US3171867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling tower improvement
Assignee: J F Pritchard & Co Of Cal
•
Filing: 1962-11-01
•
Granted: 1965-03-02
•
Expires: 1982-11-01
Abstract
No abstract record available.
Inventors
- 👤 Paul A Frohwerk
- 👤 Eugene L Bass
- 👤 Leonard D Hamlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:15
CPC Classifications
F; F28; F28C; F28C1/00; F28C1/04; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A CROSS FLOW COOLING TOWER COMPRISING A TOWER HOUSING, A SERIES OF VERTICALLY SPACED HORIZONTALLY EXTENDING DECKS POSITIONED IN ONE OPEN SIDE OF THE TOWER HOUSING. MEANS FOR PASSING WATER TO BE COOLED DOWNWARDLY THROUGH SAID VERTICALLY SPACED DECKS, A FAN ASSOCIATED WITH SAID TOWER HOUSING FOR PRODUCING A FLOW OF AIR IN A HORIZONTAL DIRECTION THROUGH SAID ONE OPEN SIDE OF SAID TOWER HOUSING AND BETWEEN SAID DECKS THEREIN WHEREBY TO COOL SAID DOWNWARDLY PASSING WATER, SAID FAN HORIZONTALLY ORIENTED WITH RESPECT TO SAID TOWER HOUSING AND HAVING A CIRCUMFERENTIAL FAN HOUSING THEREAROUND, SAID FAN HOUSING AND
Claim 2
Dependent Claim
98 words
A CROSS FLOW COOLING TOWER COMPRISING A TOWER HOUSING, A SERIES OF VERTICALLY SPACED HORIZONTALLY EXTENDING DECKS POSITIONED IN ONE OPEN SIDE OF THE TOWER HOUSING. MEANS FOR PASSING WATER TO BE COOLED DOWNWARDLY THROUGH SAID VERTICALLY SPACED DECKS, A FAN ASSOCIATED WITH SAID TOWER HOUSING FOR PRODUCING A FLOW OF AIR IN A HORIZONTAL DIRECTION THROUGH SAID ONE OPEN SIDE OF SAID TOWER HOUSING AND BETWEEN SAID DECKS THEREIN WHEREBY TO COOL SAID DOWNWARDLY PASSING WATER, SAID FAN HORIZONTALLY ORIENTED WITH RESPECT TO SAID TOWER HOUSING AND HAVING A CIRCUMFERENTIAL FAN HOUSING THEREAROUND, SAID FAN HOUSING AND
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DE531366C
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US2497389A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |