US3307622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Round tank heat exchanger
Assignee: Borg Warner Corp
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Filing: 1964-12-30
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Granted: 1967-03-07
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Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Edward P Oddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:35
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0243; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/0535; F28F9/001; F28D21/00; F28D2021/0019; F28D2021/008; F28D2021/0091; F28D2021/0094; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/471; Y10S165/485
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
AN AUTOMOTIVE TYPE HEAT EXCHANGER COMPRISING: A CORE INCLUDING A PLURALITY OF COOLANT TUBES; FLOW DISTRIBUTION HEADERS DISPOSED AT OPPOSITE ENDS OF SAID CORE IN FLUID COMMUNICATION WITH SAID TUBES, AT LEAST ONE OF SAID HEADERS INCLUDING A PAIR OF ELONGATED DEEP DRAWN LONGITUDINALLY SEAMLESS HOLLOW BODY TANKS HAVING AN INTEGRALLY FORMED CLOSED END AND AN OPEN END INCLUDING AN OUTWARDLY DIRECTED FLANGE, SAID TANKS BEING DISPOSED WITH SAID FLANGES IN ABUTTING RELATION AND SECURED TOGETHER IN LIQUID TIGHT RELATION TO FORM SAID HEADER AND DEFINING A CHAMBER IN FLUID COMMUNICATION WITH EACH OF SAID COOLANT TUBES.
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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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |