US3375855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam boiler blowdown valve
Assignee: DOUGLAS B DEEKS
•
Filing: 1965-09-13
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Granted: 1968-04-02
•
Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Douglas B Deeks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:43
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/48; F22B37/54; F22B37/545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A DEVICE FOR CONTINUOUS BOILER BLOWDOWN AND LIKE USES, COMPRISING AN INLET HEADER, AN OUTLET HEADER, A PLURALITY OF HOUSINGS BETWEEN SAID INLET HEADER AND SAID OUTLET HEADER, EACH OF SAID HOUSINGS HAVING A CHAMBER WITH AN INLET AND AN OUTLET, SAID CHAMBER OF EACH OF SAID HOUSINGS DEFINING A TORTUOUS WATER PASSAGE BETWEEN THE SAID INLET AND OUTLET OF SAID CHAMBER, SAID TORTUOUS WATER PASSAGE IN EACH OF SAID HOUSINGS INCLUDING A PLURALITY OF INTERCONNECTED CYCLONIC CHAMBERS, MEANS FOR MAINTAINING SAID HOUSINGS IN SERIAL ARRANGEMENT WITH THE INLET OF THE CHAMBER OF THE FIRST HOUSING COMMUNICATING WITH SAID INLET HEADER, THE OUTLET OF THE CHAMBER OF THE LAST HOUSING COMMUNICATING WITH SAID OUTLET HEADER AND THE OUTLET OF THE CHAMBER OF HOUSINGS PRECEDING THE LAST HOUSING COM-
Claim 2
Independent Claim
128 words
A DEVICE FOR CONTINUOUS BOILER BLOWDOWN AND LIKE USES, COMPRISING AN INLET HEADER, AN OUTLET HEADER, A PLURALITY OF HOUSINGS BETWEEN SAID INLET HEADER AND SAID OUTLET HEADER, EACH OF SAID HOUSINGS HAVING A CHAMBER WITH AN INLET AND AN OUTLET, SAID CHAMBER OF EACH OF SAID HOUSINGS DEFINING A TORTUOUS WATER PASSAGE BETWEEN THE SAID INLET AND OUTLET OF SAID CHAMBER, SAID TORTUOUS WATER PASSAGE IN EACH OF SAID HOUSINGS INCLUDING A PLURALITY OF INTERCONNECTED CYCLONIC CHAMBERS, MEANS FOR MAINTAINING SAID HOUSINGS IN SERIAL ARRANGEMENT WITH THE INLET OF THE CHAMBER OF THE FIRST HOUSING COMMUNICATING WITH SAID INLET HEADER, THE OUTLET OF THE CHAMBER OF THE LAST HOUSING COMMUNICATING WITH SAID OUTLET HEADER AND THE OUTLET OF THE CHAMBER OF HOUSINGS PRECEDING THE LAST HOUSING COM-
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) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |