US3109720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic precipitation
Assignee: Beazer East Inc
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Filing: 1960-05-17
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Granted: 1963-11-05
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Expires: 1980-05-17
Abstract
No abstract record available.
Inventors
- 👤 Harry B Cummings
- 👤 John W Drenning
- 👤 John L Mckewen
- 👤 Gordon L Morgret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:52
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; B03C3/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
THE METHOD OF REMOVING PARTICLES FROM A FLUID STREAM COMPRISING SUBJECTING THE FLUID STREAM TO AN ELECTRIC CHARGE OF ONE POLARITY SO AS TO CHARGE SAID PARTICLES, CONCENTRATING SAID PARTICLES IN A ZONE CONTIGUOUS TO A MEMBER HAVING A CHARGE OF OPPOSITE POLARITY, SUBJECTING SAID MEMBER TO VIBRATIONS HAVING A FREQUENCY OF AT LEAST 3,000 CYCLES PER SECOND AND IMPARTINGS TO SAID PARTICLES IN SAID PARTICLE-CONCENTRATED ZONE AN ACCELERATION OF ABOVE 50 G.
Claim 2
Independent Claim
73 words
THE METHOD OF REMOVING PARTICLES FROM A FLUID STREAM COMPRISING SUBJECTING THE FLUID STREAM TO AN ELECTRIC CHARGE OF ONE POLARITY SO AS TO CHARGE SAID PARTICLES, CONCENTRATING SAID PARTICLES IN A ZONE CONTIGUOUS TO A MEMBER HAVING A CHARGE OF OPPOSITE POLARITY, SUBJECTING SAID MEMBER TO VIBRATIONS HAVING A FREQUENCY OF AT LEAST 3,000 CYCLES PER SECOND AND IMPARTINGS TO SAID PARTICLES IN SAID PARTICLE-CONCENTRATED ZONE AN ACCELERATION OF ABOVE 50 G.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |