Patent US4275018A successfully refreshed from Google Patents.
US4275018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid for carrying randomly dumped packing in a mass transfer column
Assignee: Raschig GmbH
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Filing: 1980-02-19
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Granted: 1981-06-23
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Expires: 2000-02-19
Abstract
Abstract A grid-shaped grate for carrying randomly poured particles or filler bodies in mass transfer columns. Each grate comprises of a plurality of grid walls defining openings for receiving the particles or filler bodies, the openings being smaller in size than the particles or filler bodies. The grate is provided at each intersection of the grid walls with spacers which are equally spaced one from another at a distance which is approximately equal to the width of each grid opening. The height of each spacer is approximately equal in size to at least one half of a particle or filler body size, so as to prevent the particles or filler bodies from closing the grid openings.
Inventors
- 👤 Roland Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:53
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/008; B01J15/00; B01J15/005; B01J16/00; B01J16/005; B01J19/00; B01J19/30; B01J19/305; B01J19/32; B01J2208/00; B01J2208/00796; B01J2208/00884; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32286
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
178 words
In a mass transfer column for carrying randomly dumped packing comprising a grate, which said grate includes a plurality of grid walls defining equally-sized openings, the improvement comprising irregularly poured filler bodies, carried by the grate, having predetermined height and width dimensions equal to each other, the grate having openings smaller in size than the filler bodies received therein, and spacing members disposed at each intersection of the grid walls, for supporting the filler bodies, said spacing members being equally-spaced one from another and at a distance approximately equal to the width of each of said openings, said spacing members having a predetermined height which corresponds to at least one-half the height of a filler body, so as to prevent the filler bodies from covering and closing said openings, and said spacing members comprise cylindrical sleeves having open and closed ends, each of said cylindrical sleeves being provided with elongated vertical slots at the open end thereof for slipping said sleeves on said grid walls at the intersections thereof, said sleeves covering the central areas of the intersections.
Claim 2
Dependent Claim
178 words
In a mass transfer column for carrying randomly dumped packing comprising a grate, which said grate includes a plurality of grid walls defining equally-sized openings, the improvement comprising irregularly poured filler bodies, carried by the grate, having predetermined height and width dimensions equal to each other, the grate having openings smaller in size than the filler bodies received therein, and spacing members disposed at each intersection of the grid walls, for supporting the filler bodies, said spacing members being equally-spaced one from another and at a distance approximately equal to the width of each of said openings, said spacing members having a predetermined height which corresponds to at least one-half the height of a filler body, so as to prevent the filler bodies from covering and closing said openings, and said spacing members comprise cylindrical sleeves having open and closed ends, each of said cylindrical sleeves being provided with elongated vertical slots at the open end thereof for slipping said sleeves on said grid walls at the intersections thereof, said sleeves covering the central areas of the intersections.
Claim 3
Dependent Claim
71 words
The improvement according to claim 1, in which sections of the grid walls at the intersections thereof are provided with elongated vertical slots, and said spacing members comprise cylindrical sleeves having open and closed ends, said open ends of said sleeves being slipped onto the grid walls at the intersections thereof by means of said slots, so that said sleeves cover the central areas of the intersections of the grid walls.
Claim 4
Dependent Claim
42 words
The improvement according to claim 2, in which the grid openings are square-shaped and said sections are provided each with a rectangular slot, said rectangular slots defining together cruciform or cross-shaped cut-out members at the intersections which are covered by said sleeves.
Claim 5
Dependent Claim
48 words
The improvement according to claim 1, in which the grid openings are square-shaped and said sleeves are provided each with four rectangular slots at the open end thereof for slipping said sleeves onto the grid walls and defining thereby cruciform or cross-shaped cut-out members covered by said sleeves.
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) | 1984-06-22 | 1984-12-22 | 1985-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-22 | 1988-12-22 | 1989-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-22 | 1992-12-22 | 1993-06-23 | $7700.00 | Window Closed / Lapsed |