US3280906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible plate heat exchanger
Assignee: Rosenblad Corp
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Filing: 1965-07-30
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Granted: 1966-10-25
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Expires: 1985-07-30
Abstract
No abstract record available.
Inventors
- 👤 Curt F Rosenblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:55
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0087; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387; Y10S165/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN HEAT EXCHANGER CONSTRUCTION, A PAIR OF SPACED FLEXIBLE HEAT EXCHANGER PLATES FORMING A CHANNEL FOR THE PASSAGE OF HEAT EXCHANGE MEDIUM THEREBETWEEN, AND REMOVABLE SPACER MEANS MOUNTED IN SAID CHANNEL FOR LIMITING THE FLEXING OF SAID PLATES TOWARD EACH OTHER, SAID SPACER MEANS COMPRISING A PLURALITY OF SPACED GENERALLY PARALLEL RODS EACH EXTENDING THROUGH A SUBSTANTIAL PART OF THE LENGTH OF THE CHANNEL GENERALLY PARALLEL TO THE BROAD EXTENTS OF THE PLATES, AND MEANS RETAINING SAID RODS IN POSITION BETWEEN SAID PLATES, THE RODS HAVING A DIMENSION NORMAL TO THE PLATES WHICH IS SOMEWHAT LESS THAN THE DISTANCE BETWEEN THE PLATES IN THEIR RELAXED CONDITION.
Claim 2
Dependent Claim
106 words
IN HEAT EXCHANGER CONSTRUCTION, A PAIR OF SPACED FLEXIBLE HEAT EXCHANGER PLATES FORMING A CHANNEL FOR THE PASSAGE OF HEAT EXCHANGE MEDIUM THEREBETWEEN, AND REMOVABLE SPACER MEANS MOUNTED IN SAID CHANNEL FOR LIMITING THE FLEXING OF SAID PLATES TOWARD EACH OTHER, SAID SPACER MEANS COMPRISING A PLURALITY OF SPACED GENERALLY PARALLEL RODS EACH EXTENDING THROUGH A SUBSTANTIAL PART OF THE LENGTH OF THE CHANNEL GENERALLY PARALLEL TO THE BROAD EXTENTS OF THE PLATES, AND MEANS RETAINING SAID RODS IN POSITION BETWEEN SAID PLATES, THE RODS HAVING A DIMENSION NORMAL TO THE PLATES WHICH IS SOMEWHAT LESS THAN THE DISTANCE BETWEEN THE PLATES IN THEIR RELAXED CONDITION.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |