US3149513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making laminated pipe
Assignee: Meritor Inc
•
Filing: 1960-06-13
•
Granted: 1964-09-22
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Expires: 1980-06-13
Abstract
No abstract record available.
Inventors
- 👤 James R Dollens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:48
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF MAKING LAMINATED METAL PIPE FOR TRANSFERRING AND REDUCING THE NOISE LEVEL OF THE EXHAUST GASES FROM AN AUTOMOBILE ENGINE, COMPRISING THE STEPS OF PLACING A PAIR OF METAL PIPES ONE INSIDE THE OTHER IN SUBSTANTIALLY COAXIAL ALIGNMENT, AND ROLLING SAID PIPES BETWEEN A SERIES OF COMPRESSION ROLLS TO COMPRESS THE OUTER PIPE AGAINST THE INNER PIPE TO REDUCE THE DIAMETERS OF THE PIPES SUFFICIENTLY TO CAUSE THE INNER PIPE TO EXERT AN EXPANSIVE FORCE OVER ITS ENTIRE CIRCUMFERENCE AGAINST THE OUTER PIPE AND DISPOSE THE ADJACENT FACES OF SAID PIPES OVER THEIR ENTIRE CIRCUMFERENCE IN TIGHT BEARING RELATIONSHIP WITHOUT EFFECTING A COLD WELD BETWEEN SAID ADJACENT FACES.
Claim 2
Independent Claim
110 words
A METHOD OF MAKING LAMINATED METAL PIPE FOR TRANSFERRING AND REDUCING THE NOISE LEVEL OF THE EXHAUST GASES FROM AN AUTOMOBILE ENGINE, COMPRISING THE STEPS OF PLACING A PAIR OF METAL PIPES ONE INSIDE THE OTHER IN SUBSTANTIALLY COAXIAL ALIGNMENT, AND ROLLING SAID PIPES BETWEEN A SERIES OF COMPRESSION ROLLS TO COMPRESS THE OUTER PIPE AGAINST THE INNER PIPE TO REDUCE THE DIAMETERS OF THE PIPES SUFFICIENTLY TO CAUSE THE INNER PIPE TO EXERT AN EXPANSIVE FORCE OVER ITS ENTIRE CIRCUMFERENCE AGAINST THE OUTER PIPE AND DISPOSE THE ADJACENT FACES OF SAID PIPES OVER THEIR ENTIRE CIRCUMFERENCE IN TIGHT BEARING RELATIONSHIP WITHOUT EFFECTING A COLD WELD BETWEEN SAID ADJACENT FACES.
References Cited (Backward Citations)
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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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |