US3683593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas scrubber having tiltable grids and method of using
Assignee: National Dust Collector Corp
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Filing: 1970-04-23
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Granted: 1972-08-15
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Expires: 1990-04-23
Abstract
Abstract A gas scrubber comprising a housing having an inlet for contaminated gas adjacent the lower end and an outlet for cleansed gas adjacent the upper end. A filter bed extends across the housing intermediate the inlet and the outlet and the filter bed includes a supporting grid structure and a plurality of separate, movable, filter elements stacked several layers deep on the grid. Adjustable support means is provided for tilting the grid structure in the housing relative to the horizontal and control means is included for automatically adjusting said support means to change the angle of tilt, thereby effecting lateral displacement of said filter elements around said filter bed to provide self-cleaning of said elements.
Inventors
- 👤 Roger E Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:18
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/028
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
46 words
The gas scrubber of claim 1 wherein said adjustable support means includes at least a pair of vertically adjustable support members mounted at spaced locations on said housing, said control means including means for changing the vertical length of one support member relative to the other.
Claim 2
Dependent Claim
34 words
The gas scrubber of claim 1 wherein said adjustable support means comprises at least one fluid cylinder having one end pivotally supported from said housing and an opposite end pivotally supporting said filter bed.
Claim 3
Dependent Claim
31 words
The gas scrubber of claim 3 wherein said control means includes means for supplying pressurized fluid to said fluid for adjustable time intervals for expanding and contracting the effective length thereof.
Claim 4
Dependent Claim
39 words
The gas scrubber of claim 4 wherein said control means includes timer means for controlling the supply of compressed fluid to expand said one fluid cylinder for a first period and to contract said cylinder for a second period.
Claim 5
Dependent Claim
32 words
The gas scrubber of claim 5 wherein said timer means is selectively adjustable to change the length of said periods and to set an adjustable third between said first and second periods.
Claim 6
Dependent Claim
122 words
A gas scrubber of the character described comprising a housing including an inlet for contaminated gas adjacent a lower end portion and an outlet for cleansed gas adjacent an upper end portion, a filter bed across said housing at a level intermediate said inlet and outlet including a support grid for holding a plurality of individually discrete, separate, filter elements relatively movable on and arranged in at least one layer on said grid, a plurality of adjustable support members for supporting said grid from said housing, and control means for repetitively changing the length of one of said support members relative to the other for changing the tilt of said grid for moving displacement of said filter elements around said filter bed.
Claim 7
Dependent Claim
73 words
The gas scrubber of claim 7 wherein said support members are adjustable between an expanded and a contracted condition, and said control means comprising means for initiating the adjustment of said support members in an operating cycle comprising expanding said members from a contracted condition to an expanded condition, maintaining said expanded condition for a selectively adjustable first period and returning said members to said contracted condition for a selectively adjustable second period.
Claim 8
Dependent Claim
41 words
The gas scrubber of claim 8 wherein said timer means includes means for initiating the adjustment of each of said support members on said operating cycles and means for sequencing the cycles of each support member in relation to the others.
Claim 9
Dependent Claim
26 words
The gas scrubber of claim 9 wherein said timer means includes means for providing a selectively adjustable dwell period between operative cycles of different support members.
Claim 10
Dependent Claim
39 words
The gas scrubber of claim 10 wherein said timer means includes means for continuously adjusting at least one of said support members whereby at least some of said filter elements are in continuous lateral movement around said filter bed.
Claim 11
Independent Claim
92 words
A method of scrubbing gas to remove contaminants therefrom comprising the steps of wetting said gas by direct contact against the wetted surfaces of a plurality of individually discrete, separate, filter elements disposed for random displacement generally transversely of the general direction of flow of said gas, and repetitively moving said elements against and away from one another and generally laterally of said general direction of gas flow to provide fresh wetted surfaces for contact with said gas and to dislodge any materials tending to collect on the surfaces of said elements.
Claim 12
Dependent Claim
26 words
The method of claim 12 wherein said moving step comprises changing the angular relation of said elements in respect to said general direction of gas flow.
Claim 13
Dependent Claim
26 words
The method of claim 12 wherein said filter elements are moved in a ciRcular direction around an axis parallel of said general direction of gas flow.
Claim 14
Dependent Claim
16 words
The method of claim 14 wherein said elements are spherical and roll during said lateral movement.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |