US3618913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionating columns
Assignee: STAHL APPARATE und GERATEBAU G
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Filing: 1969-05-16
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Granted: 1971-11-09
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Expires: 1989-05-16
Abstract
Abstract An intermediate plate of a fractionating column includes shutters vertically movable in support members, which latter are vertically movable in the bottom apertures of the plate. The support members have openings therein for the passage of the lighter medium.
Inventors
- 👤 Arno Schramm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:32
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/163
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
161 words
Intermediate tray for a material exchange column through which a heavier medium and a lighter medium are passed in separate directions said tray having a bottom plate with at least one bottom opening therein, which comprises a shutter member covering said bottom aperture; a holding device in which said shutter member is disposed and has limited vertical movement; upper and lower stop means on said holding device which stop means determine the extent of upward and downward movement of said shutter member with respect to said holding device for passing larger or smaller currents of such lighter medium upwardly through said aperture; a plurality of guide pieces in said bottom aperture in which said holding device is guided and has limited vertical movement; saId guide pieces including upper and lower stop members limiting vertical movements of said holding device with respect to said aperture; and openings in said holding device accommodating outward transit of such lighter medium from said holding device.
Claim 2
Dependent Claim
161 words
Intermediate tray for a material exchange column through which a heavier medium and a lighter medium are passed in separate directions said tray having a bottom plate with at least one bottom opening therein, which comprises a shutter member covering said bottom aperture; a holding device in which said shutter member is disposed and has limited vertical movement; upper and lower stop means on said holding device which stop means determine the extent of upward and downward movement of said shutter member with respect to said holding device for passing larger or smaller currents of such lighter medium upwardly through said aperture; a plurality of guide pieces in said bottom aperture in which said holding device is guided and has limited vertical movement; saId guide pieces including upper and lower stop members limiting vertical movements of said holding device with respect to said aperture; and openings in said holding device accommodating outward transit of such lighter medium from said holding device.
Claim 3
Dependent Claim
21 words
Intermediate tray as defined in claim 1, in which the shutter member is smaller than the bottom aperture covered by it.
Claim 4
Dependent Claim
51 words
Intermediate tray as defined in claim 1, in which said shutter members has a hydrodynamic, that is, dome-shaped form, while the hollow side faces the approach flow direction of such lighter medium or is arranged remote to it or has a concave-convex form, while its center protrudes into said bottom aperture.
Claim 5
Dependent Claim
80 words
Intermediate tray as defined in claim 1, in which the holding device consists of a body substantially similar to the form of and which protrudes beyond the bottom aperture and which has current-guiding extensions such as scallops, lips, and the like, the guide pieces being molded with the limiting pieces on the end stop and the limiting pieces for limiting the bottom position being secured or molded on the body or being extensions secured or molded on the guide pieces.
Claim 6
Dependent Claim
34 words
Intermediate tray as defined in claim 1 in which the limiting pieces and/or guide pieces are connected together by means of a ring to which they are fixed or on which they are molded.
Claim 7
Dependent Claim
22 words
Intermediate tray as defined in claim 1, in which said shutter members are guided by a central guide pin provided with stops.
Claim 8
Dependent Claim
31 words
Intermediate tray as defined in claim 1, in which said shutter members and/or holding devices have different weights and in which all parts are produced by molding from metal and/or plastic.
Claim 9
Dependent Claim
54 words
Intermediate tray as defined in claim 1, in which the holding device has more than two guide pieces, and in which openings formed between the guide pieces are provided with extensions which are arranged parallel to the direction of flow of such lighter medium passing through said openings on its inlet or outlet side.
Claim 10
Dependent Claim
36 words
Intermediate tray as defined in claim 8, in which tongues are cut out which are bent into a form perpendicular to the flow cross section and parallel to the direction of flow of such lighter medium.
Claim 11
Dependent Claim
33 words
Intermediate tray as defined in claim 8, in which the wall in which the openings are provided is folded, and in which the openings are arranged either in the bottom or top fold.
Claim 12
Dependent Claim
14 words
Intermediate tray as defined in claim 8 in which said extensions have different lengths.
Claim 13
Dependent Claim
21 words
Intermediate tray as defined in claim 8, in which said extensions are sleeves inserted into the openings and cut off obliquely.
Claim 14
Dependent Claim
48 words
Intermediate tray as defined in claim 8, in which certain extensions which are underneath the shutter member face to the inside, that is, the bottom aperture traversed by such lighter medium, and in which certain other extensions face the outside, that is, are arranged in the opposite direction.
Claim 15
Dependent Claim
24 words
Intermediate tray as defined in claim 8 in which said extensions form an angle with the main direction of flow of such lighter medium.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |