US3225823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Individual
•
Filing: 1962-01-22
•
Granted: 1965-12-28
•
Expires: 1982-01-22
Abstract
No abstract record available.
Inventors
- 👤 Frohlich Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:35
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0062; F28D9/0068; F28F; F28F21/00; F28F21/006; F28F2250/00; F28F2250/10; F28F2250/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A HEAT EXCHANGER, COMPRISING HOUSING MEANS INCLUDING AT LEAST ONE VERTICAL WALL DEFINING A CHAMBER; A STACK OF SEPARABLE, PARALLEL BRITTLE HEAT EXCHANGE PLATES MUTUALLY SPACED BY SAPCING STRIPS; MEANS SUPPORTING SAID STACK IN SAID HOUSING UPON THE EDGES OF SAID PLATES, SAID PLATES BEING PARALLEL WITH AND SPACED FROM SAID VERTICAL WALL, SAID SUPPORTING MEANS INCLUDING A RIGID METAL TENSION PLATE SPACED FROM SAID VERTICAL WALL AND CONTINUOUSLY ENGAGING ONE END OF SAID STACK, AND MEANS SUPPORTING THE OTHER END OF SAID STACK; RESILIENT MEANS BIASING SAID TENSION PLATE SOLELY IN A FIST DIRECTION TO APPLY A LONGITUDINAL COMPRESSIVE FORCE UPON SAID STACK OF PLATES, SAID RESILIENT MEANS COMPRISING A LAYER OF AN ELASTIC, COMPRESSIBLE MATERIAL INTERMEDIATE AND CONTIGUOUS WITH SAID HOUSING WALL AND SAID TENSION PLATE; AND SCREW CONNECTED BETWEEN SAID HOUSING AND SAID TENSION PLATE AND EXTENDING THROUGH SAID ELASTIC LAYER FOR DISPLACING SAID TENSION PLATE IN THE OPPOSITE DIRECTION TO REDUCE THE COMPRESSIVE FORCE APPLIED TO THE STACK BY SAID RESILIENT MEANS.
Claim 2
Dependent Claim
166 words
A HEAT EXCHANGER, COMPRISING HOUSING MEANS INCLUDING AT LEAST ONE VERTICAL WALL DEFINING A CHAMBER; A STACK OF SEPARABLE, PARALLEL BRITTLE HEAT EXCHANGE PLATES MUTUALLY SPACED BY SAPCING STRIPS; MEANS SUPPORTING SAID STACK IN SAID HOUSING UPON THE EDGES OF SAID PLATES, SAID PLATES BEING PARALLEL WITH AND SPACED FROM SAID VERTICAL WALL, SAID SUPPORTING MEANS INCLUDING A RIGID METAL TENSION PLATE SPACED FROM SAID VERTICAL WALL AND CONTINUOUSLY ENGAGING ONE END OF SAID STACK, AND MEANS SUPPORTING THE OTHER END OF SAID STACK; RESILIENT MEANS BIASING SAID TENSION PLATE SOLELY IN A FIST DIRECTION TO APPLY A LONGITUDINAL COMPRESSIVE FORCE UPON SAID STACK OF PLATES, SAID RESILIENT MEANS COMPRISING A LAYER OF AN ELASTIC, COMPRESSIBLE MATERIAL INTERMEDIATE AND CONTIGUOUS WITH SAID HOUSING WALL AND SAID TENSION PLATE; AND SCREW CONNECTED BETWEEN SAID HOUSING AND SAID TENSION PLATE AND EXTENDING THROUGH SAID ELASTIC LAYER FOR DISPLACING SAID TENSION PLATE IN THE OPPOSITE DIRECTION TO REDUCE THE COMPRESSIVE FORCE APPLIED TO THE STACK BY SAID RESILIENT MEANS.
References Cited (Backward Citations)
US2428880A
Cited
US2927781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |