US3073094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic filter panel
Assignee: Trion Inc
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Filing: 1960-05-23
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Granted: 1963-01-15
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Expires: 1980-05-23
Abstract
No abstract record available.
Inventors
- 👤 George F Landgraf
- 👤 Edgar R Fry
- 👤 William R Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:39
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/14; B03C3/155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN ELECTROSTATIC FILTER COMPRISING A PAD OF FILAMENTS HAVING HIGH RESISTANCE, MEANS TO SUBJECT SAID PAD TO AN ELECTROSTATIC FIELD, A PLURALITY OF IONIZING WIRES ADJACENT TO SAID PAD, A GROUND ELECTRODE COMPLETELY SURROUNDING EACH WIRE SUCH THAT AN IONIZING CHAMBER IS PRESENT AROUND EACH WIRE, SAID ELECTRODE BEING PERFORATED TO ADMIT A FLOW OF AIR HAVING SUSPENDED PARTICLES, SAID FLOW OF AIR BEING SUBSTANTIALLY PERPENDICULAR TO SAID WIRES AND BEING DIRECTED INTO ONE OF SAID CHAMBERS AND THROUGH SAID PAD, AND MEANS TO SUPPLY A HIGH VOLTAGE TO THE IONIZING WIRE, SAID PARTICLES BEING CHARGED BY THE IONIZING WIRE IN THE
Claim 2
Dependent Claim
102 words
AN ELECTROSTATIC FILTER COMPRISING A PAD OF FILAMENTS HAVING HIGH RESISTANCE, MEANS TO SUBJECT SAID PAD TO AN ELECTROSTATIC FIELD, A PLURALITY OF IONIZING WIRES ADJACENT TO SAID PAD, A GROUND ELECTRODE COMPLETELY SURROUNDING EACH WIRE SUCH THAT AN IONIZING CHAMBER IS PRESENT AROUND EACH WIRE, SAID ELECTRODE BEING PERFORATED TO ADMIT A FLOW OF AIR HAVING SUSPENDED PARTICLES, SAID FLOW OF AIR BEING SUBSTANTIALLY PERPENDICULAR TO SAID WIRES AND BEING DIRECTED INTO ONE OF SAID CHAMBERS AND THROUGH SAID PAD, AND MEANS TO SUPPLY A HIGH VOLTAGE TO THE IONIZING WIRE, SAID PARTICLES BEING CHARGED BY THE IONIZING WIRE IN THE
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |