US3372743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Pall Corp
•
Filing: 1967-01-25
•
Granted: 1968-03-12
•
Expires: 1987-01-25
Abstract
No abstract record available.
Inventors
- 👤 David B Pall
- 👤 Robert I Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:46
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/082; F28D; F28D9/00; F28D9/0025; F28F21/06; F28F21/065; F28F3/00; F28F3/02; F28F3/025; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/393; Y10S165/394
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A COUNTERFLOW OR PARALLEL FLOW HEAT EXCHANGER OF THE PLATE TYPE, COMPRISING, IN COMBINATION, A HOUSING; OPENINGS IN THE HOUHING FOR INFLOW AND OUTFLOW OF FLUIDES BETWEEN WHICH HEAT IS TO BE EXCHANGED; A HEAT EXCHANGER PLATE FORMED IN A PLURALITY OF CONVOLUTIONS ARRANGED IN JUXTAPOSED SPACED-APART RELATIONSHIP, AND HAVING A CORRUGATED SURFACE, THE CORRUGATIONS OF SAID SURFACE BEING SMALL RELATIVE TO THE CONVOLUTIONS OF THE PLATE AND BEING DISPOSED ACROSS SAID CONVOLUTIONS, THE HEAT EXCHANGER PLATE BEING DISPOSED IN THE HOUSING SUCH THAT THE ENDS OF THE CONVOLUTIONS DEFINE SEPARATE FLOW PATHS FOR THE FLUIDS BETWEEN WHICH HEAT IS TO BE EXCHANGED; AND A PLURALITY OF SEPARATORS DISPOSED BETWEEN THE CONVOLUTIONS OF THE HEAT EXCHANGER PLATE, AND HOLDING THE CONVOLUTIONS IN SUCH SPACED-APART RELATIONSHIP, THE SEPARATORS, CONVOLUTIONS AND CORRUGATIONS TOGETHER BEING SHAPED TO DEFINE A PLURALITY OF PASSAGES WHICH ARE INTERCONNECTED AT A PLURALITY OF POINTS ALONG THEIR LENGTH.
Claim 2
Dependent Claim
150 words
A COUNTERFLOW OR PARALLEL FLOW HEAT EXCHANGER OF THE PLATE TYPE, COMPRISING, IN COMBINATION, A HOUSING; OPENINGS IN THE HOUHING FOR INFLOW AND OUTFLOW OF FLUIDES BETWEEN WHICH HEAT IS TO BE EXCHANGED; A HEAT EXCHANGER PLATE FORMED IN A PLURALITY OF CONVOLUTIONS ARRANGED IN JUXTAPOSED SPACED-APART RELATIONSHIP, AND HAVING A CORRUGATED SURFACE, THE CORRUGATIONS OF SAID SURFACE BEING SMALL RELATIVE TO THE CONVOLUTIONS OF THE PLATE AND BEING DISPOSED ACROSS SAID CONVOLUTIONS, THE HEAT EXCHANGER PLATE BEING DISPOSED IN THE HOUSING SUCH THAT THE ENDS OF THE CONVOLUTIONS DEFINE SEPARATE FLOW PATHS FOR THE FLUIDS BETWEEN WHICH HEAT IS TO BE EXCHANGED; AND A PLURALITY OF SEPARATORS DISPOSED BETWEEN THE CONVOLUTIONS OF THE HEAT EXCHANGER PLATE, AND HOLDING THE CONVOLUTIONS IN SUCH SPACED-APART RELATIONSHIP, THE SEPARATORS, CONVOLUTIONS AND CORRUGATIONS TOGETHER BEING SHAPED TO DEFINE A PLURALITY OF PASSAGES WHICH ARE INTERCONNECTED AT A PLURALITY OF POINTS ALONG THEIR LENGTH.
References Cited (Backward Citations)
US574157A
Cited
US799621A
Cited
US2288061A
Cited
US2462421A
Cited
US2953110A
Cited
US2858112A
Cited
US3256930A
Cited
US3165152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |