED SHEET, PROVIDING A PLURALITY OF APERTURES THROUGH THE LAMINATED SHEET ALONG THE PASSAGEWAYS, FORMED BY INGLATING THE UNBONDED AREAS OF SAID LAMINATED SHEET, BENDING SAID LAMINATED SHEET TO FORM A LONGITUDINAL SEAM AT THE LONGITUDINALLY EXTENDING MARGINAL PORTIONS OF SAID LAMINATED SHEET, AND CONNECTING INLET AND EXHAUST PIPES TO OPPOSITE ENDS OF SAID BENT LAMINATED SHEET.
Claim 2
Independent Claim
96 words
A METHOD OF MANUFACTURING A MUFFLER COMPRISING THE STEPS OF FORMING A LAMINATED SHEET MATERIAL HAVING BONDED AND UNBONDED AREAS AND FURTHER HAVING LONGITUDINALLY EXTENDING MARGINAL PORTIONS, INFLATING THE UNBONDED AREAS TO FORM PASSAGEWAYS WHICH EXTEND LONGITUDINALLY ALONG THE LAMINATED SHEET, PROVIDING A PLURALITY OF APERTURES THROUGH THE LAMINATED SHEET ALONG THE PASSAGEWAYS, FORMED BY INGLATING THE UNBONDED AREAS OF SAID LAMINATED SHEET, BENDING SAID LAMINATED SHEET TO FORM A LONGITUDINAL SEAM AT THE LONGITUDINALLY EXTENDING MARGINAL PORTIONS OF SAID LAMINATED SHEET, AND CONNECTING INLET AND EXHAUST PIPES TO OPPOSITE ENDS OF SAID BENT LAMINATED SHEET.
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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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |