US3108362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making tubular heat exchanger
Assignee: Individual
•
Filing: 1958-10-02
•
Granted: 1963-10-29
•
Expires: 1978-10-02
Abstract
No abstract record available.
Inventors
- 👤 Huet Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/28; B21C37/29; B21C37/298; F; F28; F28F; F28F9/00; F28F9/02; F28F9/0243; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49389; Y10T29/49391
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS FOR PROVIDING INTEGRAL UNIONS IN THE WALL OF A HEADER WHICH ARE OTHER THAN PREPENDICULAR TO THE AXIS OF SAID HEADER, COMPRISING THE STEPS OF SHAPING THE MATERIAL OF THE WALL OF THE HEADER BY THE APPLICATION OF FORCE IN A DIRECTION PREPENDICULAR TO THE AXIS OF THE HEADER TO FORM AN UNSYMMETRICAL BLANK FOR THE UNION HAVING AN UNSYMMETRICAL OUTWARDLY-EXTENDING PORTION TO DEFINE THE WALL OF SAID UNION, AND SURROUNDING A CENTRAL APERTURE, AND SHAPING SAID BLANK BY ACTING UPON SAID OUTWARDLYEXTENDING PORTION WITH PUNCHES AND DIES MOVING IN A DIRECTION OTHER THAN A DIRECTION PREPENDICULAR TO THE AXIS OF THE HEADER TO FORM SAID PORTION INTO A UNION HAVING AN AXIS WHICH IS OTHER THAN PREPENDICULAR TO THE WALL OF THE HEADER.
Claim 2
Dependent Claim
126 words
A PROCESS FOR PROVIDING INTEGRAL UNIONS IN THE WALL OF A HEADER WHICH ARE OTHER THAN PREPENDICULAR TO THE AXIS OF SAID HEADER, COMPRISING THE STEPS OF SHAPING THE MATERIAL OF THE WALL OF THE HEADER BY THE APPLICATION OF FORCE IN A DIRECTION PREPENDICULAR TO THE AXIS OF THE HEADER TO FORM AN UNSYMMETRICAL BLANK FOR THE UNION HAVING AN UNSYMMETRICAL OUTWARDLY-EXTENDING PORTION TO DEFINE THE WALL OF SAID UNION, AND SURROUNDING A CENTRAL APERTURE, AND SHAPING SAID BLANK BY ACTING UPON SAID OUTWARDLYEXTENDING PORTION WITH PUNCHES AND DIES MOVING IN A DIRECTION OTHER THAN A DIRECTION PREPENDICULAR TO THE AXIS OF THE HEADER TO FORM SAID PORTION INTO A UNION HAVING AN AXIS WHICH IS OTHER THAN PREPENDICULAR TO THE WALL OF THE HEADER.
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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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |