US3292690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchangers
Assignee: Borg Warner Corp
•
Filing: 1965-03-22
•
Granted: 1966-12-20
•
Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Desmond M Donaldson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:22
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/03; F28D1/0308; F28D1/0325; F28D1/0333; F28D1/0391; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/464; Y10S165/465
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A HEAT EXCHANGER COMPRISING A PLURALITY OF ELONGATED ELEMENTS HAVING END PORTIONS AND SIDE PORTIONS ARRANGED FACE TO FACE IN PAIRS TO FORMS AT LEAST ONE HEADER PORTION AND AT LEAST ONE TUBE PORTION IN FLUID COMMUNICATION WITH AND EXTENDING FROM SAID HEADER PORTION WITH ELEMENTS OF ADJACENT PAIRS ARRANGED BACK TO BACK TO FORM A CONTINUOUS PASSAGE FROM THE HEADER PORTION OF ONE PAIR OF THE HEADER PORTION OF THE ADJACENT PAIR, TIE MEANS INTEGRAL WITH AND EXTENDING BETWEEN EACH OF SAID ELONGATED ELEMENTS IN SAID PAIRS AND TIE MEANS INTEGRAL WITH SAID ELONGATED ELEMENTS AND EXTENDING BETWEEN ADJACENT PAIRS.
Claim 2
Dependent Claim
101 words
A HEAT EXCHANGER COMPRISING A PLURALITY OF ELONGATED ELEMENTS HAVING END PORTIONS AND SIDE PORTIONS ARRANGED FACE TO FACE IN PAIRS TO FORMS AT LEAST ONE HEADER PORTION AND AT LEAST ONE TUBE PORTION IN FLUID COMMUNICATION WITH AND EXTENDING FROM SAID HEADER PORTION WITH ELEMENTS OF ADJACENT PAIRS ARRANGED BACK TO BACK TO FORM A CONTINUOUS PASSAGE FROM THE HEADER PORTION OF ONE PAIR OF THE HEADER PORTION OF THE ADJACENT PAIR, TIE MEANS INTEGRAL WITH AND EXTENDING BETWEEN EACH OF SAID ELONGATED ELEMENTS IN SAID PAIRS AND TIE MEANS INTEGRAL WITH SAID ELONGATED ELEMENTS AND EXTENDING BETWEEN ADJACENT PAIRS.
References Cited (Backward Citations)
GB113651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |