Patent US3137193A successfully refreshed from Google Patents.
US4156705A
Expired / Lapsed
US
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Inclined screen tray tower
Assignee: JFE Engineering Corp
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Filing: 1978-06-20
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Granted: 1979-05-29
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Expires: 1998-06-20
Abstract
Abstract An inclined screen tray tower having one or more inclined screen trays, in which a liquid is passed downwardly onto said screen tray to form a film of said liquid on each of said screens and gas is passed through said liquid films so as to be absorbed by said liquid, characterized in that a plurality of cylinders are arranged side by side on each of said tray screens in such a manner that the longitudinal axis of each of said cylinders extends in the direction of inclination of each of said tray screens, each of said cylinders being made of a netting with metallic or synthetic resinous wires each arranged to make an angle of about 45 DEG with the longitudinal axis of said cylinders.
Inventors
- 👤 Nobuyoshi Ogawa
- 👤 Atsushi Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:46
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/18; B01D3/00; B01D3/14; B01D3/16; B01D3/24; B01J; B01J19/00; B01J19/32; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32279; B01J2219/324; B01J2219/32408; B01J2219/32483; B01J2219/326; Y; Y10; Y10S; Y10S261/00; Y10S261/09; Y10S261/72
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
An inclined screen tray tower having one or more inclined screen trays, in which a liquid is passed downwardly onto said screen tray to form a film of said liquid on each of said screens and gas is passed through said liquid films so as to be absorbed by said liquid, characterized in that a plurality of cylinders are arranged side by side on each of said tray screens in such a manner that the longitudinal axis of each of said cylinders extends in the direction of inclination of each of said tray screens, each of said cylinders being made of a netting with metallic or synthetic resinous wires each arranged to make an angle of about 45° with the longitudinal axis of said cylinders.
Claim 2
Dependent Claim
125 words
An inclined screen tray tower having one or more inclined screen trays, in which a liquid is passed downwardly onto said screen tray to form a film of said liquid on each of said screens and gas is passed through said liquid films so as to be absorbed by said liquid, characterized in that a plurality of cylinders are arranged side by side on each of said tray screens in such a manner that the longitudinal axis of each of said cylinders extends in the direction of inclination of each of said tray screens, each of said cylinders being made of a netting with metallic or synthetic resinous wires each arranged to make an angle of about 45° with the longitudinal axis of said cylinders.
Claim 3
Dependent Claim
46 words
An inclined screen tray tower according to claim 1, wherein the angle of inclination of said screen tray is in the range between 5° and 20°, and wherein each said screen is a screen of 5 to 20 meshes according to the Tyler standard screen scale.
Claim 4
Dependent Claim
46 words
An inclined screen tray tower according to claim 2, wherein each said cylinder is made of a screen having a wire pitch in the range between 5 and 15 mm, and wherein each said cylinder has a diameter in the range between 30 and 70 mm.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |