US2708486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas cleaning apparatus
Assignee: Research Corp
•
Filing: 1952-04-30
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Granted: 1955-05-17
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Expires: 1972-04-30
Abstract
No abstract record available.
Inventors
- 👤 Carl W J Hedberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:29
CPC Classifications
B; B04; B04C; B04C9/00; B04C5/00; B04C5/24; B04C5/28; B04C2009/001; B04C2009/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN COMBINATION WITH AN ELECTRICAL PRECIPITATOR HAVING A GAS FLUE EXTENDING HORIZONTALLY FROM THE PRECIPITATOR SHELL, A MATERIAL-RECEIVING HOPPER OPENING INTO THE LOWER PORTION OF THE FLUE, PARTITION MEMBERS EXTENDING LATERALLY ACROSS THE FLUE AND COOPERATING TO DEFINE A FIRST GAS INLET CHAMBER OPEN TO THE FLUE IN THE UPSTREAM DIRECTION AND CLOSED THEREFROM IN THE DOWNSTREAM DIRECTION, A FIRST GAS OUTLET CHAMBER ABOVE THE FIRST GAS INLET CHAMBER OPEN TO THE FLUE IN THE DOWNSTREAM DIRECT AND CLOSED THEREFROM IN THE UPSTREAM DIRECTION, A SECOND GAS INLET CHAMBER ABOVE THE FIRST GAS OUTLET CHAMBER OPEN TO THE FLUE IN THE UPSTREAM DIRECTION AND CLOSED THEREFROM IN THE DOWNSTREAM DIRECTION, AND A SECOND GAS OUTLET CHAMBER ABOVE THE SECOND GAS INLET CHAMBER OPEN TO THE FLUE IN THE DOWNSTREAM DIRECTION AND CLOSED THEREFROM IN THE UPSTREAM DIRECTION, A FIRST SET OF VORTICAL SEPARATOR TUBES EXTENDING BETWEEN THE FIRST GAS INLET CHAMBER AND THE MATERIAL-RECEIVING HOPPER, A GAS OUTLET TUBE CONCENTRICALLY POSITIONED IN EACH OF THE FIRST SET OF SEPARATOR TUBES AND EXTENDING
Claim 2
Dependent Claim
172 words
IN COMBINATION WITH AN ELECTRICAL PRECIPITATOR HAVING A GAS FLUE EXTENDING HORIZONTALLY FROM THE PRECIPITATOR SHELL, A MATERIAL-RECEIVING HOPPER OPENING INTO THE LOWER PORTION OF THE FLUE, PARTITION MEMBERS EXTENDING LATERALLY ACROSS THE FLUE AND COOPERATING TO DEFINE A FIRST GAS INLET CHAMBER OPEN TO THE FLUE IN THE UPSTREAM DIRECTION AND CLOSED THEREFROM IN THE DOWNSTREAM DIRECTION, A FIRST GAS OUTLET CHAMBER ABOVE THE FIRST GAS INLET CHAMBER OPEN TO THE FLUE IN THE DOWNSTREAM DIRECT AND CLOSED THEREFROM IN THE UPSTREAM DIRECTION, A SECOND GAS INLET CHAMBER ABOVE THE FIRST GAS OUTLET CHAMBER OPEN TO THE FLUE IN THE UPSTREAM DIRECTION AND CLOSED THEREFROM IN THE DOWNSTREAM DIRECTION, AND A SECOND GAS OUTLET CHAMBER ABOVE THE SECOND GAS INLET CHAMBER OPEN TO THE FLUE IN THE DOWNSTREAM DIRECTION AND CLOSED THEREFROM IN THE UPSTREAM DIRECTION, A FIRST SET OF VORTICAL SEPARATOR TUBES EXTENDING BETWEEN THE FIRST GAS INLET CHAMBER AND THE MATERIAL-RECEIVING HOPPER, A GAS OUTLET TUBE CONCENTRICALLY POSITIONED IN EACH OF THE FIRST SET OF SEPARATOR TUBES AND EXTENDING
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) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |