US3249155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate-type heat exchanger
Assignee: Individual
•
Filing: 1963-02-18
•
Granted: 1966-05-03
•
Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 Huet Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:15
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; F28D; F28D9/00; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PLATE-TYPE HEAT EXCHANGER COMPRISING A HOUSING, A PLURALITY OF SPACED PLATES ARRANGED IN SAID HOUSING AND DEFINING PASSAGES BETWEEN ADJACENT PAIRS OF SAID PLATES, ALTERNATE ONES OF SAID PASSAGES CONSTITUTING FIRST FLUID-FLOW PASSAGES AND THE INTERVENING PASSAGES CONSTITUTING SECOND FLUID-FLOW PASSAGES, A FIRST FLUID INLET IN SAID HOUSING IN COMMUNICATION WITH ONE END OF EACH OF SAID FIRST PASSAGES, A FIRST FLUID OUTLET IN SAID HOUSING IN COMMUNICATION WITH THE OTHER END OF EACH OF SAID FIRST PASSAGES, A SECOND FLUID INLET IN SAID HOUSING IN COMMUNICATION WITH ONE END OF EACH OF SAID SECOND PASSAGES, A SECOND FLUID OUTLET IN SAID HOUSING IN COMMUNICATION WITH THE OTHER END OF EACH OF SAID SECOND PASSAGES, AND A PLURALITY OF CLOSELY ADJACENT SMALL GROOVES WITH INTERVENING RIDGES PROVIDED IN BOTH OF THE OPPOSING SURFACES OF EACH PAIR OF PLATES DEFINING EACH OF SAID FIRST-FLUID-FLOW PASSAGES TO PRO-
Claim 2
Dependent Claim
147 words
A PLATE-TYPE HEAT EXCHANGER COMPRISING A HOUSING, A PLURALITY OF SPACED PLATES ARRANGED IN SAID HOUSING AND DEFINING PASSAGES BETWEEN ADJACENT PAIRS OF SAID PLATES, ALTERNATE ONES OF SAID PASSAGES CONSTITUTING FIRST FLUID-FLOW PASSAGES AND THE INTERVENING PASSAGES CONSTITUTING SECOND FLUID-FLOW PASSAGES, A FIRST FLUID INLET IN SAID HOUSING IN COMMUNICATION WITH ONE END OF EACH OF SAID FIRST PASSAGES, A FIRST FLUID OUTLET IN SAID HOUSING IN COMMUNICATION WITH THE OTHER END OF EACH OF SAID FIRST PASSAGES, A SECOND FLUID INLET IN SAID HOUSING IN COMMUNICATION WITH ONE END OF EACH OF SAID SECOND PASSAGES, A SECOND FLUID OUTLET IN SAID HOUSING IN COMMUNICATION WITH THE OTHER END OF EACH OF SAID SECOND PASSAGES, AND A PLURALITY OF CLOSELY ADJACENT SMALL GROOVES WITH INTERVENING RIDGES PROVIDED IN BOTH OF THE OPPOSING SURFACES OF EACH PAIR OF PLATES DEFINING EACH OF SAID FIRST-FLUID-FLOW PASSAGES TO PRO-
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |