US3083662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger and method of making same
Assignee: Borg Warner Corp
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Filing: 1957-07-19
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Granted: 1963-04-02
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Expires: 1977-07-19
Abstract
No abstract record available.
Inventors
- 👤 Reinhold C Zeidler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:21
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/496; Y10T428/00; Y10T428/12; Y10T428/12361; Y10T428/1241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD FOR FORMING A TURBULIZER FOR A HEAT EXCHANGER COMPRISING THE STEPS OF SLITTING A CONTINUOUS RIBBON OF FLAT STOCK TO FORM A PLURALITY OF LONGITUDINALLY SPACED TRANSVERSELY EXTENDING GROUPS OF CONTIGUOUS STRIPS, CORRUGATING THE SAID GROUPS OF STRIPS TO FASHION A PERFORM HAVING A PLURALITY OF LONGITUDINALLY SPACED GROUPS OF CORRUGATIONS, REFORMING SAID CORRUGATIONS TO FORM ALTERNATE SERIES OF CORRUGATIONS OFFSET LONGITUDINALLY FROM EACH OTHER, SHAPING SAID STOCK ABOUT AN AXIS PARALLEL TO SAID STRIPS SO THAT IT ASSUMES AN ARCUATE CONFIGURATION AND SEVERING SAID STOCK TO THE REQUIRED LENGTH.
Claim 2
Independent Claim
92 words
A METHOD FOR FORMING A TURBULIZER FOR A HEAT EXCHANGER COMPRISING THE STEPS OF SLITTING A CONTINUOUS RIBBON OF FLAT STOCK TO FORM A PLURALITY OF LONGITUDINALLY SPACED TRANSVERSELY EXTENDING GROUPS OF CONTIGUOUS STRIPS, CORRUGATING THE SAID GROUPS OF STRIPS TO FASHION A PERFORM HAVING A PLURALITY OF LONGITUDINALLY SPACED GROUPS OF CORRUGATIONS, REFORMING SAID CORRUGATIONS TO FORM ALTERNATE SERIES OF CORRUGATIONS OFFSET LONGITUDINALLY FROM EACH OTHER, SHAPING SAID STOCK ABOUT AN AXIS PARALLEL TO SAID STRIPS SO THAT IT ASSUMES AN ARCUATE CONFIGURATION AND SEVERING SAID STOCK TO THE REQUIRED LENGTH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |