Patent US136416A successfully refreshed from Google Patents.
Patent US3146609A successfully refreshed from Google Patents.
US3146609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water distribution system
Assignee: Baltimore Aircoil Co Inc
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Filing: 1964-04-27
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Granted: 1964-09-01
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Expires: 1984-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jr John Engalitcheff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:00
CPC Classifications
F; F28; F28D; F28D5/00; F28D5/02; F28F; F28F25/00; F28F25/02; F28F25/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
IN AN EVAPORATIVE HEAT EXCHANGER INCLUDING A HEAT EXCHANGE REGION AND MEANS TO PASS AIR UPWARDLY THROUGH SAID REGION, THE IMPROVEMENT THAT COMPRISES A PLURALITY OF GENERALLY U SECTION TROUGHS ARRANGED IN SPACED RELATION ABOVE SAID REGION, EACH TROUGH HAVING V NOTCHES IN A SIDE WALL, A DISTRIBUTION BOX HAVING ORIFICES THEREIN EACH COMMUNICATING WITH A TROUGH AT ONE END ONLY OF SAID TROUGH, MEANS TO MAINTAIN A PREDETERMINED HEAD OF WATER IN SAID BOX, AND MEANS WITHIN EACH TROUGH TO MAINTAIN A CONSTANT LEVEL OF WATER THROUGHOUT ITS LENGTH WHEREBY THE FLOW FROM ALL THE NOTCHES WILL BE SUBSTANTIALLY EQUAL.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |