US3196905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system
Assignee: Walker Manufacturing Co
•
Filing: 1962-11-06
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Granted: 1965-07-27
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Expires: 1982-11-06
Abstract
No abstract record available.
Inventors
- 👤 Hills Bert Atley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:18
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N2450/00; F01N2450/20; F01N2470/00; F01N2470/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A LAMINATED PIPE ASSEMBLY FOR AUTOMOBILE EXHAUST SYSTEMS SUBJECT TO HIGH TEMPERATURE CONDITION AND HAVING OIL FILMS THEREON SUSCEPTIBLE TO VAPORIZATION AT THE HIGH TEMPERATURE CONDITIONS TO FORM GASES, SAID PIPE ASSEMBLY BEING FORMED FROM TELESCOPED PIPE MEMBERS AND HAVING COMMON FLANGE MEANS FORMED AT ONE END, SAID FLANGE MEANS BEING FORMED BY RADIALLY EXTENDING PORTIONS OF EACH PIPE LYING SUBSTANTIALLY BACK-TO-BACK IN CLOSELY SPACED RELATIONSHIP, AND BREATHING PASSAGE MEANS EXTENDING FROM THE INTERIOR LOCATED SPACED BETWEEN SAID TELESCOPED PIPE MEMBERS AROUND THE BEND FORMING SAID FLANGE MEANS AND RADIALLY OUTWARDLY TO THE ATMOSPHERE.
Claim 2
Dependent Claim
94 words
A LAMINATED PIPE ASSEMBLY FOR AUTOMOBILE EXHAUST SYSTEMS SUBJECT TO HIGH TEMPERATURE CONDITION AND HAVING OIL FILMS THEREON SUSCEPTIBLE TO VAPORIZATION AT THE HIGH TEMPERATURE CONDITIONS TO FORM GASES, SAID PIPE ASSEMBLY BEING FORMED FROM TELESCOPED PIPE MEMBERS AND HAVING COMMON FLANGE MEANS FORMED AT ONE END, SAID FLANGE MEANS BEING FORMED BY RADIALLY EXTENDING PORTIONS OF EACH PIPE LYING SUBSTANTIALLY BACK-TO-BACK IN CLOSELY SPACED RELATIONSHIP, AND BREATHING PASSAGE MEANS EXTENDING FROM THE INTERIOR LOCATED SPACED BETWEEN SAID TELESCOPED PIPE MEMBERS AROUND THE BEND FORMING SAID FLANGE MEANS AND RADIALLY OUTWARDLY TO THE ATMOSPHERE.
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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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |