US3290025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trough system for evaporative heat exchangers
Assignee: Baltimore Aircoil Co Inc
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Filing: 1965-11-19
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Granted: 1966-12-06
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Expires: 1985-11-19
Abstract
No abstract record available.
Inventors
- 👤 Jr John Engalitcheff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:28
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/008; F; F28; F28C; F28C1/00; F28C1/02; F28C1/04; F28D; F28D5/00; F28D5/02; F28F; F28F25/00; F28F25/02; F28F25/04; Y; Y02; Y02B; Y02B30/00; Y02B30/70; Y10; Y10S; Y10S261/00; Y10S261/11; Y10S261/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A TROUGH FOR SUPPLYING WATER TO AN EVAPORATIVE HEAT EXCHANGER COMPRISING AN INTEGRAL SHEET METAL STRUCTURE HAVING PARALLEL SIDE WALLS MUTUALLY SPACED AND INTERCONNECTED BY A REGULARLY CURVED PORTION EXTENDING FOR 180*, SAID SIDE WALLS PRESENTING TWO FREE EDGES, SAID SIDE WALLS EACH DEFINING REGULARLY SPACED DEEP V NOTCHES THEREIN, THE MOUTHS OF SAID NOTCHES COINCIDING WITH THE FREE EDGES OF THE SIDE WALLS THE DEPTH OF THE SIDE WALL BETWEEN THE BEGINNING OF THE CURVED PORTION AND THE BOTTOM OF THE NOTCHES BEING ABOUT EQUAL TO THE SPACE BETWEEN THE SIDE WALLS.
Claim 2
Dependent Claim
93 words
A TROUGH FOR SUPPLYING WATER TO AN EVAPORATIVE HEAT EXCHANGER COMPRISING AN INTEGRAL SHEET METAL STRUCTURE HAVING PARALLEL SIDE WALLS MUTUALLY SPACED AND INTERCONNECTED BY A REGULARLY CURVED PORTION EXTENDING FOR 180*, SAID SIDE WALLS PRESENTING TWO FREE EDGES, SAID SIDE WALLS EACH DEFINING REGULARLY SPACED DEEP V NOTCHES THEREIN, THE MOUTHS OF SAID NOTCHES COINCIDING WITH THE FREE EDGES OF THE SIDE WALLS THE DEPTH OF THE SIDE WALL BETWEEN THE BEGINNING OF THE CURVED PORTION AND THE BOTTOM OF THE NOTCHES BEING ABOUT EQUAL TO THE SPACE BETWEEN THE SIDE WALLS.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |